OKI ML5720, ML5721, ML5790, ML5791 Technical Reference Guide

ML5720/ML5721/ML5790/ML5791

Technical Reference Guide

REFACE

Every effort has been made to ensure that the information in this document is complete, accurate, and up-to-date. The manufacturer assumes no responsibility for the results of errors beyond its control. The manufacturer also cannot guarantee that changes in software and equipment made by other manufacturers and referred to in this guide will not affect the applicability of the inform a t ion in i t. Mention of software products manufactured by other companies does not necessarily constitute endorsement by the manufacturer.

While all reasonable efforts have been made to make this document as accurate and helpful as possible, we make no warranty of any kind, expressed or implied, as t o the accuracy or completeness of the information contained herein.

The most up-to-date drivers and manuals are available from the web site:

http://www.okiprintingsolutions.com

07118001 Iss.01 Copyright © 2011 Oki Europe Ltd. All rights reserved. Oki is a registered trademark of Oki Electric Industry Company, Ltd. Oki Printing Solutions is a tr a d emark of Oki Data Corporation. Energy Star is a trademark of the United States Environmental Protection Agency. Microsoft, MS-DOS and Windows are registered trademarks of Microsoft Corporation. Apple, Macintosh, Mac and Mac OS are registered trademarks of Apple Inc. Other product names and brand names are registered trademarks or trademarks of their

proprietors.

As an ENERGY STAR Program Participant, the manufacturer has determined that this product meets the ENERGY STAR guidelines for energy efficiency.

This product complies with the requirements of the Council Directives 2004/ 108/EC (EMC), 2006/95/EC (LVD) and 2009/125/EC (ErP) as amended where applicable on the approximation of the laws of the member states relating to electromagnetic compatibility, low voltage and energy related product.

This product complies with EN55022 Class B. However, when fitted with the optional network interface card or optional cut-sheet feeder, compliance to EN55022 is Class A. In a domestic environment this configuration may cause radio interference, in which case the user may be required to take adequate control measures.

The following cables were used to evaluate this product to achieve EMC directive 2004/108/EC compliance and configurations other than this may affect that compliance.

CABLE TYPE LENGTH

(METRE)

Power 1.8 USB 5.0 Serial 2.1 Parallel 2.0

CORE SHIELD

✘✘

✘ ✔

LAN 5.0

✘✘

Preface > 2

ANUFACTURER

Oki Data Corporation, 4-11-22 Shibaura, Minato-ku, Tokyo 108-8551, Japan

MPORTER TO THE

Oki Europe Limited (trading as Oki Printing Solutions) Blays House

Wick Road Egham Surrey, TW20 0HJ United Kingdom

For all sales, support and general enquiries contact your local distributor.

NVIRONMENTAL INFORMATION

EU/

AUTHORISED REPRESENTATIVE

Manufacturer > 3

ONTENTS

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Manufacturer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Importer to the EU/authorised representative. . . . . . . . . . . . . . . . . . . . .3

Environmental Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Notes, cautions and warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Online usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Printing pages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Standard configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Identifying component parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Internal view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Rear view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Interface specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

IEEE1284 parallel interface specifications. . . . . . . . . . . . . . . . . . . . . . . . .15

Connectors and cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Parallel interface signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Parallel interface levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Parallel interface circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Parallel interface timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Support mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Universal Serial Bus (USB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Connectors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

USB interface signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Mode and class of device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Data signalling rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Interface circuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Signal level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Option interface specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

General specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Interface signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Interface timing charts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Receiving margin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Description of communication procedures. . . . . . . . . . . . . . . . . . . . . . .24

Interface control code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Local test function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Operator interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Operator panel functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Print mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Hex Dump mode, Menu mode, Test mode . . . . . . . . . . . . . . . . . . . . . .30

Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Alarm/error indications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Recoverable alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Unrecoverable alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Menu selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Contents > 4

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Menu items. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Self test printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Rolling ASCII self test printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Hexadecimal Dump mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Automatic paper loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Auto-parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Form tear-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Print position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Quiet printing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

High-copy printing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Command descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

ML5720/ML5721 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Horizontal control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

Vertical control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Symbol sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102

Font description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112

Text print features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Graphics mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .157

Composite commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .173

General control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .179

Barcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .194

ML5790/ML5791 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203

Horizontal control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203

Vertical control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .213

Character set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .227

Font description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .241

Text print features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .253

Graphics mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .261

Composite commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .268

General control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .270

Barcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .279

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288

Physical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288

Power requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .288

Electrical insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289

Environmental conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .289

Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

Agency approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

Print specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290

Paper specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293

Ribbon specification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .294

Appendix A – Command summary . . . . . . . . . . . . . . . . . . . . . . . . . . . .295

Appendix B – Print modes/features . . . . . . . . . . . . . . . . . . . . . . . . . . .311

ML5720/ML5721 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311

IBM mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .311

EPSON mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .312

ML mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .313

ML5790/ML5791 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314

IBM mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .314

EPSON mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .315

Contents > 5

Appendix C – Code pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .316

Appendix D – Media specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .340

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .340

Continuous paper (continuous forms) . . . . . . . . . . . . . . . . . . . . . . . . . .342

Cut-sheet paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .352

Envelopes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .356

Cardstock paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358

Label paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .358

Appendix E – Barcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361

Barcode external code list EAN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .361

Barcode external code list EAN13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .362

Barcode external code list UPC - A. . . . . . . . . . . . . . . . . . . . . . . . . . . . .363

Barcode external code list UPC - E. . . . . . . . . . . . . . . . . . . . . . . . . . . . .364

Barcode external code list CODE39 . . . . . . . . . . . . . . . . . . . . . . . . . . . .365

Barcode external code list interleaved 2-of-5 . . . . . . . . . . . . . . . . . . . . .366

Barcode 128 code list code type: A . . . . . . . . . . . . . . . . . . . . . . . . . . . .367

Barcode 128 code list code type: B . . . . . . . . . . . . . . . . . . . . . . . . . . . .368

Barcode 128 code list code type: C . . . . . . . . . . . . . . . . . . . . . . . . . . . .369

Barcode External code list postnet. . . . . . . . . . . . . . . . . . . . . . . . . . . . .370

Appendix F – Printing specifications. . . . . . . . . . . . . . . . . . . . . . . . . . .371

Measurement conditions and specification value definitions . . . . . . . . . . .371

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .371

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .374

Oki Printing Solutions contact details. . . . . . . . . . . . . . . . . . . . . . . . . .375

Contents > 6

OTES, CAUTIONS AND WARNINGS

NOTE A note provides additional information to supplement the main text.

CAUTION!

A caution provides additional information which, if ignored, may result in equipment malfunction or damage.

WARNING!

A warning provides additional information which, if ignored, may result in a risk of personal injury.

For the protection of your product, and in order to ensure that you benefit from its full functionality, this model has been designed to operate only with genuine original ribbon cartridges. Any other ribbon cartridge may not operate at all, even if it is described as “compatible”, and if it does work, your product's performance and print quality may be degraded.

Use of non-genuine products may invalidate your warranty.

Specifications subject to change without notice. All trademarks acknowledged.

Notes, cautions and warnings > 7

BOUT THIS GUIDE

NOTE Images used in this manual may include optional features that your printer does not have installed.

If required, you may wish to refer for basic information to the User’s Guide which is stored on the manuals CD.

This manual is your Technical Reference guide (check the web site, www.okiprintingsolutions.com, for the most up-to-date version) for your printer and forms part of the overall user support listed below:

> Installation Safety booklet: provides information as to safe use of the printer.

This is a paper document that is packaged with the printer and should be read before setting up your printer.

> Set-up guide: to describe how to unpack and set up your printer.

This is a paper document that is packaged with the printer.

> This Technical Reference Guide: to provide detailed technical information for

programmers and more technical users. This is an electronic document available on the support web site.

> User’s Guide: to help you to become familiar with your printer and make the best

use of its many features. Also included are guidelines for troubleshooting and maintenance to ensure that it performs at its best. Additionally, information is provided for adding optional accessories as your printing needs evolve.

This is an electronic document stored on the manuals CD.

> Network Guide: to provide detailed technical information for network

administrators to configure the optional accessory network interface. This is an electronic document stored on the CD that accompanies the network

interface card optional accessory.

> Installation Guides: accompany consumable items and optional accessories to

describe how to install them. These are paper documents that are packaged with the consumables and optional

accessories.

> Online Help: online information accessible from the printer driver and utility

software.

NLINE USAGE

This guide is intended to be read on screen using an Adobe Acrobat Reader. Use the navigation and viewing tools provided in Acrobat.

You can access specific information in two ways:

> In the list of bookmarks down the left hand side of your screen, click on the topic of

interest to jump to the required topic. (If the bookmarks are not available, use the

“Contents” on page 4.)

> In the list of bookmarks, click on Index to jump to the Index. (If the bookmarks are

not available, use the “Contents” on page 4.) Find the term of interest in the alphabetically arranged index and click on the associated page number to jump to the page containing the term.

About this guide > 8

RINTING PAGES

The whole manual, individual pages, or sections may be printed. The procedure is:

1. From the toolbar, select File, then Print (or press the Ctrl + P keys).

2. Choose which pages you wish to print:

(a) All pages, (1), for the entire manual. (b) Current page, (2), for the page at which you are looking.

1 2 3

page numbers.

3. Click OK.

About this guide > 9

NTRODUCTION

This printer series is designed to provide highly reliable letter quality printing and high resolution graphics for the desktop/office printing environment. It combines state-of-theart, 9-pin (ML5720/ML5721) and 24-pin (ML5790/ML5791), serial impact dot matrix printing technology with advanced materials and superior construction to provide high performance and versatility in a desktop sized unit. Careful attention to ergonomics and application needs provides user friendly operation for operators of varying technical capabilities.

EATURES

The features include:

> OKI smart Paper Handling > 9-pin(ML5720/ML5721) and 24-pin(ML5790/ML5791) double arrangement operator

replaceable printhead

> Direct access control panel > Structured direct access menu for easy set up > Printhead life: 400M characters (average) in 10 CPI Utility mode at normal 25%

duty, 35% page density

> Bi-directional short-line-seeking printing > Print speed:

(ML5790/ML5791)

ML5720/ML5721 ML5790/ML5791

600 CPS HSD (all CPIs) 480 CPS HSD (10 CPI) 700 CPS SSD (12 CPI only) 576 CPS HSD (12 CPI) 450 CPS Draft (10/12/15/20 CPI) 360 CPS Draft (10 CPI) 431 CPS Draft (17.1 CPI) 540 CPS Draft (15 CPI) 113 CPS NLQ (10/12/15 CPI) 120 CPS LQ (10 CPI) 108 CPS NLQ (17.1/20 CPI)

> Paper feed

> Top/Rear/Bottom/Front path > Rear/Front Push tractor > Pull tractor > Friction feed with pinch roller release

> Paper handling

> Automatic sheet loading > Short paper tear-off available by menu selection or TEAR button operation > Auto-loading for single sheet and continuous paper > Auto park feature

Introduction > 10

> Paper copies

ML5720/ML5721 ML5790/ML5791

9 - 11 lb, 6 part (with Rear/Front Push feed)

9 – 11 lb, 7 part (with Pull tractor Front/Bottom Pull feed) (See note)

NOTE Depending on the paper route and media type, printout may appear light on the last paper part. It is recommended to use High Copy mode when the print appears light.

> Paper path capability

9 - 11 lb, 6 part (with Rear/Front Push feed) 9 - 11 lb, 7 part (with Pull tractor Front/Bottom feed)

> Stationery cartridge ribbon > Interfaces

> Standard IEEE1284 parallel interface > USB interface > Optional RS-232C serial interface > Optional Network interface card

9 - 11 lb, 6 part (See Note)

> ML5720/ML5721:Quiet operation at 55 dB(A) in quiet mode and 57 dB(A) in normal

mode

> ML5790/ML5791:Quiet Operation at 52 dB(A) in quiet mode and 57 dB(A) in normal

mode.

> 128 kbytes max. receive buffer >

ML5720/ML5721: Line feed resolution at 1/6 inch, 1/8 inch, n/72 inch,

n/144 inch, n/216 simulated by n/288 inch

ML5790/ML5791: Line feed resolution at 1/6 inch, 1/8 inch, n/60 inch,

n/72 inch, n/180 inch, n/216 inch, n/360 inch.

> Agency approved: GS,CE > Barcode data printing > Postnet bar code data printing

Introduction > 11

TANDARD CONFIGURATION

This printer series consists of the following components:

> Printer mechanism > Power supply unit > Control board (including an IEEE1284 parallel interface and USB port) > Operator panel board > Acoustic covers > Tractor feed unit

PTIONS

> RS-232C Serial Interface Board

NOTE Ensure that the RS-232C Serial Interface board’s communication rate is up to

19.2 K BPS. RS-232C with a lower K BPS cannot be used for this printer.

> LAN7120E3 100BASE-TX/10BASE-T Network Board > Tractor unit (Push and Pull) > Cut-sheet feeder (Single-bin only) > Roll paper stand (ML5720/ML5790)

Introduction > 12

DENTIFYING COMPONENT PARTS

The main parts of your printer are identified and briefly explained below.

RONT VIEW

1. Power Switch: to turn the printer power ON/OFF.

2. Operator Panel: contains buttons and indicators (LEDs) (described in detail later)

that allow you to operate the printer.

3. Front Feed Paper Tray: to feed the cut sheet from the fron t .

4. Front Cover: open to fit the front feed paper tray or to fit the tractor.

5. Platen Knob.

6. Paper Type Lever: set according to the type of paper feed - front feed (cut sheet),

continuous rear feed, continuous front feed or continuous bottom pull.

7. Pull-up Guide Assembly support.

8. Top Feed Paper Tray: raise to feed cut sheet paper from the top.

9. Paper Guide: can be adjusted as required to locate the left edge of cut sheet paper.

10. Top Cover: open and close for access, for example when changing a ribbon

cartridge. Keep closed for noise reduction.

Introduction > 13

NTERNAL VIEW

11. Paper Thickness Lever: set according to the thickness of the paper.

12. Ribbon Cartridge: holds the printer ribbon.

13. Print Head: prints the character on the paper.

14. Pull-up Guide assembly: remove whe n using Pull tractor and optional Cut-sheet

feeder.

EAR VIEW

15. USB connector: connect to USB interface cable.

16. Parallel connector: connect to parallel interface cable.

17. Optional Serial/Network connector: connect to serial or network.

18. Optional CSF/RPS connector: connect to cut-sheet feeder or roll paper stand.

19. Ventilator

20. A/C Input: connect to printer power cable.

Introduction > 14

NTERFACE SPECIFICATIONS

IEEE1284

ONNECTORS AND CABLE

PARALLEL INTERFACE SPECIFICATIONS

Connectors

Printer side:36-pin receptacle 57RE-40360-830B-D29BF (DDk Ltd.) or equivalent Cable side:36-pin plug 57FE-30360 (DDK Ltd.) or equivalent, or 57F-36H-3R straight

type with a metal hood (DDK Ltd.) or equivalent.

Cable

Use a cable less than 1.8 m in total length. (A shielded cable is required and use of twisted-pair wires is recommended for noise

prevention.)

ARALLEL INTERFACE SIGNALS

Pin No. Signal Direction

1 STROBE To printer Samples input data when changing from low

2 DATA BIT 1 To printer Input data: High level indicates “1” and low

3 DATA BIT 2

4 DATA BIT 3

5 DATA BIT 4

6 DATA BIT 5

7 DATA BIT 6

8 DATA BIT 7

9 DATA BIT 8

10 ACKNOWLEDGE From printer Indicates character input completion, or func-

11 BUSY From printer

12 PAPER END From printer High level indicates paper end. AckDataReq

13 SELECT From printer High level indicates select (on line) condition. Xﬂag

14 AUTO FEED To printer When "Auto Feed" in the menu is set as

16, 33 0 V – Signal ground.

