Oki ML1120, ML1190 Technical Reference Guide

ML1120/ML1190 eco

Technical Reference Guide

’

P

REFACE

Every effort has been made to ensure that the information in this document is
complete, accurate, and up-to-date. Oki Printing Solutions assumes no
responsibility for the results of errors beyond its control. Oki Printing Solutions 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
information in it. Mention of software products manufactured by other companies
does not necessarily constitute endorsement by Oki Printing Solutions.

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 to
the accuracy or completeness of the information contained herein.

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

http://www.okiprintingsolutions.com
Copyright © 2007 Oki Printing Solutions.
Oki, OKI Printing Solutions and Microline are registered trademarks of Oki Electric

Industry Company, Ltd.
ENERGY STAR is a trademark of the United States Environmental Protecti on Agency.
Microsoft, MS-DOS and Windows are registered trademarks of Microsoft

Corporation.
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 89/336/EEC (EMC) and 73/23/EEC (LVD) as amended
where applicable on the approximation of the laws of the member
states relating to electromagnetic compatibility and low voltage.

Technical Reference Guide – Preface > 2

C

ONTENTS

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

Notes, cautions and warnings. . . . . . . . . . . . . . . . . . 10

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

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

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

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

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

About this guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Online usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Printing pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Interface specifications . . . . . . . . . . . . . . . . . . . . . . 19

IEEE1284 parallel interface specifications . . . . . . . . . 19

Connectors and cable . . . . . . . . . . . . . . . . . . . . . 19

Parallel interface signals . . . . . . . . . . . . . . . . . . . 20

Parallel interface levels . . . . . . . . . . . . . . . . . . . . 20

Parallel interface circuits . . . . . . . . . . . . . . . . . . . 21

Parallel interface timing chart . . . . . . . . . . . . . . . 21

Support mode . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Universal Serial Bus (USB). . . . . . . . . . . . . . . . . . . . 21

Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

USB interface signals . . . . . . . . . . . . . . . . . . . . . 22

Mode and class of device. . . . . . . . . . . . . . . . . . . 23

Data signalling rate . . . . . . . . . . . . . . . . . . . . . . 23

Interface circuit . . . . . . . . . . . . . . . . . . . . . . . . . 24

Signal level . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Timing chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

RS-232C serial interface specifications . . . . . . . . . . . 28

Interface signals . . . . . . . . . . . . . . . . . . . . . . . . 28

Electrical characteristics . . . . . . . . . . . . . . . . . . . 29

Interface timing charts . . . . . . . . . . . . . . . . . . . . 30

Receiving margin . . . . . . . . . . . . . . . . . . . . . . . . 30

Description of communication procedures . . . . . . . 30

Interface control code. . . . . . . . . . . . . . . . . . . . . 3 0

Local test function . . . . . . . . . . . . . . . . . . . . . . . 32

Operator interface. . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Operator panel functions . . . . . . . . . . . . . . . . . . . . . 34

Print mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Hex Dump mode, Menu mode, Test mode. . . . . . . 38

Technical Reference Guide – Preface > 3

Maintenance mode 2 . . . . . . . . . . . . . . . . . . . . . 39

Special switch operations . . . . . . . . . . . . . . . . . . 39

Self Test mode. . . . . . . . . . . . . . . . . . . . . . . . . . 40

Rolling ASCII mode . . . . . . . . . . . . . . . . . . . . . . 40

Continuous fine line feed. . . . . . . . . . . . . . . . . . . 40

LED functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

ML1120 eco. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

ML1190 eco. . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Alarm/error indications . . . . . . . . . . . . . . . . . . . . . . 43

Recoverable alarms . . . . . . . . . . . . . . . . . . . . . . 43

Unrecoverable alarms. . . . . . . . . . . . . . . . . . . . . 44

Change Print Mode. . . . . . . . . . . . . . . . . . . . . . . 46

Menu selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Button switch functions. . . . . . . . . . . . . . . . . . . . 50

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Menu items . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Initialising menu settings . . . . . . . . . . . . . . . . . . 74

