Xerox 721P83071 User Manual
Xerox 4635 Laser Printing System
Product Reference
XEROX
January 1996
721P83071
Xerox Corporation
701 S. Aviation Boulevard
El Segundo, CA 90245
© 1991, 1992, 1993, 1994, 1995, 1996 by Xerox Corporation. All
rights reserved.
Copyright protection claimed includes all forms and matters of
copyrightable material and information now allowed by statutory
or judicial law or hereinafter granted, including without limitation,
material generated from the software programs which are
displayed on the screen, such as icons, screen displays, looks,
etc.
Printed in the United States of America
Publication number: 721P83071
Xerox®, 4635, and all Xerox products mentioned in this
publication are trademarks of Xerox Corporation. Products and
trademarks of other companies are also acknowledged.
DEC and VAX are trademarks of Digital Equipment Corporation.
IBM and all IBM products mentioned in this publication are
trademarks of International Business Machines, Inc.
WARNING: This equipment has been tested and found to
comply with the limits for a Class A digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential
area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.
Changes are periodically made to this document. Changes,
technical inaccuracies, and typographic errors will be corrected in
subsequent editions.
This document was created on the Xerox 6085 Professional
Computer System using VP software. The typeface is Optima.
Related publications
The Xerox 4635 Laser Printing System Product Reference is part
of the ten-manual reference set for your laser printing system.
The entire reference set is listed in the table below. Several
other related documents are also listed for your convenience.
For a complete list and description of available Xerox
documentation, refer to the Xerox Documentation Catalog
(Publication number 610P17417) or call the Xerox
Documentation and Software Services (XDSS) at 1-800-445-5554.
Publication Number
Xerox Dynamic Document Interface
Operator Guide
Xerox Dynamic Document Interface
Command Summary
Xerox 4635 Laser Printing System
Operator Guide
Xerox 4635 Laser Printing System
Operations Reference
Xerox 4635 Laser Printing System
Sysgen Guide
Xerox 4635 Laser Printing System
Message Guide
Xerox 4635 Laser Printing System
PDL/DJDE Reference
Xerox 4635 Laser Printing System
Forms Creation Guide
Xerox 4635 Laser Printing System
Product Reference
Xerox 4635 Laser Printing System
Installation Planning Guide
720P13670
720P13680
721P83011
721P83021
721P83030
721P83040
721P83050
721P83060
721P83071
721P83081
Xerox 4635 Laser Printing System
Operator Command Summary Card
Xerox 4635 Laser Printing System
PC UI Reference
Xerox Laser Printing Systems
Tape Formats Manual
Xerox Laser Printing Systems
Standard Font Library Font User Guide
Helpful Facts About Paper 721P82490
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE iii
721P83090
721P83101
600P86175
600P86174
Notice
This publication may contain descriptions of concepts and
features not currently available for your Xerox Laser Printing
System. Consult your Xerox sales representative or your
operating system software program description for additional
information.
iv XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Table of contents
Related publications iii
Notice iv
Introduction viii
4635 LPS Product Reference viii
About the reference set ix
4635 Laser Printing System document set ix
Document conventions xii
1. 4635 LPS overview 1-1
4635 LPS 1-2
Software 1-2
Options 1-3
9-track magnetic tape drive 1-3
18-track cartridge tape drive 1-3
Bypass transport 1-3
Input enablement device 1-3
5.25-inch floppy disk drive 1-4
Expanded disk memory 1-4
Expanded bitmap memory 1-4
Bar code reader 1-4
Raster image processor 1-4
LPS connection 1-4
4635 LPS specifications 1-6
Equipment dimensions 1-6
Clearance requirements 1-6
Environmental requirements 1-6
Electrical requirements 1-7
4635 LPS features 1-8
2. Basic concepts 2-1
LPS overview 2-1
System controller 2-2
LPS interfaces 2-2
LPS system disk storage and memory 2-2
Printer 2-3
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE v
TABLE OF CONTENTS
Imaging subsystem 2-3
Xerographic subsystem 2-3
Output subsystem 2-4
LPS production process overview 2-4
Input 2-4
Sources of input for the LPS 2-4
Types of data 2-6
Special processing 2-6
Output 2-7
Job source library (JSL) files 2-7
Fonts 2-8
3. 4635 LPS hardware components 3-1
Major components 3-1
System controller hardware components 3-1
Printer hardware components 3-5
Attention light 3-8
Attention alarm 3-8
4. 4635 LPS software components 4-1
LPS operating system 4-1
Operating system software functional description 4-2
Printer software 4-4
User interface software and user dialog software 4-4
Software 4-4
Optional host-resident software packages 4-5
5. Product differences/user considerations 5-1
LPS compatibility and comparison 5-1
Using your 4635 LPS as a backup LPS 5-2
Checking paper sizes and special stocks 5-8
Comparing LPS print job resolution 5-10
Checking JDL compatibility 5-10
Checking PDL compatibility 5-11
LPS comparison 5-13