CHASSIS GROUND

18 +5 V From printer +5V / 50mA **

19 to 30 0 V – Twisted pair return (for pin No. 1 to 11)

31 INPUT-PRIME To printer When this signal goes to the low level,

32 FAULT From printer This signal goes from high to low level when

15, 34

36 SELECT-IN To printer In the EPSON mode, when menu item "Print

– – Unused

––

level to high level.

level “0”.

tion operation end, at low level.

Indicates data cannot be received at high level. Data can be input at low level.

valid under EPSON mode, this signal goes to the low level and the printer generates a line feed after receiving CR code.

– Frame ground.

printer controller is initialized. The low level should be held for more than 0.5 ms.

paper runs out. (Possible to indicate error and Off-Line state.)

Fixed to High (Connected to +5 V thru 3.3 KΩ)

Suppress Effective" is Yes, and the SELECTIN signal is high, the DC1/DC3 code is valid, and invalid when the signal is low.

** When load is 50m A (more/less), volatage can drop or power can be cut off.

Description

Compatible Nibble

HostClk

PrtClk

PrtBusy

HostBusy

nDataAvail

IEEE1284 active

NOTE Connector pin arrangement for above.

Interface specifications > 15

ARALLEL INTERFACE LEVELS

Low level: 0.0 V to + 0.8 V High level: +2.4 V to +5.0 V

ARALLEL INTERFACE CIRCUITS

(a) Receiver

DATA BIT 1 to DATA BIT 8:

SN74LVC161284DGGR or equivalent

INPUT-PRIME, STROBE:

SN74LVC161284DGGR or equivalent

(b) Driver

ACKNOWLEDGE, PAPER END, SELECT, FAULT, BUSY

SN74LVC161284DGGR or equivalent

Signal Name R (Ω) C (pF)

INPUT-PRIME 47 1000

STROBE 47 47

ARALLEL INTERFACE TIMING CHART

DATA BIT1 to DATA BIT8

(H)

(L)

(H)

(L)

(H)

(L)

UPPORT MODE

STROBE

BUSY

ACKNOWLEDGE

> Compatible

1 μs min

DATA

1~500 μs

500 ns

max

1 μs min

T busy

1t1

2~8 μs

= 1~ 4 μs

> Nibble (PnP Device ID only)

Interface specifications > 16

NIVERSAL SERIAL BUS

(USB)

Universal Serial Bus Specification Revision 2.0 Full Speed mode compliance.

ONNECTORS

Printer Side: “B” Receptacle (Upstream Input to the USB Device) Cable Side: Series “B” Plug

ABLE

Length: Max. 5 m (Cable must be shielded and meet the USB Spec Rev 2.0 for normal operation.)

The cable is not supplied with the printer.

USB

INTERFACE SIGNALS

CONTACT NUMBER SIGNAL NAME

1 Vbus 2 D3 D+ 4 GND Shell Shield

NOTE Connector pin arrangement for above:

ODE AND CLASS OF DEVICE

> Full-speed driver > Self-powered device

ATA SIGNALLING RATE

Full-speed function – 12 Mb/s

Interface specifications > 17

NTERFACE CIRCUIT

TxD+

Full-speed

Buffer

+ 3.3V

IGNAL LEVEL

Input/output level

PARAMETER SYMBOL MIN. MAX. UNITS

Input levels:

High (driven) V High (floating) V Low V

Output levels:

Low OL 0.0 0.3 V High (driven) OH 2.8 3.6 V Output signal crossover

voltage

TxD-

IHZ

CRS

2.0 V

2.7 3.6 V

0.8 V

1.3 2.0 V

Signalling levels

Bus State

Differential “1” (D+)-(D-)> 200mV and D+ > V

Differential “0” (D-)-(D+)> 200mV and D- > V

Single-ended 0 (SE0) D+ and D- < V

Data J state:

Low-speed Full-speed

Data K state:

Low-speed Full-speed

Idle state:

Low-speed Full-speed

Resume state Data K state

Start-ofPacket (SOP)

End-of-Packet (EOP)

Disconnect (at downstream port)

Connect (at downstream port)

Reset D+ and D- < V

Differential “0” Differential “1”

Differential “1” Differential “0”

D- > V D+>V

Data lines switch from Idle to K state

SE0 for ≥ 1 bit time1followed by a J state for 1 bit time

SE0 for ≥ 2.5μs

Idle for ≥ 2ms Idle for ≥ 2.5μs

Required Acceptable

(max) D+ and D- < VIH(min)

(min) and D+ < VIL(max)

IHZ

(min) and D- < VIL(max)

IHZ

(max) for ≥ 10ms D+ and D- < VIL(max) for ≥ 2.5μs

Signalling Levels

(min) (D+)-(D-)> 200mV

(min) (D-)-(D+)> 200mV

D- > V

(min) and D+ < VIH(min)

IHZ

D+ > V

(min) and D- < VIH(min)

IHZ

SE0 for ≥ 1 bit time1followed by a J state

NOTE The width of EOP is defined in bit times relative to the device type receiving the EOP. The bit time is approximate.

Interface specifications > 18

IMING CHART

Packet voltage levels

Disconnect detection

VOH(min)

VIH(min)

VIL(max)

VOL(max)

VSS

VOH(min)

VIH(min)

VIL(max)

VOL(max)

VSS

Bus Idle

SOP

First Bit

of Packet

Last Bit

of Packet

SE0 Portion of EOP

Bus Driven to

J State at end

of EOP

Bus Floats

Bus Idle

VIL

VSS

D+/D-

D-/D+

Device

Connected

VIHZ(min)

Full-speed device connect detection

Device

Connected

D+

VIH

VSS

D-/D+

Differential data jitter

TPERIOD

Differential Data Lines (VCRS)

Crossover

Points

Consecutive

Transitions

TPERIOD + TxDJ1

Transitions

TPERIOD + TxDJ2

>2.5

Paired

μs

>2.5

μs

D-

Disconnect

Detected

Connect

Detected

TPERIOD = 12Mbps( –0.25%) TxDJ1 = Min-3.5ns~Max3.5ns TxDJ2 = Min-4ns~Max4ns

Differential-to-EOP transition skew and EOP width

Crossover Point

TPERIOD

Differential Data Lines

Crossover

Points

Diff. Data-to-

SE0 Skew

TPERIOD + TxDEOP

Interface specifications > 19

Extended

TxDEOP = -2ns~5ns

Source EOP Width : TFEOPT(160ns~175ns)

Receiver EOP Width : TFEOPT(80ns~)

Receive jitter tolerance

TPERIOD

Differential Data Lines

TxJR

Consecutive

Transitions

TPERIOD + TxJR1

TPERIOD + TxJR2

Paired

Transitions

TxJR1

TxJR2

TxJR1 = Min-18.5ns~Max18.5ns TxJR2 = Min-9ns~Max9ns

Interface specifications > 20

PTION INTERFACE SPECIFICATIONS

ENERAL SPECIFICATIONS

ITEM DESCRIPTION

Interface system RS232C Data input Serial Input (Start-Stop synchronisation) Baud rate 300, 600, 1200, 2400, 4800, 9600, 19200 BPS Data word length 7 bits or 8 bits Parity

Stop bit length 1 bit, 2bit or more Message buffer length Buffer size is selected by ‘Receive Buffer Size’ in MENU. Communication protocol Ready/Busy

1. Setting the data length to 7 bits with no pa rity is not recommended.

Odd, even, or no parity

X-ON/X-OFF Ready/Busy & X-ON/X-OFF (ML5720/ML5721)

Interface specifications > 21

NTERFACE SIGNALS

PIN NO. SIGNAL CODE SIGNAL FUNCTION

1 Protective

Ground

2 Transmitted

3 Received Data RD To printer Data to printer 4 (Note 2) Request to Send RTS From

6 (Note 3) Data Set Ready DSR To printer Indicates that data can be sent

7 Signal Ground SG — Signal ground 11 (Note 2) Supervisory

20 (Note 2) Data Terminal

5, 8 to 10, 12 to 19, 21 to 25

Data

Send Data

Ready

— — — Unused

PG — Frame ground

TD From

printer

SSD From

printer

DTR From

printer

Data from printer

Signal to indicate printer cannot receive data in printer Busy/Ready protocol

(Printer receives data after confirming this signal as a SPACE.)

Signal to indicate printer cannot receive data in printer Busy/Ready protocol

NOTE

1. Connector pin arrangement for above:

(Viewed from interface cable side)

2. SSD signal output can be selected from pins 4, 11, 20 by the MENU.

3. DSR signal valid/invalid can be set by the MENU.

LECTRICAL CHARACTERISTICS

Signal levels

RS-232C interface signal levels are as specified below, and meet the EIA Standard RS232C:

–15 to –3 V: MARK = OFF = LOGIC “1” +15 to +3 V: SPACE = ON = LOGIC “0”

Interface specifications > 22

Line driver

INPUT

Equivalent to HIN202

+5V

400kΩ

OUTPUT

NOTE The above figures are the standard values for a load of 3 Kohm, 15 pF.

Line receiver

NOTE If the power on the input side is OFF, the output of the receiver becomes high (+2.4 V or more) at TTL level.

OUTPUT

+5V

-5V

Equivalent to HIN202

INPUT OUTPUT

5kΩ

+3V

-3V

INPUT

+10V

-10V

+30V

-30V

Interface specifications > 23

NTERFACE TIMING CHARTS

Receiving timing chart

DSR signal

NOTE DSR signal valid/invalid can be set by the Menu.

SSD signal timing chart

SPACE

MARK

SPACE

MARK

DTR

Start bit

Stop bit

0.5 bit

More than 0 μs More than 300 μs

Data

Stop bit

SPACE

MARK

0.5 bit Start bit

MAX 5 ms

BUSY

READY

ECEIVING MARGIN

Receiving margin is more than 37% at any baud rate.

ESCRIPTION OF COMMUNICATION PROCEDURES

The types of protocol can be selected by menu communication procedures: READY/BUSY, X-ON/X-OFF and READY/BUSY & X-ON/X-OFF (ML5720/ML5721).

NTERFACE CONTROL CODE

The following function codes are used in the high-speed serial interface:

COMMAND CODE

DC1 (17)D (11)H DC3 (19)D (13)H

NOTE Characters to be printed according to the parity error indication code (40)H will differ depending on the setting of the printer character set. Refer to the printer User’s Guide.

Interface specifications > 24

Ready/Busy protocol

Block format Free Error indication The parity error indication is printed as

character 40(H).

Busy state indication The busy signal turns on (becomes Busy)

Timing chart

RD DATA 1 DATA 2

Threshold of the characters in the buffer

DTR

X-ON/X-OFF protocol

Block format Free Error indication The parity error indication character is

512

when the space in the interface buffer has become less than 256 bytes. The busy signal turns off (becomes Ready) after 200 ms or 1 second has passed if 256 bytes have recovered within 200 ms or 1 second. If the recovery time exceeds 200 ms or 1 second, the busy signal turns off (becomes Ready) immediately after the recovery has occurred.

ON (BUSY) OFF (READY

200 ms or 1 second minimum

converted into code 40(H).

Timing chart

NOTE If data is transferred when the printer is still BUSY, the printer sends a DC3 code every time it receives data.

Busy state indication The DC3 will be sent to the transmission si de

immediately after the space in the interface buffer has become less than 256 bytes to indicate that receiving is impossible. The transmission of the DC3 stops when data receiving has stopped. If the recovery time for 256 bytes is within 200 ms or 1 second after the DC3 is sent, DC1 will be sent 200 ms or 1 second after the recovery to indicate that receiving is possible. If th e recovery time exceeds 200 ms or 1 second, the DC1 is sent immediately after the recovery has occurred.

256 characters or less

TD PRINTING

BUSY state

OFF

DATA 1

3-C

-CD

200 ms or 1 second minimum

Waiting for BUSY state to be free

DATA

1CD

Interface specifications > 25

OCAL TEST FUNCTION

Circuit Test mode setting

Diagnostic: Test set by menu Test connector: Connect the test connectors as shown below to the interface connectors.

RTS

Equivalent to Cannon DB-25P

CTS

SSD

DTR

DSR

Circuit Test mode function

After the settings outlined in Circuit Test mode setting are completed and power is turned on, the serial interface checks the message buffer memory and interface driver and receiver circuits, then prints all characters. To start and stop this test, press the SEL button on the front of the printer. Details of this test are explained below.

1. Print the program revision with two numerical characters.

2. Print “LOOP TEST.”

3. Check memory for message buffer.

Print “GOOD” if memory check is OK, and print “BAD” if memory check fails.

4. Output LOW to DTR, RTS, and SSD signals. If a CTS, DSR, or CD signal is HIGH, print “BAD”. If the CTS, DSR, and CD signals are all LOW, print “IF GOOD”.

Output HIGH to DTR, RTS, and SSD signals. If a CTS, DSR, or CD signal is LOW, print “IF BAD.” If the CTS, DSR and CD signals are all HIGH, print “IF GOOD.”

5. Transmit characters from code 20H to 7FH by TD signals. At the same time, characters are received from the RD signal and stored in the message buffer.

6. Print the characters that were stored in the message buffer as indicated in Step 5.

7. Repeat from Step 1.

Interface specifications > 26

PERATOR INTERFACE

PERATOR PANEL FUNCTIONS

The operator panel buttons and LEDs are located as follows:

Button functions depend on the printer state which can be any one of:

> Print Mode (for a summary of print modes and features see “Appendix B – Print

modes/features” on page 311.)

> Hex Dump Mode > Menu Mode > Test Mode > Power On Mode > Limited Operation

Operator interface > 27

RINT MODE

BUTTON STATUS FUNCTION

SEL On-line Sets the printer to off-line.

Off-line Sets the printer to on-line.

LF/FF On-line/Off-line Feeds paper by one line.

When pressed for more than 500ms, performs form feed.

LOAD/EJECT On-line/Off-line

When no paper is loaded When paper is loaded: Continuous forms Cut-sheet paper Pull feed

TEAR On-line/Off-line

Continuous forms

Pull feed PRINT QUALITY On-line/Off-line Select a font. CHR. PITCH On-line/Off-line Select a character pitch.

Performs paper feed.

Retracts the form to the Pin Tractor. Ejects the cut sheet. Ineffective.

Delivers the continuous form to the cut position.

Ineffective.

PRINT SPEED On-line/Off-line Select print speed. SEL + LF/FF On-line/Off-line Ineffective. SEL + LOAD/EJECT On-line Ineffective.

Off-line Holding down the SEL button and

SEL + CHR.PITCH On-line Ineffective.

Off-line Selects MENU configuration. LF/FF + LOAD/EJECT On-line/Off-line Ineffective. LOAD/EJECT + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1 /144 inch

ML5790/ML5791 Performs microfeed (forward) 1 /180 inch

LOAD/EJECT + LF/FF On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

TEAR + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1 /144 inch

pressing the LOAD/EJECT button initialises the new Menu settings.

when paper is loaded.

when paper is in tear off position.

ML5790/ML5791 Performs microfeed (forward) 1 /180 inch

Operator interface > 28

when paper is in tear off position.

BUTTON STATUS FUNCTION

TEAR + LF/FF On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

PRINT QUALITY + SEL On-line/Off-line

ML5720/ML5721 Performs microfeed (reverse) 1/144 inch

ML5790/ML5791 Performs microfeed (reverse) 1/180 inch

PRINT QUALITY + LF/FFOn-line/Off-line

ML5720/ML5721 Performs microfeed (forward) 1 /144 inch

ML5790/ML5791 Performs microfeed (forward) 1 /180 inch

when paper is in tear off position.

when paper is in Top of Form position.

CHR.PITCH + PRINT SPEED

On-line/Off-line Enters menu mode.

Operator interface > 29

HEX D

UMP MODE

, M

ENU MODE

, T

EST MODE

BUTTON HEX DUMP MODE MENU MODE TEST MODE

SEL On-line: Sets printer Off-

line. Off-line: Sets printer Online.