Adjusting TOF position . . . . . . . . . . . . . . . . . . . . . . 75

Printer speed settings . . . . . . . . . . . . . . . . . . . . . . . 76

Printer impact mode. . . . . . . . . . . . . . . . . . . . . . 76

Normal speed printing . . . . . . . . . . . . . . . . . . . 76

High speed printing . . . . . . . . . . . . . . . . . . . . . . 76

Quiet printing. . . . . . . . . . . . . . . . . . . . . . . . . . 76

Setting tof position at the place of user’s choice. . . 77

Self test printing. . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Rolling ASCII self test printing . . . . . . . . . . . . . . . . . 79

Hexadecimal Dump mode . . . . . . . . . . . . . . . . . . . . 80

Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

Continuous paper auto-loading. . . . . . . . . . . . . . . . . 81

Continuous paper auto-parking . . . . . . . . . . . . . . . . 81

Cut-sheet paper semi-auto-loading. . . . . . . . . . . . . . 82

Form tear-off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

Action. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83

Command descriptions . . . . . . . . . . . . . . . . . . . . . . . 84

Horizontal control . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Carriage return . . . . . . . . . . . . . . . . . . . . . . . . . 84

Horizontal tab set. . . . . . . . . . . . . . . . . . . . . . . . 84

Horizontal tab . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Reset tab settings to power-on default values . . . . 87