4635 LPS user considerations 5-17
4635 LPS edgemarking 5-17
Registration shift and skew 5-19
Paper size 5-20
System page size 5-20
Virtual page size 5-21
Error messages 5-21
vi XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
TABLE OF CONTENTS
Deletions 5-21
Print Darkness 5-22
Interpolation and scanned images 5-23
Switching paper size and feed modes 5-23
Cleaning time between pitch mode changes 5-24
6. Xerox customer resources 6-1
Xerox support services 6-1
Xerox Customer Support Center 6-1
Customer Service Support Center 6-2
Xerox Connection 6-2
Xerox Font Center 6-3
Xerox Customer Documentation Catalog 6-3
Xerox Documentation and Software Services 6-3
Xerox Supplies Order Service 6-4
Appendices
A. Audit log record A-1
Master audit directory A-1
Audit log data A-3
Log header record A-3
Page detail record A-5
Waste management detail record A-6
Operations log data record A-7
Notes A-8
Strings A-8
Dates A-8
Record type codes A-8
Error flags A-8
Log flags A-8
Audit flags A-9
Completion status codes A-9
Key audit report calculations A-10
Glossary GLOSSARY-1
Index INDEX-1
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE vii
4635 LPS Product Reference
Introduction
The purpose of the 4635 LPS Product Reference is to:
• Introduce the Xerox 4635 Laser Printing System (LPS)
hardware and software
• Introduce basic concepts associated with LPS printing
• Compare the 4635 LPS to other LPS products
• Describe some of the user considerations associated with
4635 LPS performance.
Since the 4635 LPS Product Reference is a composite of
information aimed at satisfying a variety of reader requirements,
certain chapters or chapter sections may be skipped by the
experienced LPS user. For example, the basic concepts in
chapter 2 would be desirable reading for someone with little or
no LPS experience, while an experienced LPS user need not read
it. The contents of each chapter are described below.
Chapter 1: Overview. Presents 4635 LPS features, options, and
specifications.
Chapter 2: Basic concepts. Introduces basic concepts
associated with LPS printing, as well as an overview of the LPS
production process.
Chapter 3: Hardware. Introduces major standard and optional
hardware components.
Chapter 4: Software. Introduces LPS software, describes the
functional operation of the software, and provides an overview of
software features.
Chapter 5: Product differences. Provides a comparison of LPS
products, addresses compatibility issues, and explains inherent
user considerations.
Chapter 6: Xerox customer resources. Provides descriptions
and telephone numbers for service, customer support, upgrades,
and supplies for Xerox customers in the United States.
A glossary and an index are provided at the back of this guide.
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE viii
INTRODUCTION
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About the reference set
This document is part of a reference set designed to help you
receive maximum benefit from your 4635 laser printing system.
To help you select the appropriate document for your needs, the
following section identifies the documents in the set and
describes the information contained in each.
4635 Laser Printing System document set
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4635 LPS
Product
Reference
• Product overview
• Hardware and software
• LPS connections
• User considerations
• LPS comparisons
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4635 LPS
Operator
Guide
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4635 LPS
PDL/DJDE
Reference
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4635 LPS
System
Generation
Guide
• System overview
• PC UI procedures
• Paper facts and procedures
• Operating procedures
• Maintenance
• Problem solving
• Supplies
• Meter reading and reporting
• Print Description Language components and processes
• Input processing functions
• Output processing functions
• PDL/DJDE command summary
• Page formatting guidelines
• Character code assignment tables
• PDL/DJDE programming information with step-by-step
instructions
• Configuration options
• Commands
• OSS software installation, upgrade, and modification
procedures
ix XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
INTRODUCTION
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4635 LPS
Operations
Reference
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4635 LPS
Forms
Creation
Guide
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4635 LPS
PC UI
Reference
• Command syntax for operator and system administrator
procedures
• LPS defaults
• LPS resources
• Command summaries
• Communication and graphics on the LPS
• Command files
• Basic concepts for creating forms
• Coding and compiling for LPS Forms Description Language
• Sample form setup command sets
• Tips for successful forms creation
• PC UI procedures
• Hierarchy of PC UI windows
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4635 LPS
Operator
Command
Summary
Card
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4635 LPS
Message
Guide
• Provides a quick reference of commonly-used operator
commands.