LF/FF On-line: Feeds paper by

one line. When pressed for more

than 400ms, performs form feed.

Off-line: When paper is loaded, performs form feed for continuous forms and ejects cut-sheet paper.

LOAD/EJECT

TEAR

PRINT QUALITY

> When no paper is loaded:

Performs paper feed.

> When paper is loaded:

> Continuous

forms:Retracts the form to the Pin Tractor.

> Cut-sheet paper:

Ejects the cut sheet.

> Pull feed: Ineffective.

> Delivers the continuous

form to the cut position.

> Pull Feed: Ineffective.

- Temporarily suspends test printing.

Increments a group in a ‘GROUP’.

Increments an item in an ‘ITEM’.

Increments a set in a ‘SET’.

Selects Print Quality

CHR. PITCH Selects Character Pitch PRINT SPEED Selects Print Speed. SEL + LF/FF Decrements a group in

a ‘Group’.

SEL + LOAD/ EJECT

SEL + TEAR Decrements a set in a

CHR. PITCH + PRINT SPEED

Decrements an item in an ‘ITEM’.

‘SET’. Exits Menu mode.

Operator interface > 30

NDICATORS

NOTE In recovery impossible alarm state, both SEL and ALARM LEDs blink.

INDICATORS

COLOUR STATUS MEANING

(LED)

SEL Green ON Printer is on-line i.e. is available to print.

OFF Printer is off-line i.e. is not available to print. FLASHING When flashing together with the ALARM LED,

ALARM Red ON Paper end status i.e. no paper present.

OFF Printer is in normal state. FLASHING When flashing together with the SEL LED,

printing cannot be resumed at this stage. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again.

If the problem is still there after you turn the power ON again, contact your dealer.

When flashing together with TEAR LED, indicates Top Cover is open.

printing cannot be resumed at this stage. Turn the power OFF, verify that the carriage moves properly, then turn the power ON again.

If the problem is still there after you turn the power ON again, contact your dealer.

Indicates paper jam/media switch/incorrect paper lever setting status

When flashing together with TEAR LED, indicates High temperature alarm status.

TEAR Green ON Menu mode.

OFF Tear down position. FLASHING Tear up position.

SLEEP Green FLASHING Low power consumption mode.

ML5720/ML5721

PRINT QUALITY Green ON

> LED 3

> LED 2 > LED 2 and 3 > LED 1 > LED 1 and 3

> LED 1 and 2

Without ALARM LED flashing:

> Indicates SSD is selected. > Indicates HSD is selected. > Indicates DRAFT is selected. > Indicates COURIER is selected. > Indicates GOTHIC is selected. > Indicates OCR-B is selected.

Operator interface > 31

INDICATORS

COLOUR STATUS MEANING

(LED)

CHR.PITCH Green ON

LED 1

> LED 2 > LED 1 > LED 1 and 2

With TEAR LED ON: Printer is in MENU setting mode.

With Alarm LED flashing:

> Indicates paper loading jam. > Indicates paper park/eject jam. > Indicates incorrect media setting.

> LED 2 > LED 1 > LED 1 and 2

FLASHING

> LED 2

FLASHING

> LED 2 > LED 1 > LED 1 and 2

ML5790/ML5791

PRINT QUALITY Green ON

> LED 3

> LED 2 > LED 2 and LED 3 > LED 1 > LED 1 and LED 3 > LED 1 and LED 2 > LED 1, LED 2 and

FLASHING

> LED 3 > LED 2 > LED 2 and LED 3 > LED 1

Without Alarm LED flashing:

> Indicates 10CPI is selected. > Indicates 12CPI is selected. > Indicates 15CPI is selected.

With Alarm LED flashing:

> Indicates incorrect paper lever setting.

Without Alarm LED flashing:

> Indicates 17CPI is selected. > Indicates 20CPI is selected. > Indicates PROP (Proportional) is selected.

Without ALARM LED flashing:

> Indicates HSD is selected. > Indicates DRAFT is selected. > Indicates COURIER is selected. > Indicates ROMAN is selected. > Indicates SWISS is selected. > Indicates SWISS-B is selected. > Indicates ORATOR is selected.

LED 3

Without ALARM LED flashing:

> Indicates GOTHIC is selected. > Indicates PRESTIGE is selected. > Indicates OCR-A is selected. > Indicates OCR-B is selected.

CHR.PITCH Green ON

LED 1

> LED 2 > LED 1 > LED 1 and LED 2

FLASHING

> LED 2 > LED 1 > LED 1 and LED 2

FLASHING

> LED 2

PRINT SPEED Green ON

> LED 2 ON

> LED 1 ON > LED 1 and 2 ON

FLASHING

> LED 2 FLASHING > Indicates HIGH COPY is selected.

With TEAR LED ON: Printer is in the MENU setting mode.

Without ALARM LED flashing:

> Indicates 10CPI is selected. > Indicates 12CPI is selected. > Indicates 15CPI is selected.

Without ALARM LED flashing:

> Indicates 17CPI is selected. > Indicates 20CPI is selected. > Indicates PROP (Proportional) is selected.

With ALARM LED flashing:

> Indicates paper loading jam. > Indicates paper park/eject jam. > Indicates incorrect media setting.

With Alarm LED flashing:

> Indicates incorrect paper lever setting.

With TEAR LED OFF:

> Indicates NORM (Normal Speed) is selected. > Indicates HIGH SPEED is selected. > Indicates QUIET print is selected.

Operator interface > 32

LARM/ERROR INDICATIONS

ECOVERABLE ALARMS

NOTE O : LED continuously ON

X : LED OFF * : LED blinking (500 ms ON, 500 ms OFF) Blank : Current LED indication retained

LED

PRINTER STATUS

Power ON

Power OFF

Select (on-line)

Deselect (offline)

Paper end

Print suppress

-ion Sleep

mode

SEL ALARM TEAR/

Green Red Green Green

PRINT QUALITY CHR.PITCH PRINT SPEED SLEEP

LED1

Green LED2

Green LED3

Green LED1

Green LED2

Green LED1

Green LED2

Green

O O O OOOO OO O O

X X X XXXXXXX X

X XXXXXXX*

Paper loading jam

Paper eject/ parking jam

Media set alarm

Paper lever alarm

Unrecoverable alarm

Thermal alarm

Menu mode

X* O

X* OO

X* *

Operator interface > 33

LED

SEL ALARM TEAR/

PRINT QUALITY CHR.PITCH PRINT SPEED SLEEP

PRINTER STATUS

Green Red Green Green

LED1

Green LED2

Green LED3

Select Menu configur

-ation 1 Select

Menu configur

-ation 2 Tear up

position Cover

open ML5720/ML5721 Font SSD O HSD O DRAFT OO

Green LED1

Green LED2

Green LED1

Green LED2

Green

NLQ

Courier NLQ

Gothic NLQ

OCR-B Character Pitch 10 CPI O 12 CPI O 15 CPI OO 17 CPI * 20 CPI * Propor-

tional ML5790/ML5791 Font HSD O DRAFT O LQ

Courier LQ

Roman LQ Swiss OO

Operator interface > 34

LED

SEL ALARM TEAR/

PRINT QUALITY CHR.PITCH PRINT SPEED SLEEP

PRINTER STATUS

LQ Swiss

Green Red Green Green

LED1

Green LED2

Green LED3

Green LED1

Green LED2

Green LED1

Bold LQ

OOO

Orator LQ

Gothic LQ

Prestige LQ OCR-

A LQ OCR-

B Character Pitch 10 CPI O 12 CPI O 15 CPI OO 17 CPI *

Green LED2

Green

20 CPI * Propor-

tional Print Speed (ML5720/ML5721/ML5790/ML5791) Normal O High

Speed Quiet OO High

Copy

Operator interface > 35

NRECOVERABLE ALARMS

Unrecoverable alarms are shown below. The numbers of blinks of the alarms indicate the states of the alarms.

Alarm indication consists of main blinking and sub-blinking. Main blinking is the concurrent blinking of the SEL and ALARM LEDs and sub-blinking is the blinking of only the SEL LED.

ALARM INDICATIONS

ALARM CONTENTS

MAIN BLINKING SUB-BLINKING

1 1 Print head homing alarm

2Spacing alarm 6 FAN alarm (print head) 7 FAN alarm (power supply)

21Program ROM check alarm

2 CG check alarm 7 Program ROM mismatch

alarm 33EEPROM alarm 4 1 CPU internal RAM check

alarm

2 CPU alarm (Pre-fetch abort

3 CPU alarm (Data abort

4 CPU alarm (Undefined

5 CPU alarm (Watch Dog

6 LSI alarm (Bus control

7 LSI alarm (DMA translator

9 Interrupt control alarm

5 1 Firmware program alarm

2 OS control alarm (Data

6 1 Paper Edge Sensor alarm 9 1 Head thermistor alarm

4 Head thermistor alarm

alarm)

abort alarm)

Timer alarm)

alarm)

queue full)

(Open status)

(Short circuit status)

Operator interface > 36

ENU SELECTION

VERVIEW

Features selected in Menu mode become the default features for the printer each time it is powered on. The Menu function allows features to be activated without the use of a software command but software commands override Menu settings. For details on Button functions in Print mode refer to “Print mode” on page 28.

PERATION

1. To enter Menu M ode:

(a) Ensure that the printer is turned on. Place the cut sheet on the paper tray, the

paper is gripped by the printer.

(b) Press and hold down the CHR.PITCH button and then the PRINT SPEED button

to enter menu mode.

2. On entering the Menu mode, “Menu Print?” is printed. See button functions in “Print mode” on page 28 for a description of how to navigate

the menus.

3. Press the Print Quality button to print all Menu items, or Press the LF/FF (GROUP) or LOAD/EJE CT ( I TEM) or TEAR (SET) button to print the first menu item.

4. To change a setting: (a) Press LF/FF button to step forward and SEL + LF/FF to step backward to the

required group.

(b) When in the required Group, press LOAD/EJECT button to step forward and SEL

+ LOAD/EJECT to step backward to the required item.

to step backward to the required value.

5. Repeat these steps to change the settings for other items.

6. To exit menu settings confirmation, save the current settings, press CHR PITCH and

PRINT SPEED buttons together. Save menu is printed.

7. Press LOAD/EJECT button to eject the cut sheet paper.

8. The TOF position is not affected by Menu mode.

(However, TOF setting is executed if page length changes.)

Operator interface > 37

ENU ITEMS

In the menu settings tables below, factory default settings are shown in bold.

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Printer Control

Font Print Mode Select quality of ANK

Emulation Mode Select emulation mode. IBM PPR, EPSON FX, MLEPSON LQ, IBM PPR,

characters.

Draft mode Select the draft mode. HSD

Pitch Select character pitch. 10 CPI

Proportional Spacing

Style Select either font style. Normal

Select whether to use proportional spacing or not.

DRAFT

NLQ Courier NLQ Gothic NLQ OCR-B HSD SSD

SSD

12 CPI 15 CPI

17.1 CPI 20 CPI

Yes No

Italics

IBM AGM

LQ Courier

LQ Roman LQ Swiss LQ Swiss Bold LQ Orator LQ Gothic LQ Prestige LQ OCR- A LQ OCR- B DRAFT HSD

Size Select the character

scale size. Selects both double width and double height character or single width and single height characters.

Single

Double

Operator interface > 38

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Symbol Sets

Character Set Select character code

table.

Language Set Select a language

character set.

Set I

Set II

Standard (ML mode only) Line Graphics (ML mode only) Block Graphics (ML mode only)

ASCII

French German British Danish I Swedish I Italian Spanish I Japanese Norwegian Danish II Spanish II Latin American Dutch TRS80 Swedish II Swedish III Swedish IV Turkish Swiss I Swiss II Publisher

Set I

Set II

ASCII

French German British Danish I Swedish I Italian Spanish I Japanese Norwegian Danish II Spanish II Latin American Dutch Swedish II Swedish III Swedish IV Turkish Swiss I Swiss II Publisher

Zero Character Select either print font

pattern to receive a zero character located at 30H in ANK code.

Slashed

Unslashed

Slashed

Unslashed

Operator interface > 39

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Symbol Sets cont.

Code Page Select a code page. USA

Canada French Multilingual Portugal Norway Turkey Greek_437 Greek_869 Greek_928 Greek_437 CYPRUS Polska Mazovia Serbo Croatic I Serbo Croatic II ECMA-94 Hungarian CWI Windows Greek Windows East Europe Windows Cyrillic East Europe Latin II 852 Cyrillic I-855 Cyrillic II-866 Kamenicky(MJK) ISO Latin 2 Hebrew NC (862) Hebrew OC Turkey_857 Latin 5 (Windows Turkey) Windows Hebrew Ukrainian Bulgarian ISO Latin 6 (8859/

10) Windows Baltic Baltic_774 KBL-Lithuanian Cyrillic Latvia Roman-8 Icelandic-861 Multilingual 858 ISO 8859-15 Greek_737 POL1 Macedonian BRASCII Abicomp

USA

Canada French Multilingual Portugal Norway Turkey Greek_437 Greek_869 Greek_928 Greek_437 CYPRUS Polska Mazovia Serbo Croatic I Serbo Croatic II ECMA-94 Hungarian CWI Windows Greek Windows East Europe Windows Cyrillic East Europe Latin II 852 Cyrillic I-855 Cyrillic II-866 Kamenicky (MJK) ISO Latin 2 Hebrew NC (862) Hebrew OC Turkey_857 Latin 5 (Windows Turkey) Windows Hebrew Ukrainian Bulgarian ISO Latin 6 (8859/

10) Windows Baltic Baltic_774 KBL-Lithuanian Cyrillic Latvia Roman-8 Icelandic-861 Multilingual 858 ISO 8859-15 Greek_737 Asmo 449+ Asmo 708 Arabic 864 Windows Arabic POL1 Macedonian BRASCII Abicomp

Slashed Letter 0 Set whether to convert

slashed 0 located at 9BH and 9DH in USA code page or not.

Operator interface > 40

Yes

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Rear Feed (Push)

Line Spacing Select line feed pitch. 6 LPI

8LPI

Form Tear-Off When printer is idle (0.5,

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

Skip Over Perforation

Page Width (Displayed only for ML5721 and ML5791)

Page Length Select the length of a

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

continuous form.

Manual

0.5 sec

1.0 sec

2.0 sec

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Initial Position Select the vertical print

position when printer is turned on.

Cut Position Adjust Select an adjustment

value for the position to cut the end of a continuous form.

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of a continuous form.

Operator interface > 41

Print Position

Cut Position

-20 ~ -1

+1 ~ +20

-20 ~ -1

+1 ~ +20

-30 ~ -1

+1 ~ +30

-30 ~ -1

+1 ~ +30

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Rear Feed (Push) cont.

Front Feed (Push)

Continuous Paper Top of Form

LF Revise Adjust the line feed

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Form Tear-Off When printer is idle (0.5,

Select an adjustment value for the reference position in regard to the Top of Form of a continuous form.

amount.

travel when printing narrow columns. Select Mode1 for ML5720 and ML5790.

Select Mode 1 or Mode 2 for ML5721.

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-2

-1

+1 +2

Default

Mode1 Mode2

8LPI

Manual

0.5 sec

1.0 sec

2.0 sec

Skip Over Perforation

Page Width (Displayed only for ML5721 and ML5791)

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

Operator interface > 42

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Front Feed (Push) cont.

Page Length Select the length of a

continuous form.

Initial Position Select the vertical print

position when printer is turned on.

Cut Position Adjust Select an adjustment

value for the position to cut the end of a continuous form.

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of a continuous form.

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Print Position

Cut Position

-20 ~ -1

+1 ~ +20

-20 ~ -1

+1 ~ +20

-30 ~ -1

+1 ~ +30

-30 ~ -1

+1 ~ +30

Continuous Paper Top of Form

LF Revise Adjust the line feed

Centering Position Select to limit printhead

Select an adjustment value for the reference position in regard to the Top of Form of a continuous form.

amount.

travel when printing narrow columns. Select Mode1 for ML5720 and ML5790.