Technical Reference Guide – Preface > 4

Execute absolute horizontal dot position . . . . . . . . 87

Execute relative dot position . . . . . . . . . . . . . . . . 88

Move right relative dot position . . . . . . . . . . . . . . 90

Move left relative dot position . . . . . . . . . . . . . . . 90

Left margin set . . . . . . . . . . . . . . . . . . . . . . . . . 91

Right margin set . . . . . . . . . . . . . . . . . . . . . . . . 92

Set left/right margin. . . . . . . . . . . . . . . . . . . . . . 94

Auto justification . . . . . . . . . . . . . . . . . . . . . . . . 94

Set/reset unidirection printing . . . . . . . . . . . . . . . 96

One line unidirectional printing . . . . . . . . . . . . . . 96

Set/reset half speed printing . . . . . . . . . . . . . . . . 97

Backspace. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

One character data delete. . . . . . . . . . . . . . . . . . 98

Vertical control. . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

Set 1/8 inch fixed line spacing. . . . . . . . . . . . . . . 99

Set 7/72 inch fixed line spacing . . . . . . . . . . . . . . 99

Start line spacing. . . . . . . . . . . . . . . . . . . . . . . .100

Set 1/6 inch line spacing. . . . . . . . . . . . . . . . . . .100

Set n/60 inch line spacing. . . . . . . . . . . . . . . . . .101

Set n/180 inch line spacing . . . . . . . . . . . . . . . . .102

Set n/360 inch fine line spacing . . . . . . . . . . . . . .102

Set n/360 inch line spacing . . . . . . . . . . . . . . . . .103

Line feed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .104

Set/reset automatic linefeed . . . . . . . . . . . . . . . .104

Fine line feed (n/180 inch) . . . . . . . . . . . . . . . . .105

Fine line feed (n/360 inch) . . . . . . . . . . . . . . . . .106

Fine line feed (n/360 inch) . . . . . . . . . . . . . . . . .106

Reverse line feed . . . . . . . . . . . . . . . . . . . . . . . .107

Reverse line feed . . . . . . . . . . . . . . . . . . . . . . . .107

Form feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

Vertical tab . . . . . . . . . . . . . . . . . . . . . . . . . . . .109

Set vertical tab stops . . . . . . . . . . . . . . . . . . . . .109

Set vertical format unit (VFU) . . . . . . . . . . . . . . .110

Select vertical tab channel . . . . . . . . . . . . . . . . .111

Form length set by inches . . . . . . . . . . . . . . . . . .112

Form length set by lines . . . . . . . . . . . . . . . . . . .113

Set perforation auto skip. . . . . . . . . . . . . . . . . . .113

Reset perforation auto skip . . . . . . . . . . . . . . . . .114

Top of form set . . . . . . . . . . . . . . . . . . . . . . . . .115

Set vertical units . . . . . . . . . . . . . . . . . . . . . . . .115

Set n/360 inch fine line spacing . . . . . . . . . . . . . .115

Set n/360 inch line spacing . . . . . . . . . . . . . . . . .116

Set forward line spacing . . . . . . . . . . . . . . . . . . .117

Technical Reference Guide – Preface > 5

Set reverse line spacing . . . . . . . . . . . . . . . . . . .117

Character set . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117

Copies ROM CG to RAM CG . . . . . . . . . . . . . . . . .117

Character definition . . . . . . . . . . . . . . . . . . . . . .118

Load DLL character. . . . . . . . . . . . . . . . . . . . . . .120

DLL font select . . . . . . . . . . . . . . . . . . . . . . . . . .122

Foreign character set select. . . . . . . . . . . . . . . . .122

Select international character set. . . . . . . . . . . . .125

Select character table. . . . . . . . . . . . . . . . . . . . .126

Enable upper ASCII characters . . . . . . . . . . . . . .127

Select character set II . . . . . . . . . . . . . . . . . . . .127

Print continuously from all characters chart. . . . . .128

Print one character from all characters chart . . . . .128

Select character set I . . . . . . . . . . . . . . . . . . . . .128

Select character set II . . . . . . . . . . . . . . . . . . . .129

Code page select . . . . . . . . . . . . . . . . . . . . . . . .129

Assign character table . . . . . . . . . . . . . . . . . . . .132

Select character table. . . . . . . . . . . . . . . . . . . . .133

Select font. . . . . . . . . . . . . . . . . . . . . . . . . . . . .134

Print quality – select HSD . . . . . . . . . . . . . . . . . .134

Print quality – select HSD . . . . . . . . . . . . . . . . . .135

Font description . . . . . . . . . . . . . . . . . . . . . . . . . . .136

Select character font . . . . . . . . . . . . . . . . . . . . .136

Select type styles. . . . . . . . . . . . . . . . . . . . . . . .137

Set/reset proportional spacing. . . . . . . . . . . . . . .138

Set/reset proportional spacing. . . . . . . . . . . . . . .139

Set pica character pitch (10 CPI) . . . . . . . . . . . . .139