• OSS and other messages
• Meaning and recovery procedures
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE x
INTRODUCTION
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4635 LPS
Installation
Planning
Guide
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Tape Formats
Manual
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LPS Standard
Font Library
Font User
Guide
• LPS basic components and options
• Tasks that must be accomplished before installation
• Preinstallation requirements
• Installation process
• Postinstallation activities
• Characteristics of different formats
• File organization
• Data formats
• Carriage control conventions
• Font naming conventions
• Listing of standard fonts
• Data sheets
• Glossary of typography terminology
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Helpful Facts
About Paper
• Selection and guidelines
• Storage and handling
• Specifications for different printers
xi XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Document conventions
INTRODUCTION
This guide uses the following conventions:
< > Angle brackets are used for keys on the system controller
keyboard.
{ } Curly brackets are used for required characters.
... Ellipses indicate that you can repeat a parameter or list a series of
parameters.
[ ] Square brackets are used for optional command characters.
| Vertical bars are used to separate parameters in a series. The
vertical bar stands for “or.”
bold Bold is used for characters you enter at the command line.
italics Italics is used for variable information.
terminal font Terminal or monospace font is used to display system responses.
underline
System default parameters are underlined.
UPPERCASE Uppercase letters are used for command names.
Note: You may key in entire words for each command, or the
first three characters of each word. In this manual the entire
word of each command is spelled out.
CAUTION: Cautions alert you to an action that could damage
hardware or software.
WARNING: Warnings alert you to conditions that may affect
the safety of people.
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE xii
1. 4635 LPS overview
The Xerox 4635 Laser Printing System (LPS) is a versatile, highperformance printing system that processes and prints data from
a variety of sources. It enables host mainframe computers and
network-connected devices (such as workstations and graphic
scanners) to produce publications and other documents,
incorporating graphics, forms, logos, signatures, and a variety of
fonts.
With the 4635 LPS, management information systems (MIS) and
data processing (DP) environments have a high-performance
printer in which built-in intelligence eliminates the need for the
host computer to store and manage forms, fonts, and other
document resources.
Data is printed at a rate of up to 135 pages per minute (154 with
the optional Paper Feeding Enhancement Kit installed). A variety
of fonts ranging in size from 3 points to 36 points, in all four
orientations (portrait, inverse portrait, landscape, inverse
landscape), and many publishing typefaces are available to meet
your printing requirements. In addition to the standard set of
fonts that is delivered with the LPS, special or customized fonts
can be developed by the Xerox Font Center. Your sales
representative will provide you with further information.
The Xerox 4635MX Laser Printing System (LPS) is the same system
as the 4635 LPS with the addition of Magnetic Ink Character
Recognition (MICR) functionality. Except where explicitly stated,
all references in this document to the 4635 LPS apply to both the
4635 LPS and the 4635MX LPS.
The following material is presented in this chapter:
• Hardware and software components
• Options
• Specifications
• Features list
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE 1-1
4635 LPS OVERVIEW
4635 LPS
The standard 4635 LPS consists of two main components:
1. System controller
2. Printer.
Figure 1-1 shows the 4635 LPS with the optional bar code
device.
Figure 1-1. 4635 Laser Printing System
Software
The system controller is a minicomputer which manages the
processing of input data; processes operator commands;
provides for the entry and compiling of form, print, and job
description files; executes job processing commands; and
manages low-level control of the printer.
Your 4635 LPS has a PC user interface (PC UI) that enables you
to start and monitor print jobs. In figure 1-1, the PC UI is shown
on top of the system controller.
The printer contains the mechanics and electronics involved in
the imaging and paper handling processes. Touch screen control
on the printer control console allows you to easily monitor and
control printer functions. Jam clearance areas and instructions
are clearly displayed with color graphics.
For more detailed descriptions of the 4635 LPS hardware
components, refer to the “4635 LPS hardware components”
chapter.
LPS software functionally consists of several components to
manage printing system resources. Refer to the “System
software functional description” section of the “4635 LPS
software components” chapter for additional information.
Among these components are two LPS-resident languages: FDL
and PDL.
1-2 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Forms description language (FDL)
Print description language (PDL)
Options
4635 LPS OVERVIEW
(standard) FDL is a laser printing system resident language for designing
electronic forms which can include logos, signatures, and
shading. Form libraries (source and object) are stored on the
system disks. Refer to the Xerox 4635 LPS Forms Creation Guide
for more information.