Select Mode 1 or Mode 2 for ML5721 and ML5791.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-2

-1

+1 +2

Default

Mode 1 Mode 2

Operator interface > 43

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Pull Line Spacing Select line feed pitch. 6 LPI

8 LPI

Skip Over Perforation

Page width (Displayed only for ML5721/ML5791)

Page Length Select the length of a

Select whether to skip over perforation or not. (When a skip over perforation command is received, the received command is given priority.)

Change to 8” to print on narrow paper.

continuous form.

25.4 mm (1”)

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

431.8 mm (17”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Cut Sheet Top

LF Revise Adjust the line feed

amount.

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Form Tear-Off (Displayed when connected to the RPS)

Page width (Displayed only for ML5721/ML5791)

travel when printing narrow columns. Select Mode1 for ML5720/ML5790.

Select Mode 1 or Mode 2 for ML5721/ML5791.

When printer is idle (0.5,

1.0 or 2.0 sec), paper is advanced from the current print position to the tear position. When data is received, paper is moved to its original printing position.

Change to 8” to print on narrow paper.

-2

-1

+1 +2

Default

Mode 1 Mode 2

8 LPI

Manual

0.5 sec

1.0 sec

2.0 sec

345.44 mm (13.6”)

203.2 mm (8”)

-14 ~ -1

+1 ~ +14

Operator interface > 44

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Top cont.

Page Length Select the page length of

cut sheet.

Initial Position (Displayed when connected to the RPS)(ML5720/ ML5790)

Cut Position Adjust (Displayed when connected to the RPS)(ML5720/ ML5790)

Select the vertical print position when printer is turned on.

Select an adjustment value for the position to cut the end of a continuous form.

279.4 mm (11” in)

296.3 mm (11 2/3”)

304.8 mm (12”)

420.9 mm (16.57”)

355.6 mm (14”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

Print Position

Cut Position

-20 ~ -1 0 +1 ~ +20

-30 ~ -1 0 +1 ~ +30

Wait Time Select the waiting time

between setting paper on the tray and feeding it while the printer is waiting for paper to be fed in cut sheet manual feed mode.

Paper Length Control

Cut Sheet Auto Eject Position

TOF Adjust Select an adjustment

Control the page length of cut sheet.

Select a printable area at the bottom of cut sheets of paper in cutpaper mode (the character center position.)

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in /1/144” (ML5720/ML5721) and 1/180” (ML5790/ ML5791) increments.

Invalid

0.5 sec

1.0 sec

1.5 sec

2.0 sec

3.0 sec

by MENU setting

by Actual Page Length

6.35 mm (3/12”)

12.70 mm (6/12”)

14.82 mm (7/12”) Invalid

-20 ~ -1 0 +1 ~ +20

by MENU setting

by Actual Page Length

-30 ~ -1 0 +1 ~ +30

Operator interface > 45

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Top cont.

Cut Sheet Front

Cut Sheet Top of Form

LF Revise Adjust a line feed in the

Centering Position Select to limit printhead

Line Spacing Select line feed pitch. 6 LPI

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

cut sheet mode.

travel when printing narrow columns. Select Mode1 for ML5720.

Select Mode 1 or Mode 2 for ML5721.

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-14 ~ -1

+1 ~ +14

Default

Mode 1 Mode 2

8 LPI

Page width (Displayed only for ML5721/ML5791)

Page Length Select the length of cut

Wait Time Select the waiting time

Change to 8” to print on narrow paper.

sheet.

between setting paper on the tray and feeding it while the printer is waiting for paper to be fed in cut sheet manual feed mode.

345.44 mm (13.6”)

203.2 mm (8”)

279.4 mm (11”)

296.3 mm (11 2/32”)

304.8 mm (12”)

355.6 mm (14”)

420.9 mm (16.57”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”) Invalid

0.5 sec

1.0 sec

1.5 sec

2.0 sec

3.0 sec

Paper Length Control

Control the page length of cut sheet.

Operator interface > 46

by MENU setting

by Actual Page Length

by MENU setting

by Actual Page Length

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Cut Sheet Front cont.

Cut Sheet Auto Eject Position

TOF Adjust Select an adjustment

Cut Sheet Top of Form

Select a printable area at the bottom of cut sheet paper in cut sheet mode (the character centre position).

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in 1/144” (ML5720/21) and 1/180” (ML5790/91) increments.

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

6.35 mm (3/12”)

12.70 mm (6/12”)

14.82 mm (7/12”) Invalid

-20 ~ -1 0 +1 ~ +20

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”) User Top of Form

-30 ~ -1 0 +1 ~ +30

LF Revise Adjust a line feed

amount in the cut sheet mode.

Centering Position Select to limit printhead

travel when printing narrow columns. Select Mode1 for ML5720/ML5790.

Select Mode 1 or Mode 2 for ML5721/ML5791.

Set-up Graphics Select the printing

direction when doubleheight print data exists in a line.

7 or 8 Bits Graphics (Displayed only for ML Emulation)

Receive Buffer Size

Select to change graphics settings.

Select size of the received buffer.

When “1 Line” is selected, the receive buffer size is set to 2 k bytes.

-14 ~ -1

+1 ~ +14

Default

Mode 1 Mode 2

Uni-directional

Bi-directional

0 K 1 Line 32 K 64 K

128 K

Operator interface > 47

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Paper End Detection

Print Registration 1Adjust the print starting

Print Registration 2Adjust the print starting

Print Registration 3Adjust the print starting

Print Registration 4Adjust the print starting

Select whether to detect paper end or not. Change to OFF to override the sensor and print closer to the bottom of the page.

position on printing in the reverse direction. (The position moves to the right or left in 1/720 in increments.)

On Off

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

-10 ~ -1

+10 ~ +1

7 or 8 Bits Data Word

Operator Panel Function

Reset Inhibit Changing this to Yes

Print Suppress Effective

Auto LF Select whether to

Auto CR (Displayed only for IBM emulation)

Select data word lengths.

Select full or limited operation.

prevents a reset signal from the computer from resetting the printer to its defaults.

Select whether to enable or disable a print suppress setup command.

perform auto LF operation or not upon receiving a CR code. If your print out is consistently double spaced, select No, if it overprints, select Yes.

Select Yes to add a carriage return when a Line Feed is received at the end of a line.

8 Full Operation

Limited Operation

Yes

Operator interface > 48

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Print DEL Code (Displayed only for ML Emulation)

SI Select Pitch (10 CPI) (Displayed only for IBM emulation)

SI Select Pitch (12 CPI) (Displayed only for IBM emulation)

Time Out Print Select valid or invalid. Invalid

Auto Select Determines whether or

Host Interface Selects which interface

Change the setting to Yes to print the DEL code (decimal 27) as a solid box.

Select how to handle an SI command received in 10 CPI mode.

Select how to handle an SI command received in 12 CPI mode.

not the printer will automatically be selected after you load in paper. Select No if you want to set the Top of Form position.

the printer uses to receive printing commands.

Yes

17.1 CPI

15 CPI

12 CPI

20 CPI

Valid Yes

Auto Interface

Parallel USB Optional

I/F Time Out Sets the length of time

before the interface switches to idle status when no printing commands have been received.

ESC SI Pitch (Displayed only for IBM emulation)

Select Language Set

Print Style Select the printer impact

Select Quiet Mode Select Quiet print mode. Mode 1

Select High Copy Mode

Sets the character pitch used when the ESC SI command is received.

Changing the language set replaces certain standard symbols with special characters used in foreign languages.

mode.

Select High Copy print mode.

15 sec

30 sec 45 sec 1 min 2 min 3 min 4 min 5 min

17.1 CPI

20 CPI

Combined

Code Page Only

Normal

High Speed Quiet High Copy

Mode 2

Mode 1

Mode 2 Mode 3 Mode 4

Revers e Feed Control

Set reverse feed control. TOF Stop

TOF Ov er

Operator interface > 49

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Set-up cont.

Print Direction at DH Mode

Sleep Mode Set whether to enable or

Sleep Time Set idle time to enter

Pin Control Select whether to have

Pin Control Select Select the method to

Paper End Select when to detect

FF Function Set feeding operation

Cut Sheet Park Function

Select the print direction at the double height printed.

disable sleep mode.

sleep mode.

or not have print control during line printing.

print lines when Special is selected in Pin Control menu.

Paper End.

upon receiving an FF code after cut paper is fed.

Select Valid to enable paper feed out of the cut sheet.

Uni-directional

Bi-directional

Enable

Disable

5 min

10 min 15 min 30 min 60 min

- Standard Special

- Mode1 Mode2

On-line

Off-line Eject

Form Feed

Invalid

Valid

Parallel I/F

Serial I/F (Displayed when connected to Serial Interface)

Feed Up when Menu Printing

I-prime Select whether to print

Auto Feed XT (Displayed only for EPSON emulation)

Bi-direction Set whether to return a

Parity None: Absence of parity

Serial Data 7/8 Bits

Protocol Select an I/F Busy

Select Yes to move the paper to the top cover to see the MENU printing.

or clear buffer contents upon initialisation by receiving I-PRIME.

Select the validity of an Auto Feed XT signal.

device ID or not in accordance with IEEE1284.

bit Odd: Odd parity Even: Even parity Ignore: Do not convert the character to ox40 in case of parity error.

Select Serial bit. 8 bit

control method.

Yes

Invalid

Buffer Print

Buffer Clear

Valid

Invalid

Enable

Disable

None

Odd Even Ignore

7 bit Ready/Busy

X-On/X-OFF

Ready/Busy & X-ON/X-OFF

Operator interface > 50

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

Serial I/F cont. (Displayed when connected to Serial Interface)

Diagnostic Test Select to perform input/

output diagnosis of RS-232C interface signals.

Busy Line Select to set the Busy

Line.

Baud Rate Select to set the Baud

Rate.

DSR Signal Select the DSR Signal. Valid

DTR Signal Select a method to

switch a DTR signal of a serial interface.

Busy Time Select the minimum

time between BUSY to READY.

Stop Bit Select the stop bit. 1 bit

Yes

SSDSSD+

DTR

RTS

9,600 bps

4,800 bps 2,400 bps 1,200 bps 600 bps 300 bps 19,200 bps

Invalid

Ready on Power Up

Ready on S elec t

0.2 sec

1.0 sec

2 bit

CSF Bin 1 (Display-

ed when Single-bin Cut-sheet feeder is installed)

Receive error Select the receive error. Checked

Unchecked

Line spacing Select line feed pitch 6 LPI

8 LPI

Page Width (Displayed only for ML5721/ML5791)

Page Length Select the length of cut

Cut Sheet Auto Eject Position

Change to 8 inch to print on letter size paper.

sheet.

Select a printable area at the bottom of cut sheet paper in cut sheet mode (the character centre position).

203.2 mm (8”)

345.44 mm (13.6”)

279.4 mm (11”)

296.3 mm (11 2/3”)

304.8 mm (12”)

355.6 mm (14”)

420.9 mm (16.57”)

76.2 mm (3”)

82.6 mm (3.25”)

84.7 mm (10/3”)

88.9 mm (3.5”)

93.1 mm (11/3”)

101.6 mm (4”)

127.0 mm (5”)

139.7 mm (5.5”)

152.4 mm (6”)

177.8 mm (7”)

203.2 mm (8”)

215.9 mm (8.5”)

6.35 mm (3/12 in)

12.7 mm (6/12 in)

14.82 mm (7/12 in)

Operator interface > 51

GROUP ITEM FUNCTION SETS

ML5720/ML5721 ML5790/ML5791

CSF Bin 1 cont.

(Displayed when Single-bin Cut-sheet feeder is installed)

TOF Adjust Select an adjustment

value for the reference position in regard to the TOF position of cut sheet paper.

The position moves to the rear of the form by (+) and to the top of the form by (-) in 1/60 in increments.

Cut Sheet Top Of Form

LF Revise Adjust a line feed

Select the reference position for the TOF position when feeding cut sheet. (Up to the mid-section of characters in the first line.)

amount in the cut sheet mode.

-20 ~ -1

+1 ~ +20

2.12 mm (1/12”)

4.23 mm (2/12”)

6.35 mm (3/12”)

8.47 mm (4/12”)

10.58 mm (5/12”)

12.70 mm (6/12”)

14.82 mm (7/12”)

16.93 mm (8/12”)

19.05 mm (9/12”)

21.17 mm (10/12”)

23.28 mm (11/12”)

25.40 mm (12/12”)

27.52 mm (13/12”)

User Top of Form

-14 ~ -1

+1 ~ +14

Centering Position Select to limit printhead

Extension Detect Sprocket

Hole

Right Margin (Fanfold)

Right Margin (Cut Sheet)

travel when printing narrow columns. Select Mode1 for ML5720.

Select Mode 1 or Mode 2 for ML5721.

Select Enable when loading continuous form to detect sprocket hole, and avoid printing on the hole.

Select to set the blank space (width) on the right side of the continuous form.

Select to set the blank space (width) on the right side of the cutsheet paper.

Default

Mode 1 Mode 2

Enable

Disable

Right Margin Over 1 mm 3 mm

5.08 mm

10 mm

13 mm 15 mm 20 mm 25 mm

Right Margin

1 mm

2 mm 3 mm 4 mm 5 mm 6 mm

Operator interface > 52

ELF TEST PRINTING

1. Start:

(a) Press and hold down the SEL + LF/FF buttons and turn on the power to enter

the Maintenance menu mode.

(b) Press and hold down the LF/FF button and press the LOAD/EJECT button.

2. Stop: The printer will stop after printing a test pattern.

3. Print Pattern: (a) Header:

aaaaa bbb C F/W dd.ee

LD hh.ii

ffffffffYR-gg

as defined by:

POSITION & CHAR.

DESCRIPTION DATA

PRINTED

COMMENTS

COUNT

aaaaa Model name ML57xx

ML57xx

bbb Compatibility MEI ML/EPSON/IBM

CUserOELUser dd.ee Revision no. 00.00 - 99.99 Firmware

ffffffff Part Number 44203201YR

(ML572x) 44203101YR

(ML579x)

gg Part Number 01-99 ROM-FD

hh.ii Revision no. 00.00-99.99 Flash Loader

Narrow chassis Wide chassis

compatible

revision YR number

number

revision

(b) The test pattern is a consecutive printing of ASCII characters 20H to 7EH in all

print quality and pitch combinations

NUMBER OF CHARACTERS PRINTED PER LINE

CPI NARROW WIDE

5 (ML572x only) 40 40 10 80 80 12 96 96 15 (ML579x only) 120 120

17.1 137 137 20 (ML579x) 160 160

Operator interface > 53

OLLING

ASCII

SELF TEST PRINTING

1. Start:

(a) Press and hold down the SEL + LF/FF buttons and turn on the printer to enter

the maintenance mode.

(b) Press and hold down the LF/FF button and press the SEL button.

2. Stop: Stop the test by switching off the printer power.

3. Print pattern: (a) Header:

aaaaa bbb C F/W dd.ee

LD hh. ii

ffffffffYR-gg

as defined by:

POSITION & CHAR. COUNT

aaaaa Model name ML57xx Narrow chassis

bbb Compatibility MEI ML/EPSON/IBM

CUserOELUser dd.ee Revision Number 00.00-99.99 Firmware

ffffffff Part Number 44203201YR

gg Part Number 01–99 ROM-FD

hh.ii Revision no. 00.00-99.99 Flash Loader

DESCRIPTION DATA

PRINTED

(ML572x) 44203101YR

(ML579x)

COMMENTS

Wide chassis

compatible

revision YR Number

Number

revision

4. Test pattern: Printing features/modes = Current Menu value. Pattern will continuously print all ASCII characters (20H to 7EH). Number of characters printed per line:

CPI NARROW WIDE REMARKS

(SEE NOTE)

10 80 136 (80) 12 80 136 (80)

17.1 80 136 (80) 20 80 136 (80)

NOTE When page width is set at 8 inches.