Set 10 CPI. . . . . . . . . . . . . . . . . . . . . . . . . . . . .140

Set elite character pitch (12 CPI). . . . . . . . . . . . .140

Set 12 CPI. . . . . . . . . . . . . . . . . . . . . . . . . . . . .141

Set 15 character per inch . . . . . . . . . . . . . . . . . .141

Set compressed character pitch (17.1/20 CPI). . . .142

Set compressed character pitch (17.1/20 CPI). . . .142

Reset compressed character pitch . . . . . . . . . . . .143

Set character spacing . . . . . . . . . . . . . . . . . . . . .143

Set italic characters . . . . . . . . . . . . . . . . . . . . . .144

Reset italic characters. . . . . . . . . . . . . . . . . . . . .145

Set italic character . . . . . . . . . . . . . . . . . . . . . . .145

Reset italic characters. . . . . . . . . . . . . . . . . . . . .145

Text print features . . . . . . . . . . . . . . . . . . . . . . . . .146

Set/reset underlining . . . . . . . . . . . . . . . . . . . . .146

Set subscript/superscript. . . . . . . . . . . . . . . . . . .147

Reset super/subscript. . . . . . . . . . . . . . . . . . . . .147

Technical Reference Guide – Preface > 6

Set emphasised print mode. . . . . . . . . . . . . . . . .148

Reset emphasised print mode . . . . . . . . . . . . . . .148

Set double strike print mode . . . . . . . . . . . . . . . .149

Reset double strike mode . . . . . . . . . . . . . . . . . .149

Set double or expanded characters . . . . . . . . . . .150

Set immediate double width characters. . . . . . . . .150

Set immediate double width characters. . . . . . . . .151

Reset immediate double width characters . . . . . . .151

Set/reset double height characters. . . . . . . . . . . .152

Set/reset double height characters. . . . . . . . . . . .153

Set/reset double height characters. . . . . . . . . . . .153

Overscore set/reset . . . . . . . . . . . . . . . . . . . . . .154

Select character style . . . . . . . . . . . . . . . . . . . . .154

Set double width or expanded characters . . . . . . .155

Set/reset double height characters. . . . . . . . . . . .156

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

Enter/exit bit image graphics . . . . . . . . . . . . . . . .157

Single density graphics. . . . . . . . . . . . . . . . . . . .160

Double density graphics . . . . . . . . . . . . . . . . . . .161

Quasi-double-density graphics. . . . . . . . . . . . . . .161

Set quadruple density graphics . . . . . . . . . . . . . .162

Reassign alternate graphics codes . . . . . . . . . . . .163

Graphics resolution. . . . . . . . . . . . . . . . . . . . . . .164

Select aspect ratio . . . . . . . . . . . . . . . . . . . . . . .165

Composite commands. . . . . . . . . . . . . . . . . . . . . . .166

Print mode select . . . . . . . . . . . . . . . . . . . . . . . .166

Print mode select . . . . . . . . . . . . . . . . . . . . . . . .167

General control . . . . . . . . . . . . . . . . . . . . . . . . .169

Printer initialisation . . . . . . . . . . . . . . . . . . . . . .169

Cancel code. . . . . . . . . . . . . . . . . . . . . . . . . . . .169

Set bit 7 code to 1 . . . . . . . . . . . . . . . . . . . . . . .169

Set bit 7 code to 0 . . . . . . . . . . . . . . . . . . . . . . .170

Reset 8 bit mode . . . . . . . . . . . . . . . . . . . . . . . .170

Set print suppress . . . . . . . . . . . . . . . . . . . . . . .171

Print suppress . . . . . . . . . . . . . . . . . . . . . . . . . .171

Reset print suppress mode . . . . . . . . . . . . . . . . .171

Stop printing . . . . . . . . . . . . . . . . . . . . . . . . . . .172

Enable paper out sensor . . . . . . . . . . . . . . . . . . .172

Disable paper out sensor. . . . . . . . . . . . . . . . . . .173

Select emulation . . . . . . . . . . . . . . . . . . . . . . . .174

Printer initialisation . . . . . . . . . . . . . . . . . . . . . .174

Printer initialisation . . . . . . . . . . . . . . . . . . . . . .175

Barcode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .175

Technical Reference Guide – Preface > 7

Print barcode. . . . . . . . . . . . . . . . . . . . . . . . . . .175

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180

ML1120 eco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .180

Physical specification . . . . . . . . . . . . . . . . . . . . .180

Power requirements . . . . . . . . . . . . . . . . . . . . . .180

Electrical insulation. . . . . . . . . . . . . . . . . . . . . . .180

Environmental conditions . . . . . . . . . . . . . . . . . .181

Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .181

Agency approvals. . . . . . . . . . . . . . . . . . . . . . . .182

Print specification. . . . . . . . . . . . . . . . . . . . . . . .182

Paper specification . . . . . . . . . . . . . . . . . . . . . . .184

Ribbon specification . . . . . . . . . . . . . . . . . . . . . .186

Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . .186

ML1190 eco . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .187

Physical specification . . . . . . . . . . . . . . . . . . . . .187

Power requirements . . . . . . . . . . . . . . . . . . . . . .187

Electrical insulation. . . . . . . . . . . . . . . . . . . . . . .187

Environmental conditions . . . . . . . . . . . . . . . . . .188

Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .188

Agency approvals. . . . . . . . . . . . . . . . . . . . . . . .189

Print specification. . . . . . . . . . . . . . . . . . . . . . . .189

Paper specification . . . . . . . . . . . . . . . . . . . . . . .191

Ribbon specification . . . . . . . . . . . . . . . . . . . . . .193

Reliability . . . . . . . . . . . . . . . . . . . . . . . . . . . . .193

Appendix A – Command summary . . . . . . . . . . . . . 195

Command summary by initiator . . . . . . . . . . . . . . . .195

Command summary by function. . . . . . . . . . . . . . . .203

Appendix B – Print modes/features . . . . . . . . . . . . 210

IBM mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .210

EPSON mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .211

Appendix C – Code pages . . . . . . . . . . . . . . . . . . . . 212

Appendix D – Media specifications . . . . . . . . . . . . . 220

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .220

Unsuitable paper . . . . . . . . . . . . . . . . . . . . . . . .220

Pre-printed paper. . . . . . . . . . . . . . . . . . . . . . . .221

Paper storage conditions. . . . . . . . . . . . . . . . . . .222

Usable paper types and assurance range . . . . . . .222

Continuous paper (continuous forms) . . . . . . . . . . . .223

Vertical and horizontal dimensions . . . . . . . . . . . .223

Feed hole (sprocket hole) positions and sizes . . . .224

Perforation dimensions . . . . . . . . . . . . . . . . . . . .226

Paper size and printing areas. . . . . . . . . . . . . . . .228

Technical Reference Guide – Preface > 8

Paper quality . . . . . . . . . . . . . . . . . . . . . . . . . . .229

Paper weight and max. no. of form parts . . . . . . .230

Methods for joining parts of multipart forms . . . . .230

Horizontal perforation rising . . . . . . . . . . . . . . . .234

Misalignment between feed holes. . . . . . . . . . . . .235

Binding holes. . . . . . . . . . . . . . . . . . . . . . . . . . .235

Corner cuts . . . . . . . . . . . . . . . . . . . . . . . . . . . .236

Paper condition . . . . . . . . . . . . . . . . . . . . . . . . .237

Cut-sheet paper . . . . . . . . . . . . . . . . . . . . . . . . . . .238

Vertical and horizontal dimensions . . . . . . . . . . . .238

Paper size and printing areas. . . . . . . . . . . . . . . .239

Paper quality . . . . . . . . . . . . . . . . . . . . . . . . . . .241

Paper weight and max. no. of form parts . . . . . . .241

Joining of parts of multipart forms . . . . . . . . . . . .242

Binding holes. . . . . . . . . . . . . . . . . . . . . . . . . . .243

Perforations. . . . . . . . . . . . . . . . . . . . . . . . . . . .243

Folds, bends and curls of cut-sheet paper . . . . . . .244

Envelopes (individual). . . . . . . . . . . . . . . . . . . . . . .245

Label paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .246

Package delivery slips . . . . . . . . . . . . . . . . . . . . . . .250

Recycled paper. . . . . . . . . . . . . . . . . . . . . . . . . . . .251

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252

Oki Printing Solutions contact details. . . . . . . . . . . 253

Technical Reference Guide – Preface > 9

N

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.

NOTE
This product is not intended for use in the immediate visual
field on the display work place. To avoid disturbing reflections
on the display work place, this product shall not be placed in
the immediate field of vision.

Technical Reference Guide – Notes, cautions and warnings. > 10

I

NTRODUCTION

The ML1120 eco (9-pin) and ML1190 eco (24-pin) are designed
to provide highly reliable letter quality printing and high
resolution graphics for the desktop/office printing environment.
Both models combine state-of-the-art 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.

F

EATURES

ML1120 eco and ML1190 eco features include:

> OKI smart Paper Handling (ML1190 eco)
> Direct access control panel
> Structured direct access menu for easy set up
> Printhead life: 200M characters (average) in 10 CPI Utility

mode at normal 25% duty, 35% page density

> Bidirectional short-line-seeking printing
> Print speed:

333 CPS HSD (10 CPI)

250 CPS Utility (10 CPI)

83 CPS LQ (10 CPI) (ML1190 eco)

62.5 CPS NLQ (10 CPI)(ML1120 eco)

> Paper feed

Rear path (with push tractor)

Top tray

Bottom path (with pull tractor)