(standard) PDL is a laser printing system resident language used to describe
the input, logical processing, and output requirements of a print
job. Refer to the Xerox 4635 LPS PDL/DJDE Reference for more
information.
The following options are available to further enhance the
capabilities of your 4635 LPS.
Note: For detailed information regarding these options, please
contact your sales representative.
9-track magnetic tape drive
18-track cartridge tape drive
Bypass transport
The 9-track (1600/6250) magnetic tape drive is an alternative or
additional offline capability to the 18-track cartridge tape drive for
inputting print and nonprint data to the 4635 LPS. (Refer to
figure 3-5.)
Refer to the Xerox 4635 LPS Operator Guide and to the LPS
Tape Formats Manual for additional information.
The 18-track cartridge tape drive is an alternative or additional
offline capability to the 9-track magnetic tape drive for inputting
print and nonprint data to the 4635 LPS. It reads and writes IBMand ANSI-compatible half-inch tape in the 18-track IBM 3480 data
format. There is also an option available which allows it to read
and print from the IBM 3490 format.
Refer to the Xerox 4635 LPS Operator Guide and to the LPS
Tape Formats Manual for additional information.
The bypass transport increases your production capabilities by
providing you with a means of using finishing devices with your
4635 LPS. Conforming to Xerox Document Feeding and
Finishing Architecture (DFA) Level 1 specifications, it allows you
to choose from a variety of finishers.
Input enablement device
The input enablement device provides the means to directly
connect bulk feeders to your 4635 LPS.
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE 1-3
4635 LPS OVERVIEW
5.25-inch floppy disk drive
Expanded disk memory
Expanded bitmap memory
Bar code reader
The 5.25-inch floppy disk drive is another means of downloading
or backing up files, such as fonts, to the 4635 system disk.
The 4635 has as a standard feature one 651 MB unformatted
system disk, and can support up to three additional 651 MB
unformatted system disks.
The 4635 has as a standard feature 32 Mbits of bitmap memory
that supports font and graphics. The bitmap memory can be
expanded to 256 Mbits.
The bar code reader adds a set of features that allow processing
of bar code data streams. A cross-checking mechanism allows
the 4635 to ensure that any bar code sheets printed have been
accounted for by each component of the software.
Raster image processor
LPS connection
Online interface The online channel interface receives input directly from the host
Offline interface The offline interface is an excellent alternative or addition to an
Raster image processor (RIP) performs vector to raster conversion
in support of the Interpress 3.0 Publication Set. It provides
multiple forms capability for any given page and permits printing
of text and image files which would otherwise be unprintable or
incomplete because of complexity. RIP allows you to use two
forms per page and more than 16 graphics on a page for
Interpress applications.
The 4635 may be ordered with the following optional
connections:
system. All IBM systems which support the channel-attached
3811/3211 or 4245 interface are supported. Non-IBM systems
are supported through a variety of connections such as DDI.
(Refer to the DDI description below.)
online operation. It supports 9-track (1600/6250 bpi) and 18track (3480 format) tapes conforming to one of the following
formats:
— American National Standards Institute (ANSI)
— IBM (OS/VS/370, OS/360, DOS/VS/370. DOS/360/370)
— Burroughs (MCP 2500-4700, 6700)
— Honeywell (OS 200/2000, OS 200/6000 series)
— Sperry/Univac Series 70 (1100-OS standard files
— DEC (RSX-11)
1-4 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
4635 LPS OVERVIEW
— CDC (external format)
— NCR (Century-B1)
— Tape input codes: EBCDIC, ASCII, BCD
— Interpress on tape
— Univac (SDF-formatted tapes)
— ICL (2900 VME/B)
Refer to the Xerox 4635 LPS Operator Guide and to the LPS
Tape Formats Manual for additional information.
DDI interface The Dynamic Document Interface (DDI) enables communication
between a 4635 LPS and other products via a shared disk
mechanism. The interface allows the other products (such as
DEC, PC, MAC, and UNIX local area network (LAN) workstations)
to save print files to an external hard disk. The 4635 LPS then
directly accesses the external hard disk to retrieve files for
printing. The DDI passes data over a high performance SCSI bus.
Ethernet interface Ethernet is the Xerox local area network (LAN) that allows data to
be transmitted by cable from one device to another. As an
Ethernet member, your LPS can receive and print from other
network “citizens” such as Ethernet workstations and graphic
scanners.