Operator interface > 54

EXADECIMAL DUMP MODE

VERVIEW

Normally a printer prints character patterns that correspond with the input character code. The printer does not print function codes or invalid codes. If the printer does not operate normally, the data sent from the host computer must be checked to determine if the commands are correct.

In this mode the printer converts input data into hexadecimal data and prints all the input data, making it is easy to check all the codes sent from the host computer to the printer.

PERATION

1. Entering Hexadecimal Dump mode:

Press and hold down the SEL + LF/FF buttons and switch ON the printer to enter the maintenance mode.

Press and hold down the SEL button and press the LOAD/EJECT button.

2. Exiting Hexadecimal Dump mode: To exit switch OFF the printer power.

3. Print pattern: Hex Data Dump

Address Hex equivalent of received data ASCII equivalent

Hex Data Dump < LF>

XXXX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX XX ............ .............

. .

etc.

NOTE All ASCII control codes are printed as a period “.”.

4. ASCII equivalent of incoming data:

00H - 1FH = ASCII “period” 20H - 7EH = normal ASCII equivalent 7FH = ASCII “period” 80H - 9FH = ASCII “period” 80H - 9FH = normal ASCII equivalent AOH - FEH FFH = ASCII “period”

= ASCII “period”

Operator interface > 55

UNCTION

> Prints in 10 CPI Draft mode. > This function operates with Para llel, USB and Optional Network and RS-232 C Serial

interfaces.

> When using Cut-sheet paper, one inch from the bottom of the paper will not be

printed. Hex-dump print action is initiated when more than 16 bytes of data is received (one full line). If data received is less than 16 bytes, printing will start automatically after a time out condition (approx. 2 seconds) is detected.

> Hex-dump printing is bi-directional.

UTOMATIC PAPER LOADING

Automatic paper loading is available for both Cut-sheet and continuous paper. To load paper automatically:

1. Remove cut sheet paper by pressing LOAD/EJECT button or remove continuous form by using the Auto-Park feature, see “Auto-parking” on page 57.

2. Set the Paper Type lever to the desired paper feed.

3. To load paper:

(a) Insert cut sheet paper using paper guides or set the continuous paper on the

push tractor.

(b) To load

Insert the cut sheet at TOF (Top of Form) feed position, the cut sheet is automatically loaded.or...

Press LOAD/EJECT to load continuous form

buttons. For continuous forms, press the TEAR button to move the form down, and then

press: LOAD/EJECT + LF/FF = Reverse line feed LOAD/EJECT + SEL = Forward line feed

NOTE

> For ML5720/ML5721: Line feeds are at 1/144”. > For ML5790/ML5791: Line feeds are at 1/180”. > Automatic paper loading function is not possible when the paper is set at

Pull (bottom feed) position.

Operator interface > 56

UTO-PARKING

The auto-park feature allows continuous form paper to be retracted from the printing position to allow printing on cut-sheet paper, without removing the continuous paper from the printer.

To auto-park continuous form:

1. Tear the continuous form paper at the tear bar.

2. Press the LOAD/EJECT button and the

> Printer goes offline. > Continuous form is automatically retracted. > Alarm LED is On indicating no paper is loaded in the printer.

3. To load cut-sheet or continuous form paper refer to “Automatic paper loading” on

page 56.

ORM TEAR-OFF

UNCTION

Form tear-off allows the user to tear the continuous forms paper at a desired cut position by advancing the paper to the cutting edge of the front access cover.

SET-

1. Conditions:

(a) Continuous forms paper is loaded into the push tractor feed.

2. Tear Position: (a) Load continuous forms paper.

Press the TEAR button to move the paper up to tear position.

(b) Adjust to the desired tear position using fine LFs:

TEAR + LF/FF = Reverse fine Line Feed TEAR + SEL = Forward fine Line Feed.

NOTE ML5720/ML5721: Line feeds are at 1/144”

ML5790/ML5791: Line feeds are at 1/180”

CTION

(a) The paper will advance to the tear-off position approximately 500ms/1sec/2sec

after printing.

(b) When data is received by the printer or the SEL button is pressed to select the

printer, the paper will retract to the user-defined printing position.

Operator interface > 57

RINT POSITION

When the printer is Online, pressing the LOAD/EJECT button along with SEL or LF/FF button will set the first line of print or the print position.

Set the desired first line of print by pressing:

LOAD/EJECT + LF/FF = Reverse print position adjustment LOAD/EJECT + SEL = Forward print position adjustment

NOTE ML5720/ML5721: Print position adjustments are at 1/144”

ML5790/ML5791: Print position adjustments are at 1/180”

UIET PRINTING

Select Quiet mode by pressing the PRINT SPEED button. This printer series supports two types of Quiet mode:

MENU ITEM

Quiet Mode

IGH-COPY PRINTING

SET PRINTER

SIZE

Mode 1 ML5720 30%

ML5721 30%

ML5790/ ML5791

Mode2 ML5720/

ML5721/ ML5790/

ML5791

PRINT SPEED

down

down 50%

down 30%

down 50%

down

PRINT PASS

1 pass 50ms

1 pass 100ms

2 pass 250ms

2 pass 50ms

2 pass 250ms

WAIT TIME

Select High-copy mode by pressing the PRINT SPEED button. This printer series supports four types of High-copy mode:

MENU ITEM

High-copy Mode

SET PRINTER

PRINT SPEED PRINT PASS

METHOD

ML5720/ML5721 ML5790/ML5791

Mode 1 Double - strike print 50% down 100% down 1 pass 2 pass Mode 2 Triple - strike print 50% down 100% down 2 pass 3 pass Mode 3 Four - strike print 50% down 100% down 2 pass 4 pass Mode 4 Fifth - strike print 50% down 100% down 3 pass 5 pass

Operator interface > 58

OMMAND DESCRIPTIONS

ML5720/ML5721

For a summary of the commands available see “Appendix A – Command summary” on

page 295.

ORIZONTAL CONTROL

Carriage return—Execute

> Code: CR > Compatibility: EPS FX/IBM III/ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change and set the next printable data’s print position to the left margin.

> Additional details:

If Auto-LF is activated, a CR will also cause a LF to ex ecute. This action will take place if there is, or if there is not data in the print buffer.

The text feature, “Double Wide (expanded)—one line only”, designated by SO and ESC SO (Epson mode only) will be reset since the “CR” terminates the current print line.

Backspace

> Code: BS > Compatibility: EPS FX/IBM lll > Function:

Print the data in the print buffer and move the printhead one current character width to the left.

> Additional details:

Size (distance) of the BS are as follows: BS + DBL-Width -> double wid t h BS

BS + char. pitch -> BS the amount of the current char. pitch BS + Inter-char clearance -> BS normal char width + clearance BS + Proportional -> causes the print head to backspace a 10 CPI character width.

When BS is executed, if a multipass character (e.g. double height characters) is in the print buffer, then the paper is reverse fed to the original printing position of the multipass character, and the character is printed. (Accurate printing is however not assured).

Once the current print position has reached the left margin, BS will be ignored. (Epson)

The print head backspaces to the left margin position. (IBM) BS + right, center, full justification -> BS is ignored.

Command descriptions > 59

Backspace

> Code: BS > Compatibility: ML > Function:

Move the printhead one current matrix cell width (character cell and Inter-character clearance columns) to the left.

> Additional details

If no “printable” data (including “space) has been previously received by the printer, the BS is ignored.

If there is character data on a line formed by 12 vertical dots, such as Line Graphics, and a BS command is executed, the printer performs a line feed to the printing position of the next data block and prints.

The left margin is the limit to the positioning of the printhead when multiple BS commands are executed. Any subsequent BS commands, processed after this limit is reached, are ignored.

Regardless of any CPI change in the middle of the print line, the distance that the printhead moves backward is the same as the width of the matrix cell (which inc ludes Inter-character clearance columns) of the CPI that was active previous to the processing of the BS command.

Backspace does not initiate printing action (block change); it is executed when character data or a “initiate printing action” command is received.

BS + DBL-Width -> double wid t h BS BS + Inter-char clearance -> BS normal char width + clearance

BS + Proportional -> Current CPI character width without proportional.

Delete

> Code: DEL > Compatibility: EPS FX > Function:

Delete the last printable character data in the print buffer.

> Additional details:

If the data to be deleted is a SP code, (20) H or (32) D, one SP code is deleted by this command.

If the data to be deleted is in bit image graphics, this command is ignored. H-TABs are not deleted.

Command descriptions > 60

Print direction—select unibidirectional prin t

> Code: ESC U n > Compatibility: EPS FX/IBM lll > Function:

Choose between left-to-right (Uni-directional) printing which achieves improved inter-line print registration, or Bi-directional printing which achieves faster throughput.

> Range:

UNI-DIRECTIONAL BI-DIRECTIONAL

Epson 01H, 31H, 81H or B1H 00H, 30H, 80H or B0H IBM Odd numbers Even numbers

> Out of Range:

This command will be ignored if n equals any other values except for the values mentioned above.

> Additional details:

Short-line-seeking is performed in both Uni-directional and Bi-directional print modes.

When the first thermal threshold of the printhead is sensed, the printer automatically enters Uni-directional printing mode.

Print direction—uni-direction al p rint—one line only

> Code: ESC < > Compatibility: EPS FX > Function:

For one print line only, choose left-to-right (Uni-directional ) p rinting for improved inter-line print registration.

> Additional details:

Subsequent lines will be printed bi-directionally, according to short line logic seeking priorities.

Print Direction—uni-directional

> Code: ESC— > Compatibility: ML > Function:

Print while moving the carriage from left to right only; used to improve dot alignment between print lines.

> Additional details:

Uni-directional short-line -s eeking is performed.

Command descriptions > 61

Print direction—bi-direction al

> Code: ESC = > Compatibility: ML > Function:

Cancel Uni-directional print and return to Bi-directional print for quicker throughput.

> Additional details:

Bi-directional printing is the power-up default and the normal mod e of printing.

Print position—execute pr int position from left margin

> Code: ESC $ n1 n2 > Compatibility: EPS FX > Function:

Initiate printing action by starting to print at the position specified from the left margin.

> Range:

n1 is a decimal number value 0 – 255. n2 is a decimal number value 0 – 255.

> Out of range:

Any position specified beyond the right margin is ignored.

> Additional details:

Dot position = (n1 + n2*256)/60 to the right of the left margin. The position specified as n1 = n2 = 0 is the left margin. Physical Upper Limit... Wide chassis(ML5721) ... (n1 + n2*256)/60" <= 13.6 (inches)

Narrow chassis(ML5720) ... (n1 + n2*256)/60" <= 8.0 (inches) Logical Upper Limit ... Absolute Position <= Right Margin No underlines are made in the print line area skipped by the positioning.

Print position—define print position from home position

> Code: ESC % B n1 n2 n3 n4 > Compatibility: IBM III/ML > Function:

Set the next printing position, by dot columns, absolute to the home position. n1 is a decimal number value 48 – 57 (ASCII 0 – 9)

n2 is a decimal number value 48 – 57 (ASCII 0 – 9) n3 is a decimal number value 48 – 57 (ASCII 0 – 9) n4 is a decimal number value 48 – 57 (ASCII 0 – 9) 0000 n1 n2 n3 n4 Right margin.

Command descriptions > 62

CPI ML5720 ML5721

10 961 1633 12 1153 1959 15 1441 2449

17.1 1646 2798 20 1921 3264

> Additional details:

n1 – n4 is a 4 digit ASCII number; leading zeros must be entered even if the number is less than 1000. Example: 250 -> 0250

This command will be ignored if print position set by this command exceeds the right margin or left margin.

No underlines are made in the print line area skipped by the positioning.

Print position—define r ight relative position

> Code: ESC% E n1 n2 n3 n4 > Compatibility: ML > Function:

Moves the next print position by a number of dot columns (specified by n1n2n3n4) to the right from the current print position.

> Variable range:

ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30H - 39H n2 0 - 9 48 - 57 30H - 39H n3 0 - 9 48 - 57 30H - 39H n4 0 - 9 48 - 57 30H - 39H

> Out of range:

If the code for n1n2n3n4 is other than the above, this command is ignored.

> Logical limitation:

The printer ignores this command if the command attempts to set a print position exceeding the right margin.

> Additional details:

The number n1n2n3n4 is a 4-digit decimal number. Since all digits must be defined, any number that does not use all digits must be preceded with leading zeros. e.g.: 25 -> 0025

If n1n2n3n4 = 0000 is specified, this command is ignored and the printer maintains the current print position.

No underlines are printed in the print line areas skipped by this command.

Command descriptions > 63

Print position—define left relative position

> Code: ESC % F n1 n2 n3 n4 > Compatibility: ML > Function:

Moves the next print position by a number of dot columns (specified by n1n2n3n4) to the left from the current print position.

> Variable range:

ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30H - 39H n2 0 - 9 48 - 57 30H - 39H n3 0 - 9 48 - 57 30H - 39H n4 0 - 9 48 - 57 30H - 39H

> Out of range:

If the code for n1n2n3n4 is other than the above, this command is ignored.

> Logical limitation:

The printer ignores this command if the command attempts to set a print position exceeding the left margin.

> Additional details:

Number n1n2n3n4 is a 4-digit decimal number. Since all digits must be defined, any number that does not use all digits must be preceded with leading zeros. e.g.: 25 -> 0025

If n1n2n3n4 = 0000 is specified, this command is ignored and the printer maintains the current print position.

No underlines are printed in the print line areas skipped by this command. When the printer receives a valid n1n2n3n4 number, it prints out the data stored in

the printer buffer.

Print position—define indexed position—by dot column

> Code: ESC \ n1 n2 > Compatibility: EPS FX > Function:

Set the next printing position, by dot columns, indexed from current print position.

> Range:

n1 and n2 specify a signed 16 bit binary number of dot columns to move; the lower byte is n1, and the upper byte is n2.

Range n1 and n2 = 0 – 255

> Logical limitation:

Value defined beyond the left or right margins are ignored.

> Additional details:

The new print position is indexed from the current printing position and may be either to the left or the right of the current position.

Command descriptions > 64

Positive values move the print position to the right and negative values move it to the left.

Do position = n1 + n2*256 Values are shown as follows: ML5720 — FCH, 40H n2, n1 03H, COH

ML5721 — F9H, A0H n2, n1 06H, 60H Underlined printing is enabled only when the print head moves to the right. A position defined to the left of the current position initiates printing action by causing

a block change. The amount of print position can not be deleted by the DEL command.

Print position—define r ela tiv e dot position

> Code: ESC | n1 n2 > Compatibility: IBM III > Function:

Moves the current logical horizontal print position by n/120 in from the current print position.

> Range:

The number n1 is the low byte and n2 is the high byte in the dot position setting code. The number n1n2 is a decimal number between 0 and 255 (if n1 = n2 = 0 is specified,

the printer maintains the current position). Limit FC40H n1 + n2×256 03C0H (ML5720)

F9A0H n1 + n2×256 0660H (ML5721)

> Out of range:

The printer ignores this command if the command attempts to set a print position exceeding the left/right margin.

> Additional details:

Scores can be added only when th e print head moves to the right from the current print position.

When the print head moves to the left from the current print position, the printer prints out the data stored in the printer buffer.

Horizontal tabs — define stops — by characters

> Code: ESC D × 1, ×2, ×3 ... xk NUL > Compatibility: EPS FX/IBM III > Function:

Set, by character columns, up to a maximum of 32 tab (Epson) or 28 tab (IBM) positions.

Command descriptions > 65

> Range:

Range k = 1 – 32 (Epson) = 1 – 28 (IBM)

Range x = 1 – 255 (Epson) = 1 – 255 (IBM)

CPI EPSON IBM

ML5720 ML5721 ML5720 ML5721

10 79 135 80 136 12 95 163 96 164 15 119 203 120 204

17.1 137 233 138 234 20 159 255 160 255

> Out of range:

If k>32 (Epson) or k>28 (IBM) the following value of x will be ignored. Maximum x value in each CPI, values larger than maximum are ignored.