> Paper handling

Automatic sheet loading

Short paper tear-off available by menu selection or TEAR

switch operation

Auto-loading for single sheet and continuous paper

Auto park feature

> Paper copies

Technical Reference Guide – Introduction > 11

9 – 11 lb, 5 part

> Cartridge ribbon
> Interfaces

Standard IEEE1284 parallel interface

USB 2.0(full speed) interface

RS-232C Serial interface

> ML1120 eco: 55 dBA noise

ML1190 eco: 53 dBA noise

> ML1190 eco: 64 kbytes max. receive buffer

ML1120 eco: 64 kbytes max. receive buffer

> Line feed resolution at:

ML1190 eco: 1/6 in, 1/8 in, n/72 in,

n/144 in, n/180, n/216 in simulated by n/288 in, n360 in

ML1120 eco: 1/6 in, 1/8 in, n/72 in,

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

> Agency approved by:

200 V system: UL

230 V model: CE, GS

> Barcode data printing
> Postnet bar code data printing

S

TANDARD CONFIGURATION

The ML1120 eco and ML1190 eco consist of the following
components:

> Printer mechanism
> Power supply unit
> Control board (including an IEEE1284 parallel interface,

RS-232C serial interface and USB interface)

> Operation panel board
> Acoustic covers
> Tractor feed unit

Technical Reference Guide – Introduction > 12

NOTE

3

4

5

7

9

8

2

6

1

It is not recommended that you use either the parallel or USB
port when the RS-232C option is installed in this product.

I

DENTIFYING COMPONENT PARTS

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

F

RONT VIEW

1. Print Head: prints the characters on the paper.

2. Paper Type Lever: set according to the type of paper used

– cut sheet or continuous forms.

3. Platen Knob: turn to move or eject the paper.

4. Paper Thickness Lever: set according to the thickness of

5. Control Panel: contains button switches and indicators

the paper. There is also a setting to facilitate ribbon

replacement.

(described in detail later) that allow you to operate the

printer.

Technical Reference Guide – Introduction > 13

ML1120 eco

1

2

3

4

5

PITCH

SPEED

SEL ALARM

SEL

FONT

LF/FF LOAD/EJECT TEAR

ML1190 eco

PITCH

SEL ALARM

SEL

FONT

LF/FF LOAD/EJECT TEAR

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

7. Ribbon Cartridge: holds the printer ribbon.

8. Pull Up Roller Assembly: aids paper exit.

9. Pull Up Guide: prevents paper skew.

R

EAR VIEW

STATUS

STATUS

1. Input Tray: insert cut sheet paper for use by the printer
(one sheet at a time). This tray can be adjusted to either
a horizontal or an inclined position.

2. Power connector: connect to printer power cable.

Technical Reference Guide – Introduction > 14

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

4. Pin Tractor: to load and feed continuous forms.

5. Rear Cover.

6

8

7

6. Serial connector: connect to serial interface cable.

7. USB connector: connect to USB interface cable.

8. Parallel connector: connect to parallel interface connector.

Technical Reference Guide – Introduction > 15

A

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 web site
www.okieng.com.

> 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.

> Installation Guides: accompany consumable items and

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

consumables and optional accessories.

Technical Reference Guide – About this guide > 16

> Online Help: online information accessible from the

printer driver and utility software.

O

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 3.)

> In the list of bookmarks, click on Index to jump to the

Index. (If the bookmarks are not available, use the

“Contents” on page 3.) 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.

P

RINTING PAGES

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

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

Technical Reference Guide – About this guide > 17

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

(c) [Pages from] and [to], (3), for the range of pages

you specify by entering their page numbers.

3. Click on OK.

Technical Reference Guide – About this guide > 18

I

NTERFACE SPECIFICATIONS

IEEE1284

C

ONNECTORS AND CABLE

Connectors

Cable

PARALLEL INTERFACE SPECIFICATIONS

Printer side:
36-pin receptacle 57-40360-830B (Amphenol or Daiichi

Electronics) or equivalent
Cable side:
36-pin plug 57-30360 (Amphenol or Daiichi Electronics) or

equivalent.

Use a cable less than 6 ft (1.8 m) in total length.
(A shielded cable is required and use of twisted-pair wires

is recommended for noise prevention.)
The cable is not supplied with the printer.

Technical Reference Guide – Interface specifications > 19

P

18

36

1

19

ARALLEL INTERFACE SIGNALS

PinNo. Direction

1

2

3

4

5

6

7

8

9

10

11

12

13

14

16, 33

17

18

19 to 30

31

32

15, 34

35

36

Signal

STROBE

DATA BIT 1

DATA BIT 2

DATA BIT 3

DATA BIT 4

DATA BIT 5

DATA BIT 6

DATA BIT 7

DATA BIT 8

ACKNLG

BUSY

PE

SEL

AUTO FEED

GND

CHASSIS GROUND

GND

INIT

ERROR

SLCT IN

To printer

To printer

From printer

From printer

From printer

From printer

To printer

To printer

From printer

To printer

NOTE

Description

Samples input data when changing from low
level to high level.

Input data: High level indicates 1 and low
level 0 .

Indicates character input completion, or function
operation end, at low level.

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

High level indicates paper end.

High level indicates select (on line) condition.
“Auto Feed” in menu set as valid in EPS mode

Signal ground.

Frame ground.
Fixed to High (Connected to + 5 V via 235 K)Ω

Twisted pair return (for pin No. 1 to 11)

This signal goes from high to low level when
paper runs out.
(Possible to indicate error and Off Line state).

Unused

Fixed to High (Connected to +5 V via 3.3 K Ω)

Connected to input port

Compatible Nibble

HostClk

PrtClk

PrtBusy

AckDataReq

Xflag

HostBusy

nDataAvail

IEEE1284
active

Connector pin arrangement for above.

P

ARALLEL INTERFACE LEVELS

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

Technical Reference Guide – Interface specifications > 20

P

BUSY, ACKNOWLEDGE, PAPER END, SLECT, FAULT

LVC161284

1

2 HL

+5 V

240 Ω

(a) Receiver

(b) Driver

DATA BIT1 to
DATA BIT8

DATA

STROBE

(H)

(L)

(H)

(L)

(H)

(L)

ACKNLG

BUSY

μs

min

s

min

0.5 μs
min

μs

max

s

1.0

1.0

μ

0.5

T busy

t1 =1~4

μ

t1

t1

ARALLEL INTERFACE CIRCUITS

P

ARALLEL INTERFACE TIMING CHART

S

UPPORT MODE

Compatible
Nibble (PnP Device ID only)

U

NIVERSAL SERIAL BUS

Universal Serial Bus Specification Revision 2.0 full speed
compliance.

Technical Reference Guide – Interface specifications > 21

(USB)

C

2

34

1

ONNECTORS

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

C

ABLE

a:
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 (Not Used)
2 D­3 D+
4 GND
Shell Shield

NOTE

Connector pin arrangement for above:

Technical Reference Guide – Interface specifications > 22

M

ODE AND CLASS OF DEVICE

Full-speed driver
Self-powered device

D

ATA SIGNALLING RATE

Full-speed function – 12 Mb/s

Technical Reference Guide – Interface specifications > 23

I

NTERFACE CIRCUIT

S

IGNAL LEVEL

TxD+

TxD-

Full-speed

Buffer

+ 3.3V

Rs

Rs

Input/output level

PARAMETER SYMBOL MIN. MAX. UNITS

Input levels:

High (driven) V

High (floating) V

Low V

IH

IHZ

IL

Output levels:

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

voltage

V

CRS

2.0 V

2.7 3.6 V

0.8 V

1.3 2.0 V

Technical Reference Guide – Interface specifications > 24

Signalling levels

Bus State

Required Acceptable

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

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

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

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

IL

Signalling Levels

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

IH

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

IH

Data J state:

Low-speed
Full-speed

Differential “0”
Differential “1”

Data K state:

Low-speed
Full-speed

Differential “1”
Differential “0”

Idle state:

Low-speed
Full-speed

D- > V

(min) and D+ < VIL(max)

IHZ

D+ > V

(min) and D- < VIL(max)

IHZ

D- > V

(min) and D+ < VIH(min)

IHZ

D+>V

(min) and D- < VIH(min)