> Additional details:

Tabs are set at every 8 character after powering up the printer, receiving an I PRIME (INIT) signal or executing an ESC @ (Epson), ESC R (IBM III), ESC } NUL and ESC { n.

The entire command string is terminated with a NUL [CHR$(0)] or a number less than the last tab setting specified. (Epson)

The tab settings n1, n2, n3 nk must be entered in ascending order. Tabs are absolute position. However, if the left margin is changed, HT position is

changed according to the left margin. (IBM) If n = 0, clear all tabs set. If there is not a nul at the 33rd (Epson) This command is disregarded while nk-1 = nk or the printer encounters a null

character. A maximum of 32 tab stops can be set. If there is no null character at the 29th value of n, this command is disregarded until the printer encounters a null character. Tab positions set up to the 28th n value are enabled. (IBM)

Example: If ESC D n1 n2 n4 n3 NUL,

n1 < n2 < n3 < n4 -> valid n1 – n4. n1 < n2 = n3 < n4 -> valid n1 – n2 (Epson) Valid n1, n2, n4 (IBM)

Command descriptions > 66

Horizontal tab—execute

> Code: HT > Compatibility: EPS FX/IBM III > Function:

Advance from the current print position to the next Horizontal Tab position.

> Additional details:

Tab positions are based on the character pitch in force at the time the horizontal tab is set (IBM)

Tab position is absolute. If the character pitch is changed, including double width, the tabs will remain in the same absolute locations. (Epson)

Upon power up the default tabs are set at columns 9, 17, 25, 33 ... and every eight spaces after that.

HT will become invalid when it exceeds right margin setting. If an HT is executed past the right margin, it will cause the next character to be printed immediately after the last. All subsequent HTs will correspond to the beginning of the TAB setting sequenc e.

No underline are printed in th e “s kip” area.

Horizontal tabs—def in e stops—default values

> Code: ESC R > Compatibility: IBM III > Function:

This command sets horizontal tabs at every 8th position starting at column 9 and clears all vertical tabs.

Horizontal tabs—define stops—by characters

> Code: ESC, HT X1 Y1 Z1, ... , Xm Ym Zm CR > Compatibility: ML > Function:

Clear all previously defined H-tabs and define up to 16 new horizontal tab stop positions from the left-most physical print position in units of character columns.

> Range:

Variables

ASCII DECIMAL HEXADECIMAL

X1 0 - 9 48 - 57 30 - 39 Y1 0 - 9 48 - 57 30 - 39 Z1 0 - 9 48 - 57 30 - 39

m (number of tabs) = 0 - 16

Command descriptions > 67

Argument “X1Y1Z1”

CPI ML5720 ML5721

10 80 136 12 96 163

17.1 137 233 20 160 272

> Out of range:

The command will be ignored.

> Logical limitations:

XmYmZm represents a 3 digit number where each consecutive XmYmZm number must be greater than the previous one or else Xm Ym Zm is ignored.

X1 Y1 Z1 < X2 Y2 Z2 < ... < Xmax Ymax Zmax

> Additional details:

Maximum of 16 HT stops maybe defined. Horizontal tab settings can be cleared by: — ESC HT CR (defining no tabs)

— ESC HT 000 CR (defining no tabs) — ESC HT 001 CR (defining no tabs)

NOTE Tab position “0” and tab position “1” both represent the first column position on the print line.

X1 Y1 Z1 is a 3-digit ASCII numeric. A 2-digit or 1-digit X1Y1Z1 number can be specified, however, by separating it from the subsequent parameters with a comma.

Upon Power-up and reset conditions, such as l-Prime, the default tabs are set at character columns 9, 17, 25, 33 ... and every eight character columns after that.

Horizontal Tab positions are relative to the character pitch. While in 10 cpi, a H-tab of 10 characters will represent a physical distance of 1 (10/10th) inch. This same 10 character H-tab in 12 cpi will represent a physical distance of 11/12th of an inch.

Horizontal tabs – define stops – by dot column

> Code: ESC ETX X1 Y1 Z1 W1, ... , Xm Ym Zm Wm CR > Compatibility: ML > Function:

Clear all previously defined H-tabs and define up to 16 new horizontal tab stop positions from the left-most physical print position in units of dot columns.

Command descriptions > 68

> Range:

Variables

m (number of tabs) = 0 - 16 Argument “X1Y1Z1W1”

> Out of range:

ASCII DECIMAL HEXADECIMAL

X1 0 - 9 48 - 57 30 - 39 Y1 0 - 9 48 - 57 30 - 39 Z1 0 - 9 48 - 57 30 - 39 W1 0 - 9 48 - 57 30 - 39

CPI ML5720 ML5721

10 960 1632 12 1152 1956

17.1 1644 2796 20 1920 3264

The command will be ignored.

> Logical limitations:

XmYmZmWm represents a 4 digit number where each consecutive XmYmZmWm number must be greater than the previous one or else Xm Ym Zm Wm is ignored.

> Additional details:

Maximum of 16 HT stops may be defined. Each tab must be defined in ascending order. Horizontal tab setting can be cleared by: — ESC ETX CR (defining no tabs) — ESC ETX 0000 CR (defining no tabs) — ESC ETX 0001 CR (defining no tabs)

NOTE Tab position “0” and tab position “1” both represented the first column position on the print line.

X1 Y1 Z1 W1 is a 4 digit ASCII numeric. X1Y1Z1W1 should be a 4-digit ASCII number. An X1Y1Z1W1 number of 3-digits or

less can be specified, however, by separating it from the subsequent parameters with a comma.

Upon Power-up and reset conditions, such as l-Prime, the default tabs are set at columns 97, 193, 289 ... and every 96 dot columns after that.

Command descriptions > 69

Horizontal Tab positions are relative to the character pitch. While in 10 cpi, a H-tab of 120 columns will represent a physical distance of 1 inch. This same 120 columns H-tab in 12 cpi will represent a physical distance of 120/144th of an inch.

H-TABS by dot column are valid when combined with Bit Image Graphics and Proportional Width Characters.

Horizontal tab—execute

> Code: HT > Compatibility: ML > Function:

Advance from the current print position to the next Horizontal Tab position.

> Logical limitations:

An HT can not be executed beyond the right margin.

> Additional details:

HT execution will cause an advance to the next tab stop position defined by the “HTAB by characters” or “H-TAB by columns” definition commands; which ever HT command was most recently defined.

When character pitch is changed, tab position will be recalculated based on the new pitch.

HT will become invalid when it exceeds right margin setting. If an HT is attempted past the right margin, it will cause the next character to be printed immediately after the last. All subsequent HT’s will correspond to the beginning of the TAB setting sequence.

If the Underline print feature is “on”, the area of the page that the HT skips over will not be underlined.

Margins—define left ma rg in

> Code: ESC n > Compatibility: EPS FX > Function:

Left margin is set at (n) characters from the left-most physical print position.

> Range:

Range n = 0 - 255

NAME PITCH ML5720 ML5721

PICA/ PROPORTIONAL

ELITE 12 1 - 94 1 - 162

10 1 - 79 1 - 134

15 1 - 118 1 - 202 COMPRESSED 17.1 1 - 135 1 - 231 COMPRESSED

ELITE

20 1 - 157 1 - 255

Command descriptions > 70

> Out of range:

If n exceeds the right margin, the left margin command will be ignored.

> Additional details:

Left margin positions are based on the character pitch which is in force at the time the left margin is set. Left Margin’s position is absolute. If the character pitch is changed, the margin will NOT move to accommodate the change.

While in proportional mode, the print column width of the margin will be set in pica character size.

The left margin will remain at value set unless reset by some software code or the printer is turned off.

Input of the ESC/ code with a valid left margin parameter causes the horizontal TAB positions previously set to be cleared, and the subsequent horizontal TAB will default to every 8 character positions starting with the new left margin as position 0.

There must be a difference of at least 25 characters between the left margin and right margin values for 10 CPI.

Margins—define right margin

> Code: ESC Q n > Compatibility: EPS FX > Function:

Right margin is set at (n) characters from the left-most physical print position.

> Range:

Range n = 1 -255

NAME PITCH ML5720 ML5721

PICA/ PROPORTIONAL

ELITE 12 3 - 96 3 - 164

COMPRESSED 17.1 4 - 138 4 - 234 COMPRESSED

ELITE

10 2 - 80 2 - 136

15 3 - 120 3 - 204

20 4 - 160 4 - 255

> Out of range:

The number “n” must be within the ranges given above, otherwise it will be ignored. If n = 0, or is less than or equal to the left margin this command is ignored.

> Additional details:

Right margin positions are based on the character pitch which is in force at the time the right margin is set.

Right Margin’s position is absolute. If the character pitch is changed, the margin will NOT move to accommodate the change.

While in proportional mode, the print column width of the margin will be set in pica character size.

Command descriptions > 71

Setting Right margin clears the print buffer. There must be a difference of at least 25 characters between the left margin and right

margin values for 10 CPI. If you attempt to print a character beyond the right margin the character will be

printed on the next line after a line feed and carriage return are executed.

Margins—define left & rig h t margin

> Code: ESC X n1 n2 > Compatibility: IBM III > Function:

Set the Left Margin to (n1) characters and Right Margin to (n2) characters from the left-most physical print position.

> Range:

The ranges for n1 and n2 are: 1 <= n1 <= 255 2 <= n2 <= 255 n1 < n2

> Out of range:

If n1 or n2 = 0 then the current margin setting is used. If n2 exceeds the default range n2 shall be converted to the default value.

CPI ML5720 ML5721

10 80 136 12 96 164 15 120 204

17.1 138 234 20 160 255

> Additional details:

The default value of the left margin is the 1st character. The margin’s positions are absolute. If the character pitch is changed, the margins

will NOT move to accommodate the change. Character pitch changes afterwards do not affect the distance from the home

position. n1 n2 indicates the left and right edges of printable area. For example if n1 = 10, n2

= 100, a printable area is from the 10th column to the 100th column: 91 characters are printable.

Print- line justification—select

> Code: ESC a n > Compatibility: EPS FX > Function:

The text position/alignment will be set according to one of the four given modes assigned by n. (n is Binary value)

Command descriptions > 72

> Range:

N JUSTIFICATION

0Left 1Center 2Right 3Full

> Additional details:

n = 0 Left justification is the default or standard format, in which the left margin is even and the right margin is not.

n = 1 The centering command centers a line of text between the margins. This command is used for headings, titles and captions.

n = 2 Right justification is the opposite of left justification. The right margin is even and the left is not.

n =3 Full justification puts extra spaces where necessary so that both the left and right margins are aligned.

Full justification (n = 3) is performed when the printer receives (when printing starts) data exceeding 75% of the maximum number of characters to be printed in a line.

Print position will be affected by the commands which set the left/right margin. This command causes a print block change. If there is data in the print buffer and this

command is sent, the data will be printed before the justification takes affect.

Margins—define left ma rg in

> Code: ESC % C n1 n2 n3 > Compatibility: ML > Function:

Define the logical left-most printing position limitation from the left most-physical print position in units of 1/120 inch.

> Range:

Variable

ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39 n2 0 - 9 48 - 57 30 - 39 n3 0 - 9 48 - 57 30 - 39

Argument “n1n2n3” Narrow chassis 000-900 × 1/120 inches (approx. 7.5 inches max.)

Wide chassis 000-999 × 1/120 inches (approx. 8.3 inches max.)

> Out of range:

If any digit is out of range, the command is ignored.

> Logical limitation:

If n1n2n3 exceeds the maximum value, the command will also be ignored.

Command descriptions > 73

Set number difference between right margin and left margin must be a minimum of 60, otherwise the command will be ignored.

> Additional details:

n1n2n3 is a 3 digit ASCll number. Since all digits must be defined, any number that does not use all digits must be padded with leading zeros. e.g.: 8 -> 008.

When n1n2n3 = 000, the command will be ignored. When n1n2n3 = 001, the left margin will be cleared. If the left margin is defined after one or more characters have been sent to the

current print line, the left margin will not become val id for the current print line, but will be valid on the next print line.

Margins—right margin

> Code: ESC % R n1 n2 n3 n4 > Compatibility: ML > Function:

Define the logical right-most printing position limitation from the left most-physical print position in units of 1/120 inch.

> Range:

Variable

ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39 n2 0 - 9 48 - 57 30 - 39 n3 0 - 9 48 - 57 30 - 39 n4 0 - 9 48 - 57 30 - 39

Argument

ML5720 ML5721

Without Left Margin

With Left Margin

60 < RM <= 960 60 < RM <= 1632

LM + 60 <= RM <= 960 LM + 60 <= RM <= 1632

> Out of range:

If any variable is out of range, the command is ignored and any subsequent variabl es are interpreted as normal data.

> Logical limitation:

The Right Margin can not be defined within 60/120 inch (1/2 inch) from the Left Margin or can not be defined to the left of the Left Margin. If this is attempted the command will be ignored.

Command descriptions > 74

> Additional details:

n1n2n3n4 is a 4 digit ASCII number. Since all digits must be defined, any number that does not use all digits must be padded with leading zeros. EXAMPLE: 8 -> 0008.

When n1n2n3n3 = 0000, the Right Margin will be set to the default value. Explanation of illegal variable results (n2 = out of range): ESC % R n1 n2 n3 n4

n3 and n4 interpreted as normal data command is aborted.

If the right margin is defined after one or more characters have been sent to the current print line, the right margin will not become valid for t he current print line, but will be valid on the next print line.

Relative move inline forward

> Code: ESC d Ln Hn > Compatibility: IBM III > Function:

Moves the print position n/120" to the right from the current printhead position.

> Range:

Specify dot position following n1 and n2. n1 and n2 range = 0 – 255 Limit 0 = n1 + (n2*255) <= 1632

> Out of range:

Values beyond the right margin will be ignored.

> Additional details:

If score is set any horizontal positioning is scored.

Command descriptions > 75

ERTICAL CONTROL

Line spacing—select fixed amount—1/6 in ch

> Code: ESC 2 > Compatibility: EPS FX > Function:

Set the line spacing to 1/6 inch units.

> Additional details:

This command will remain in effect until a new line spacing command is sent to the printer.

This command does not set the Top of Form position. LF, VT, or CR (if Auto F is on) execute in units of 1/6 inch when this function is active.

> Related functions:

LF, VT, CR (and Auto LF)

6 LPI (Lines per inch):

1/6 inch (24/144 inch)

Line spacing—select fixed amount—1/6 in ch

> Code: ESC 6 > Compatibility: ML > Function:

Set the line spacing to 1/6 inch units (6 LPI).

> Additional details:

This command remains in effect until a new line spacing command is sent to the printer.

This command does not set the top of form position. LF, VT, or CR (if Auto LF is on) execute in units of 1/6 inch when this function is active.

Command descriptions > 76

> Related functions:

LF, VT, CR (and Auto LF)

6 LPI (Lines per Inch):

Line spacing—select fixed amount—1/8 in ch

> Code: ESC 0

1/6 inch (24/144 inch)

> Compatibility: EPS FX/IBM III > Function: Set the line spacing 1/8 inch units. > Additional details:

This command remains in effect until a new line spacing command is sent to the printer.

This command does not set the top of form position. LF, VT, or CR (if Auto LF is on) execute in units of 1/8 inch when this function is active.

> Related functions:

LF, VT, CR (and Auto LF)

8 LPI (Lines per Inch):

1/8 inch (18/144 inch)

Command descriptions > 77

Line spacing—select fixed amount—1/8 in ch

> Code: ESC 8 > Compatibility: ML > Function: > Set the line spacing to 1/8 inch units (8 LPI). > Additional details:

This command remains in effect until a new line spacing command is sent to the printer.

This command does not set the Top of Form position. LF, VT, or CR (if Auto LF is on) execute in units of 1/8 when this function is active.

> Related function

LF, VT, CR (and Auto LF)

8 LPI (Lines per Inch):

1/8 inch (18/144 inch)

Line spacing—select fixed amount—7/72 inch

> Code: ESC 1 > Compatibility: EPS FX/IBM III > Function:

Set the line spacing to 7/72 inch units.