IHZ

Resume state Data K state

Start-of-

Data lines switch from Idle to K state

Packet (SOP)

End-of-Packet (EOP)

Disconnect

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

SE0 for ≥ 2.5μs

SE0 for ≥ 1 bit time1followed by a J
state

(at downstream port)

Connect

Idle for ≥ 2ms Idle for ≥ 2.5μs

(at downstream port)

Reset D+ and D- < V

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

IL

NOTE

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

Technical Reference Guide – Interface specifications > 25

T

VIHZ(min)

VIL

VSS

D+/D-

D-/D+

‡2.5μs

Device

Connected

Disconnect

Detected

IMING CHART

Packet voltage levels

VOH(min)

VIH(min)

VIL(max)

VOL(max)

VSS

Bus Idle

SOP

VOH(min)

VIH(min)

VIL(max)

VOL(max)

VSS

Disconnect detection

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

Full-speed device connect detection

Device

Connected

D+

D-

‡2.5

μs

Connect
Detected

VIH

D-/D+

VSS

Technical Reference Guide – Interface specifications > 26

Differential data jitter

TPERIOD

Differential
Data Lines

Diff. Data-to-

SE0 Skew

N

*

TPERIOD + TxDEOP

Crossover

Point

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

Crossover

Extended

TxDEOP = -2ns~5ns

Receiver EOP Width: TFEOPT (80ns)

TPERIOD

Differential
Data Lines
(VCRS)

Crossover

Points

Consecutive

Transitions

*

TPERIOD + TxDJ1

N

N

Paired

Transitions

*

TPERIOD + TxDJ2

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

Differential-to-EOP transition skew and EOP width

Receiver jitter tolerance

TPERIOD

Differential
Data Lines

}

TxJR

}

Consecutive

*

N

TPERIOD + TxDJ1

Transitions

Paired

*

TPERIOD + TxJR2

N

}

Transitions

TxJR1

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

TxJR1

Technical Reference Guide – Interface specifications > 27

RS-232C

(Viewed from interface cable side)

13

25

1

14

I

NTERFACE SIGNALS

SERIAL INTERFACE SPECIFICATIONS

PIN

SIGNAL CODE SIGNAL FUNCTION

NO.

1 Protective Ground PG — Frame ground
2 Transmitted Data TD From printer Data from

3 Received Data RD To printer Data to printer
4 Request to Send RTS From printer Signal to

7 Signal Ground SG — Signal ground
11 Supervisory Send

20 Data Terminal

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

Data

Ready

— — — Unused

SSD From printer Signal to

DTR From printer Signal to

printer

indicate printer
cannot receive
data in printer
Busy/Ready
protocol

indicate printer
cannot receive
data in printer
Busy/Ready
protocol

indicate printer
cannot receive
data in printer
Busy/Ready
protocol

NOTE

1. Connector pin arrangement for above:

Technical Reference Guide – Interface specifications > 28

E

Equivalent to HIN202

INPUT

OUTPUT

OUTPUT

+9V

+3V

-3V

-9V

+5V

400

Equivalent to HIN202

INPUT

+12V

-12V

-3V

+3V

INPUT

OUTPUT

5 K

LECTRICAL CHARACTERISTICS

Signal levels

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

–15 to –3 V: LOW = OFF = LOGIC “1”
+15 to + 3 V: HIGH = ON = LOGIC “0”

Line driver

NOTE

The above figures are the standard values for a load of
3 Kohm, 15 pF and a driver source level of ±9 V.

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.

Technical Reference Guide – Interface specifications > 29

I

NTERFACE TIMING CHARTS

SSD signal timing chart

Data

RD

HIGH

LOW

SSD

BUSY

READY

R

ECEIVING MARGIN

Stop bit

0.5 bitStart bit

MAX 5 ms

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

D

ESCRIPTION OF COMMUNICATION PROCEDURES

Three types of protocol can be selected by menu communication
procedures:

> DTR
> X-ON/X -OFF
> DTR and X-ON/X-OFF

I

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

Technical Reference Guide – Interface specifications > 30