> Additional details:

This command remains in effect until a new line spacing command is sent to the printer.

This command does not set the Top of Form position. LF, VT or CR (if Auto LF is on) execute in units of 7/72 inch when this function is

active.

> Related functions:

LF, VT, CR (and Auto LF)

Command descriptions > 78

Line spacing—define amount—n/72 inch

> Code: ESC A n > Compatibility: IBM III > Function:

Stores the line feed amount in 1/72-inch units.

> Range:

Range n = 0 – 255

> Out of range:

Not applicable—cannot receive value larger than 255 (FFH).

> Additional details:

If n = 0, the line feed amount is 0 and subsequent print-line wil l overprint on the same print-line.

This command does not set the top of form position. The ESC 2 command sets the line feed amount stored by this command.

Line spacing—define amount—n/72 inch

> Code: ESC A n > Compatibility: EPS FX > Function:

Sets the line spacing to n/72 inc h.

> Range: Range n= 0 to 85, n = 128 to 213 (Bit 7 of the n code is invalid.) > Out of range:

Value of n not within the allowable range will be ignored.

> Additional details:

If n = 0, the line feed amount is 0 and subsequent print-lines will overprint on the same print-line.

This command does not set the Top of Form position. Power-on default or the I-Prime signal resets the LF unit to the current MENU value.

Line spacing—define amount—n/216 inch

> Code: ESC 3 n > Compatibility: EPS FX/IBM III > Function:

Sets line spacing to n/216 inch.

> Range:

Range n = 0 – 255 (Epson), n = 1 – 255 (IBM)

> Additional details:

If n = 0, the line feed amount is 0 and subsequent characters will overprint on the same print-line. (Epson) If n = 0 is specified, this command will be invalid and the previously set line feed value remains effective. (IBM)

Command descriptions > 79

This command does not set the Top of Form position. Power on default or the I-Prime signal resets the LF unit to the current MENU value. LF, VT, or CR (if Auto LF is on) execute in units of n/72 inch when this function is

active.

> Related functions:

LF, CT, CR (and Auto LF)

Line spacing—activate amount d efin e d b y n /72 in ch

> Code: ESC 2 > Compatibility: IBM III > Function:

Activate the line feed amount defined by the ESC A “n” command.

> Additional details:

If no ESC A n sequence has been defined, the line spacing amount will be according to current MENU value.

> Related functions:

ESC A n

Line feed—execute amount—n/216 inch

> Code: ESC J n > Compatibility: EPS FX/IBM III > Function:

Execute a n/216 inch line feed without changing the current stored line spacing value.

> Range:

Range n = 0 – 255 (Epson); n = 1 – 255 (IBM)

> Additional details:

The printer prints the contents of the buffer without a carriage return. (Epson) Moves the current print position to the print start position of next line (left margin

position) when the “Auto CR” feature is set to “Yes” in ME NU m od e. (IBM) This command does not need a cancel code, since it is executed only once. No feed is performed when n = 0. (Epson) If n = 0 is specified, this command will be invalid. (IBM)

> Related functions:

This command does not clear the elongated character mode (double width printed character) selected by ESC SO or SO code.

Command descriptions > 80

Fine LF—execute—n/144 inch amount

> Code: ESC % 5 n > Compatibility: EPS FX/IBM III/ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change and execute a n/144 inch line feed, then a carriage return.

> Range:

DECIMAL HEXADECIMAL

n 0 - 255 00 - FF The eight bit (b7) is ignored so the effective range of n1 is

as follows ...

DECIMAL HEXADECIMAL N

0 - 127 00 - 7FH 0 - 127 128 - 255 80 - FFH

(0/144” - 127/ 144”)

> Out of range:

Not applicable, cannot receive a value larger than 255 (FF)H or smaller than 0.

> Details:

If n = 0 the line spacing will be set to a distance of zero, upon execution of a LF. If the line spacing is set to zero (n1 = 0), no paper feeding will occur when a LF is

executed, but any data in the print buffer will be printed (as when a CR is executed).

Line spacing—define amount—n/144 inch

> Code: ESC % 9 n > Compatibility: EPS FX/IBM III/ML > Function:

Set the line spacing to n/144 units.

> Range:

DECIMAL HEXADECIMAL

n 0 - 255 00 - FF The eight bit (b7) is ignored so the effective range of n1 is

as follows ...

DECIMAL HEXADECIMAL N

0 - 127 00 - 7FH 0 - 127 128 - 255 80 - FFH

(0/144” - 127/ 144”)

> Out of range:

Not applicable, cannot receive a value larger than 255 (FF)H or smaller than 0.

Command descriptions > 81

> Additional details:

If n = 0 the line spacing will be set to a distance zero, upon execution of a LF. If the line spacing is set to zero (n = 0), no paper feeding will occur when a LF is

executed, but any data in the print buffer will be printed (as when a CR is executed).

Line feed—execute forward LF with CR

> Code: LF > Compatibility: EPS FX/IBM III > Function:

Initiate printing action; print data in the print buffer by causing a print block change and execute a line feed, then a carriage return. Moves the current print position to the print start position of next line (left margin position) when the “Auto CR” feature is set to “Yes” in MENU mode. (IBM)

> Additional details:

Line spacing pitch will be set by ESC A n, ESC 0, ESC 2, ESC 3 n, ESC 1, ESC % 9 n. Otherwise, the LF pitch will be set by the current MENU when pow-er is on or I-Prime signal is received.

This code will cancel enlarged character mode set by the ESC SO (Epson mode only) and SO code before the LF code or only spaces before this code, only line feed is performed.

Line feed—execute reverse LF

> Code: ESC j n > Compatibility: EPS FX > Function:

Execute an immediate n/216 inch reverse line feed; which will be executed only once each time this command is sent.

> Range:

Range n = 0 – 255

> Additional details:

It is not recommended to use the pull tractor feed unit when reverse line feeds are required.

The current line spacing will not be changed.

Line feed—execute reverse LF—one line only

> Code: ESC ] > Compatibility: IBM III > Function:

Execute the current LF pitch, reverse line feed; which will be executed only once each time this command is sent.

> Additional details:

It is recommended to use the pull tractor feed unit when reverse line feeds are required.

The current line spacing will not be changed.

Command descriptions > 82

Line feed—execute forward LF with CR

> Code: LF > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change and execute a line feed, then a carriage return.

Additional details: This command is equivalent to the composite command (ESC.?.N:)

where n = (23) H The line spacing is set by ESC.6, ESC.8 or ESC.%.9.n command. The line s pacing will

be set to the default line pitch after a default sequence (power up, I-Prime, and CAN).

Line feed—execute reverse line feed

> Code: ESC LF > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change and execute a reverse line feed and then a carriage return for one line only.

> Additional details:

Composite command (ESC.?.n.:) for CR/LF will perform: n = (31)H Reverse Line Feed

When continuous paper or single sheets (fed by the SASF function) are used, unlimited number of reverse LFs may be executed.

When the CSF is attached to the printer the Reverse LF command will be valid for 1/3 inch (48/144 inch) in order to prevent paper jams.

Line feed—automatic LF—ON/OFF

> Code: ESC 5 n > Compatibility: IBM III > Function:

Enables/disables the automatic Line Feed. The printer performs an automatic LF each time it receives a carriage return (CR).

> Range:

n = 0 – 255 odd numbers = Automatic LF enabled even numbers = Automatic LF disabled

Line feed—W/O carriage return

> Code: ESC DC2 > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change, feed the paper the pre-defined line spacing amount, and set the next print able data’s print position to the last position of the previous line (no CR is performed).

Command descriptions > 83

Line feed—execute direct skip

> Code: ESC VT n1 n2 > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a block change, feed the paper the number of lines defined by this command, and set the next printable data’s print position to the left margin.

> Range:

N ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39 n2 0 - 9 48 - 57 30 - 39

> Out of range:

The command will be ignored.

> Additional details:

If n1 n2 = 00, no paper feeding is performed.

Form length—define amount—by in ch es

> Code: ESC C nul n > Compatibility: EPS FX/IBM III > Function:

Sets the form length to n inches

> Range:

Range n = 1 – 22 (Epson) 1 – 255 (IBM)

> Out of range:

n = 0 or n > 22 (Epson), previous setting is valid and this command is ignored.

> Additional details:

This command does not affect vertical tab settings. (IBM) This command will reset vertical tab settings to their default values. (Epson)

When this command is valid, it cancels the “Skip Over Perforation” feature even if the feature has been selected in the MENU mode.

Top of Form position is set by this command.

Form length—define amount—b y lin es

> Code: ESC C n > Compatibility: EPS FX/IBM III > Function:

Sets the form length to n lines length to n lines.

> Range:

Range n = 1 – 127 (Epson) 1 – 255 (IBM)

Command descriptions > 84

> Out of range:

If n = n > 127 (Epson), bit 7 is cleared and set that value as is.

> Additional details:

This command does not affect vertical tab settings. (IBM) This command will reset vertical tab settings to their default values. (Epson)

Top of form will be set. When this command is valid, it cancels the “Skip Over Perforation” feature even if the

feature has been set in the MENU mode. The amount of each line defined by this command, is equal to the current LF spacing

defined by ESC 0, ESC 2, ESC A n, ESC 3 n, ESC 1, ESC % 9n. If n = 0 or 128 (Epson), this command is treated as ESC C NUL n.

> Related functions:

ESC 0, ESC 2, ESC A n and ESC 3 n, ESC 1, ESC % 9 n.

Form length—define amount—by 1/2 inch

> Code: ESC G n1 n2 > Compatibility: ML > Function:

Define the logical form length by the amount of n1n2 × 1/2 inch and set the TOF position.

> Range:

Variables

N ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39 n2 0 - 9 48 - 57 30 - 39

Argument n1n2 range = 00 – 99

> Out of range:

The command will be ignored.

> Additional details:

If n1n2 = 00, the page length will default to the value defined by MENU. Maximum form length, 1/2 × 99 = 49.5 inches. Factory setting: 1/2 × 22 = 11 inches.

Form length—define amount—b y lin es

> Code: ESC F n1 n2 > Compatibility: ML > Function:

Define the logical form length by number of lines, and set the TOF position.

Command descriptions > 85

> Range:

Variables

N ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39 n2 0 - 9 48 - 57 30 - 39

Argument n1n2 range = 00 – 99

> Out of range: The command will be ignored. > Details:

If n1n2 = 00, the page length will default to the value defined by MENU. Maximum form length is based upon current LF spacing. If this spacing is set to 144/

144 inch (maximum value for line spacing), the maximum form length will be 99 × 1 inch = 99 inches.

If line spacing defined, by ESC % 9 n, is zero, this command will effectively be ignored.

ESC % 9 0 = 0 line spacing ESC F n1 n2 where n1 n2 = any value

Line Spacing Form Length 0 × (any value) = form length.

This command will set the Top of Form and the top of VFU. Factory setting: 11 inches

Form feed—execute

> Code: FF > Compatibility: EPS FX/IBM III > Function: > Prints the data in the print buffer followed by a carriage return, then feeds the paper

to the next TOF position.

> Additional details:

Factory setting of form length is eleven (11) inches. (MENU) Pressing FORM FEED button on the operator panel feeds the paper forward to the next

Top of Form position. A Form feed will be performed to the next top of form position even when the FF is

received at the top of form position. Double width by ESC SO (Epson mode only) and SO will be reset. Power up or I-Prime will set TOF.

Command descriptions > 86

Form feed—execute

> Code: FF > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a print block change, feed the paper the defined form length amount and set the next printable data’s print position to the left-margin.

> Additional details:

Paper length can be set by the ESC F n1 n2 or the ESC G n1 n2 commands. Upon power-up, or reception of a reset command, the page length will default to the

value set in MENU. Factory setting of Form Length is 11 inches.

Top of form—define

> Code: ESC 5 > Compatibility: ML > Function:

Define the top of the form (logical page) and the top of the VFU by logically “marking ” the current vertical print position.

> Additional details:

This command does not affect the CSF or SASF function.

Margins—define botto m margin (auto skip)

> Code: ESC % S n > Compatibility: ML > Function:

Define the size of the area at the bottom of the logical page which will automatically be skipped over by feeding the paper until the next TOF position.

> Range:

N ASCII DECIMAL HEXADECIMAL

n1 0 - 9 48 - 57 30 - 39

> Out of range:

The command will be ignored.

> Additional details:

If n = 0, the Auto-skip function is released. The distance that is skipped is twice the value of “n” multiplied by 1/6 inch (6 LPI).“n”

× 2 × 1/6 = Auto-skip distance. If Auto-skip (Skip Over Perforation) function is selected in Menu, the distance that will

be skipped is 1 inch. When in the Hex-Dump secondary mode, the Auto-skip function will operate

according to the MENU selection. Form length and TOF must be set before the Auto-skip area is defined.

Command descriptions > 87

Any printing operation which encroaches upon the bottom margin area, such as LF, Print Data + LF, Print Data + CR will cause the paper to be fed by skip over area length. On this next page, printing then will resume.

When the current line spacing is defined by ESC ( (8 LPI) or ESC % 9 n, (n/144 LPI) the auto skip function is performed when the remaining amount of the logical page is as follows...

VARIABLEN1INCHES

(N1 X 2 X 1/6)

EQUIVALENT NO. OF 6 LPIS

NO OF STEPS OF THE LF MOTOR

COMMENT

000 0 No skip 12/62 48 Skip 24/64 96 Skip 3 6/6 6 144 Skip 4 8/6 8 192 Skip 5 10/6 10 240 Skip 6 12/6 12 288 Skip 7 14/6 14 336 Skip 8 16/6 16 384 Skip 9 18/6 18 432 Skip

Page 1

Page 2

Logical top of form

Skip over perforation area

TOF

Description: Data "C" that crosses the "Skip Over Perf" area is printed at the next TOF.

Logical bottom of form

Command descriptions > 88

Page 1

Page 2

Top of form—define

> Code: ESC 4 > Compatibility: IBM III > Function:

Logical top of form

Description: No area of the logical form is skipped. Data A, B and C are printed as shown.

Logical bottom of form

Logically “mark” the current vertical print position.

> Additional details:

This command does not affect the CSF or SASF function.

Margins—define botto m margin (auto skip)

> Code: ESC N n > Compatibility: EPS FX/IBM III > Function:

Sets the skip-over perforation to n lines , acc o rd in g to the current LF value.

> Range:

Range n = 0 – 127 (Epson) 0 – 255 (IBM)

> Out of range:

Epson: The n value has to be less than the current form length. If n is equal to or greater

than the form length, this function will be ignored. If n = 0 or n = 128, the last skip over perforation value will remain as previous value. If n > 127, bit 7 is cleared and length is set to resulting value of 4.

Command descriptions > 89

IBM: The n value can be set regardless of paper length. (IBM) Not applicable—cannot receive value larger than 255 (FFH).

> Additional details:

The skip over perforation will be reset by ESC O or page length set command. Skip over perforation distance will not be affected by a change in the line pitch. Entering to the area of skip over perforation by LF, VT, CR (with LF), ESC J n and auto

line feed will cause the skip over perforation and feed to the top of form.

> Related functions:

Line length value is based on ESC 0, ESC 2, ESC A n, or ESC 3 n, ESC 1, ESC % 9 n.

Logical top of form

Page 1

Skip over perforation area

TOF

Logical bottom of form

Page 2

Description: Data "C" that crosses the "Skip Over Perf" area is printed at the next TOF.

Margins—cancel bottom margin ( au to skip)

> Code: ESC O > Compatibility: EPS FX/IBM III > Function:

Cancel Skip-Over Perforation.

> Additional details:

Skip over perforation is cleared when power down/power up I Prime occurs. Skip over perforation is cancelled when the form length is changed by the following

codes:

Command descriptions > 90

ESC C n and ESC C nul n.

Page 1

Page 2

Vertical tabs—select channel

> Code: ESC / n > Compatibility: EPS FX > Function:

Logical top of form

Description: No area of the logical form is skipped. Data A, B and C are printed as pictured.

Logical bottom of form

Select a vertical tab channel, specified by n.

> Range:

Range: n = 0 – 7 n = 128 – 135

> Out of range:

If n is not a number between 0 and 7 nor between 128 and 135, the command value will be ignored.

> Additional details:

Within each channel there can be up to 16 vertical tabs whi ch are independently set. In order to access the vertical tabs within each channel VT or CHR$(11) can be used. Tabs set by the ESC B command correspond to channel #0.

> Related functions:

Vertical Tab

Command descriptions > 91

Vertical tabs — define tab stops

> Code: ESC B n1 n2 ... nk NUL > Compatibility: EPS FX/IBM III > Function: Set the specified number of vertical tabs. > Range:

k specifies the number of vertical tabs. Range k = 1 – 16 (Epson)

1 – 64 (IBM) n is the specific line number at which each vertical tab is to be set. Range n = 1 – 255

> Out of range:

Value of k and n which exceed the maximum will be ignored. Paper will be loaded on printer even if the vertical tab setting exceeds the number of

lines between TOFs (one page length).

> Additional details:

To use n setting of 255 the line spacing must be set at less than 3/72 inch. Vertical tab stops are absolute, they are not changed by changing the line spacing

(Epson). If the line feed amount value is changed after the vertical tab setting declaration, vertical tab stops will be executed according to the new line spacing (IBM). They remain at the same distance from TOF.

The tab sequence must be terminated by CHR$(0) or any number less than the last tab or nk (Epson). The ESC sequence is terminated by CHR$(0). (IBM)

The vertical tabs set by thi s command correspond to channel #0. n value must be increasing. n1<n2<n3< ... <nk.

> Related functions:

ESC B nul will reset the TAB setting.

Vertical tabs—define tab stops in channels

> Code: ESC b n m1 m2 ... mk NUL > Compatibility: EPS FX > Function: Set m vertical tabs for each channel n. > Range:

Range m = 0 – 255 (Bit 7 of m is ignored.) Range n = 0 – 7

> Out of range:

if n>7, the command will be ignored.

> Additional details:

The VFU has 8 channels n = (0 to 7) and up to 16 tab stops (m = 1 to 16). The vertical tab setting may exceed the number of lines between TOFs (one page length).

This sequence must be terminated by CHR$(0), or any number less than mk. Tab settings are not affected by subsequent changes in line spacing.

Command descriptions > 92

m value must be increasing. m1<m2<m3< ... <mk.

> Related functions:

Upon power up n is set to channel no . 0 . T hi s means the same as ESC B.

Vertical tab—execute

> Code: VT > Compatibility: EPS FX/IBM III > Function: Prints the data in th e buffer and advance the paper to the next tab stop. > Additional details:

If vertical tabs are default set, this command will function the same as LF. Executing more than the legal number of vertical tabs set will cause execution of the

first vertical tab of the channel on the next page.

> Related functions:

Double width mode set by ESC SO (Epson mode only) or SO will be reset.

Vertical tabs – define tab stops in channels ( V FU)

> Code:

part 1 Part 2 Part 3

DC4 sp ... sp n1 ?

> Compatibility: ML > Function:

Define up to a total of 54 vertical tab stops in a maximum of 12 channels.

> Range:

Variable:

N ASCII DECIMAL HEXADECIMAL

n1 (Channel Number) =

1 - < 49 - 60 31 - 3C

Argument: TAB STOP (argument) = 1 to 54 occurrence Repeating constant s1 ... sx = 1 to 127 spaces

> Additional details:

This command is composed of 3 parts ...

part 1 part 2 Part 3

(initiator) (argument) (terminator)

DC4 SP...SP n1 ?

(repeat)

— Part 1 is the initiator and is sent once. — Part 2 consists of a variable number of spaces, each representing 1 print line,

and a tab channel number “n1”. This part can be sent multiple times. — Part 3 is the terminator, and is only sent once.

Command descriptions > 93

The maximum number of spaces “SP” in all arguments is 127. This number is the total sum of all “SP”s even if the “SP”s are associated with difference arguments.

The maximum number of tab stops (Part 2) or arguments is 54. The same tab channel can be defined more than once. VFU loading sets the Top Form.

Vertical tabs — execute

> Code: VT n > Compatibility: ML > Function:

Initiate printing action; print data in the print buffer by causing a print block c hange, feed the paper to the next channel stop specified by “n”.

> Range:

> Out of range:

The command will be ignored.

CHANNEL NUMBER ASCII

149 31 250 32 351 33 452 34 553 35 654 36 755 37 856 38 957 39 :58 3A ;59 3B

<60 3C

DECIMALS HEXADECIMAL

> Logical limitation:

If a channel number which is not defined in the VFU load sequence is specified in this command, this command will be ignored.

Paper-out sensor – enable

> Code: ESC 9 > Compatibility: EPS FX/IBM III > Function:

Enables the paper out sensor, which activates the alarm indicator when less than 0.5 inch of paper remains.

Command descriptions > 94

> Additional details:

Upon detection, the Alram indicator is lit and the printer is deselected. Paper out detector can also be enabled by MENU. Manual Paper Out Override:

— When the Alarm indicator is On, and the SEL button is pressed, 1 line of data is printed, and line feed is executed.

— Paper override function is valid until the next TOF position is reached. After the next TOF is reached, the function becomes invalid.

— When SEL button is pressed after paper is reset (Alarm LED is Off), the following states return and the printer is in the select mode:

— SEL indicator On. — Alarm indicator Off. — Printer is ready to receive data.

> While Paper Out Override is active, if multiple line feeds are received by the printer,

the printer executes the line feeds until the TOF position is reached. If there are l ine feeds that couldn’t be executed because the TOF was reached, they are “saved” and will execute after new paper is inserted.

> Unprinted data will be saved in the buffer and printed after paper is replaced and the

SEL button is pressed. If data in the print buffer is not printed because paper out was detected, the data will not be lost and can be printed af ter the paper is replaced and the SEL button is pressed.

Paper-out sensor – disable

> Code: ESC 8 > Compatibility: EPS FX/IBM III > Function:

Disables the paper out sensor.

> Additional details:

Paper error detector can also be disabled by MENU. Printer prints up to TOF, then stop s. Alarm indicator is ON.

Paper-out detection override—enable/disable

> Code: ESC E n > Compatibility: ML > Function:

Enable/disable the paper out detection override function in which even though the printer has detected that only 1 inch of paper remains to be printed on, printing action can still be executed until the next TOF is reached.

> Range:

n = 1, Paper Out Detection Override = Disabled. n < > 1, Paper Out Detection Override = Enabled.

> Out of range:

The command will be ignored.

Command descriptions > 95

> Additional details:

When the printer’s paper sensor switch detects that only 1 inch of paper remains in the platen path and the “Paper Out Detection Override” function is disabled (i.e. the printer is in the normal paper detection mode), the printer... – stops printing;

— immediately turns on PE/FAULT signals — printer = Off line — SEL LED = OFF— ALARM LED = On (Paper end is detected). While this condition exists, the user can continue to print by pressing the SEL button.

When this happens, the SEL LED is on and only one line of text is printed followed by a LF. After the 1 line is printed the S EL LED turns off and the printer returns to the deselect state it was in before the SEL button was pressed. This process can be repeated until the next TOF is reached.

During Paper-out detection override process (described above), if continuous LFs are executed, the printer will ad vance the paper unti l the next TOF i s reached. Once the next TOF is reached, all remaining feeds will be negated.

When the Paper Out Detection Override is enabled, and 1 inch of paper is d etected in the platen path, the paper-out condition is overridden, and printing continues normally. If there is enough data, the printer will continue to print beyond the physical edge of the paper and will continue to print on the platen until the next TOF is reached.

The alarm (paper-out) LED will turn on regardless of the Paper-Out Override function being enabled or disabled.

The TOF will be maintained even if paper out switch is disabled. This function is not available when the CSF is connected.

Cut-sheet feeder—single sheet insert

> Code: ESC EM I > Compatibility: EPS FX/IBM III > Function:

Feed a single cut-sheet into the printer.

> Additional details:

This command starts printing and performs carriage returns regardless of the paper mode.

If paper is already loaded, the printer will eject that sheet and feed another sheet to the TOF position.

If there is data in the print buffer and paper is already loaded, this command causes the data to be printed, the current sheet ejected and then the new sheet inserted.

Cut-sheet feeder—single sheet eject

> Code: ESC EM R > Compatibility: EPS FX/IBM III > Function:

If CSF is installed, paper in the platen path is ejected.

> Additional details:

This command starts printing and performs carriage returns regardless of the paper mode.

Command descriptions > 96

An LF code at the end of the page automatically causes the next sheet to be loaded. If data is in the print buffer, it is printed before the sheet is ejected.

Cut-sheet feeder—single sheet insert

> Code: ESC S > Compatibility: ML > Function:

FEED a single Cut-Sheet into the printer.

> Additional details:

If CSF is not installed, th is command is ignored. If paper is already loaded, the printer will eject that sheet and feed another sheet to

the TOF position. If there is data in the print buffer and paper is already loaded, this command causes

the data to be printed, the current sheet ejected and then the new sheet inserted.

Cut-sheet feeder—single sheet eject

> Code: ESC V > Compatibility: ML > Function:

Eject the cut-sheet paper that is currently in the platen path.

> Additional details:

This command is ignored when CSF is not installed. Any vertical feed command (LF, VT, FF, Direct Skip, and so on) that advances the

logical page beyond the physical page will cause the next sheet to be loaded. If data is in the print buffer, it is printed before the sheet is ejected.

Composite command for setting line feed q u an tit y

ESC DLE H Pno A1 A2 P1 P2 P3

> Code: 1B 10 48 in hexadecimal

27 16 72 in decimal Functions:

> This command is one of OKI-unique commands. > This command specifies the quantity of line feeding by parameter A1 (Basic LF

Quantity) and feeds paper by the specified quantity.

> Valid ranges and meanings of parameters

Pno: Specifies the length (in bytes) of parameters following the “Pro” parameter. The most significant bit (MSB) is void. 00H Pno FFH Pno < 05H: This command is void and the number of bytes specified by the “Pno” parameter are discarded.

A1: Specifies a basic line feeding pitch. The most significant bit (MSB) is void. 00H <= A1 <= FFH

A1=00H, 30H 1/60" pitch (Reserved) A1=01H, 31H 1/72" pitch A1=02H, 32H 1/144" pitch (Reserved) A1=03H, 33H 1/180" pitch A1=04H, 34H 1/216" pitch A1=05H, 35H 1/360" pitch (Reserved)

Command descriptions > 97

When the other parameter value is specified, the number of bytes specified by the “Pno” parameter are discarded.

A2: Specifies setting of parameters or execution of this command. The most significant bit (MSB) is void. 00H <= A2 <= FFH

A2 = even number: Sets the quantity of line feeding. A3 = odd number: Feeds paper by the specified quantity of line feeding.

P1 to P3: Specifies the quantity of line feeding according to the specified line feed pitch (by parameter A1). Each parameter uses the lower four bits of a byte to indicate a value of 1 to 9. (The higher four bits of each byte are ignored.)

P1: Hundreds digit of the LF quantity P2: Tens digit of the LF quantity P3: Ones digit of the LF quantity

The LF quantity must always be three digits long.

> This command can be entered anywhere on a line. > This command will not set TOF. > When an even value is specified for the A2 parameter (to set parameters of this

command), the following items are enabled: The specified LF quantity is referenced by the following operations: LF, VT, CR (with

LF), automatic carriage return, setting of page length, perforation skip, etc. The LF quantity of “000” can be specified (by parameters P1 to P3). The printer does not start printing. The LF quantity specified on the menu is used in the following cases: (a) When the printer receives an INITIALIZE command (ESC @) (or when “Reset

Inhibit” on the menu is “No”) (b) When the printer receives a software I-PRIME command (ESC } NUL) (c) When the printer receives an Emulation Change command (ESC { Pn) (except

for identical simulation) (d) When the printer receives an I/F I-PRIME-N signal (or when “I-Prime” on the

menu is not “Invalid”) (e) When a setting is made on the MENU (f) When the printer is reset by a switch (g) When the printer is powered-on (h) When the printer receives a Menu Factory Value Load command (ESC DLE 02H) (i) When the printer receives a Menu Set command (ESC DLE D)

Command descriptions > 98

> When an odd value is specified for the A2 parameter (to execute the command), the

printer performs the following: Reads data in the print buffe r, pri nt s it out, then moves the print head to the top of

the next line. Releases the 1-line Wide mode by SO/ESCSO. Prints and return the print head to the top of the line even when an LF quantity of

“000” is specified by parameters P1 to P3. Skips to the next TOF when a Perforation Skip command is entered. The LF quantity is not affected by the specified LF quantity Moves the print head to the left margin to indicate the next print position when the

Incremental Print mode is s e t .

CSF control

> Code: ESC [ D Ln Hn pft fc sd > Compatibility: IBM III > Function:

Controls the CSF function.

> Ranges and Meaning of Ln Hn

Meaning (Setting of Parameter Value) Ln, Hn shows a parameter value after it. Ln, Hn = Ln+Hn x256

Ranges 0 <= Ln <= 255, 0 <= Hn <= 255 Relationship between Ln and Hn Values, and Command Sequence

- Ln = Hn = 00H Up to ESC [ Ln Hn is received and discarded, and data following it is print da t a .

- 01H Ln+Hn × 256 03H Up to the parameter of a value specified by Ln+Hnx256 is valid (the setting of that number is also valid). Example) At Ln+Hn × 256 = 1, up to pft is valid.

- 04H Ln+Hn × 256 FFFFH Up to sd is valid, and data beyond it is received and discarded by (Ln+Hnx256)-3 bytes.

Range and Meaning of pft Meaning (Paperfeed Mode Turning) pft=01H ...The system is placed in single paperfeed mode to cause one-off page

ejection. pft=03H ...The system is placed in auto paperfeed mode.

pft that takes on a value other than the above becomes invalid, the paperfeed mode remains unchanged.

Range 0 <= pft <= 255

Command descriptions > 99

Single Paperfeed Mode only for One Page

- This mode is established at pft=01H.

- Single paperfeed is valid for the next page.

When paperfeed is finished ....Single paperfeed is valid for a page to be

fed next. After the printing and ejection of the affected page, single paperfeed is nullified from the data that follows the page.

When paperfeed is yet to be performed ....Single paperfeed is valid for a

page to be fed. When the sheet that follows the affected page is fed with the presence of

the next data after the reception of a command, or fed by the LF or FF command or another means, single paperfeed is nullified.

- With the reception of the first data of the next page, a paper jam condition occurs, causing paperfeed or printing not to be performed until the paper jam is cleared using the SEL button (clearing the paper jam, by the use of SEL button, makes the system feed paper automatically and perform printing).

- Single paperfeed is valid only for one page. Auto paperfeed mode is used from the next page.

- This mode does not have effect on switch-selected paperfeed (single paper-feed control is not performed). Paperfeed using commands (including FF code) is under single paperfeed mode control, as for paperfeed with usual data.

- Auto paperfeed mode A page-over function automatically feeds the next sheet.

> Range and Meaning of fc

Meaning (Choice of Feeder) This parameter is reserved for future use and has no meanings.

Range 0 <= fc <= 255

> Range and Meaning of sd

Meaning (Selection of CSF Bin) sd=01H: CSF 1 Bin is set.

sd=02H: CSF 2 Bin is set. (Not Support) sd that takes on a value other than the above becomes invalid, the setting remains the same.

> Range

0 <= sd <= 255

Set page length in defined un it

> Code: ESC ( C Ln Hn Lp Hp > Compatibility: EPS FX > Function: Set page length for the currently selected paper mode. Paper modes are

Top, Rear, Bottom and CSF.

Command descriptions > 100

OKI ML5720, ML5721, ML5790, ML5791 Technical Reference Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

INDICATORS

ML5720/ML5721