Ethernet workstations
With the Ethernet option, an LPS can receive and print input data
from workstations, such as the Xerox 8010, 6085, and the XPS
700 series. Workstations can transfer Interpress files using
Ethernet to the LPS and invoke LPS-stored forms and graphics for
printing.
Interpress is a page description language capable of describing
any two-dimensional image intended for a raster device, such as
a Xerox LPS. Its function is to describe previously created data
on a page; it is not a page composition language. This
functionality includes vector graphics (sometimes referred to as
line art), contour fonts, and pixel arrays. Interpress also includes
job management features such as paper tray selection, output
offsetting, stock selection, copy count, and page selection on a
copy basis.
An Interpress master can be created at a host or at a workstation
for transporting (offline or Ethernet modes) to the LPS.
Refer to the Xerox 4635 LPS Operations Reference and to the
workstation's documentation for more information.
Ethernet graphic scanners
With the Ethernet option, an LPS can receive and print scanned
graphic data (both line art and continuous tone images) from the
7650 Pro Imager (using the Xerox Publishing Illustrator's
Workstation).
Refer to the Xerox 4635 LPS Operations Reference and the Xerox
7650 Pro Imager Reference Manual for more information.
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE 1-5
4635 LPS OVERVIEW
4635 LPS specifications
Listed below are specifications for the 4635. For more
information on 4635 installation planning and specifications, refer
to the Xerox 4635 LPS Installation Planning Guide.
Equipment dimensions
Hardware Width Depth Height Weight
System controller
—with optional
peripheral
cabinet (fully loaded)
Printer
—with monitor and two
feeder/stacker
modules
—with monitor, two
feeder/stacker
modules, and
optional bypass
transport
—with monitor and
three feeder/
stacker modules
(one optional)
—with monitor and
four feeder/ stacker
modules (two
optional)
24 in./610 mm
48 in./1219 mm
151.2 in./3842 mm
170.2 in./4324 mm
183.5 in./4661 mm
215.8 in./5480 mm
28 in./712 mm
28 in./712 mm
35.9 in./711 mm
35.9 in./711 mm
35.9 in./711 mm
35.9 in./711 mm
38.2 in./970 mm
38.2 in./970 mm
59.6 in./1513 mm
59.75 in./1518 mm
59.6 in./1513 mm
59.6 in./1513 mm
300 lbs./136 kg
616 lbs./280 kg
2588 lbs./1174.9 kg
2768 lbs./1255.6 kg
3109 lbs./1411.9 kg
3630 lbs./1648.9 kg
Clearance requirements
System controller Requires 36 inch/914 mm clearance on each side.
Finishers and bulk feeders Finishers and bulk feeders attached to your bypass transport
Environmental requirements
Operating temperature 74° F ± 4° F/24° C ± 4° C (recommended)
Printer Requires 36 inch/914 mm clearance on each side. 50 inches/1270
mm required at front of printer.
require 36 inch/914 mm clearance on each side.
54° - 85° F/14° - 29° C (min-max)
Humidity 45% ± 10% (recommended)
15-85% (min-max)
1-6 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Heat dissipation, printer Operating: 28,140 Btu per hour
Standby: 4,454 Btu per hour
Heat dissipation, system controller 3,754 Btu per hour
Heat dissipation, optional peripheral
cabinet (fully configured) 3,195 Btu per hour
Electrical requirements
For more information on 4635 LPS electrical requirements,
including power cord and outlet specifications, refer to the Xerox
4635 LPS Installation Planning Guide.
System controller U.S./Canada, 60 Hz: 208/240 (1 phase) or 208/220 VAC
4635 LPS OVERVIEW
(line 1 to line 2)
15 amp service
NEMA 6-15R or ANSI C73, 20R
KVA 1.1 (operating)
International, 50 Hz: 200/230 VAC (1 phase)
15 amp service
Power connector per local codes
Printer U.S./Canada, 60 Hz: 120/240 VAC or 120/208 VAC
50 amp service
NEMA 14-50R
KVA 7.3 (operating)
International, 50 Hz: 380, 400, 415 VAC (3 phase, 5 wire)
(WYE): 20 amp service (WYE)
International, 50 Hz: 220, 230, 240 VAC (3 phase, 4 wire)
(DELTA): 30 amp service (DELTA)
Optional bypass transport The bypass transport uses the Printer module as its power
source, therefore all power requirements for the bypass transport
are satisfied by the 4635 LPS.
Optional peripheral cabinet U.S./Canada, 60 Hz: 208/240 VAC (1 phase) or 208/220
(line 1 to line 2)
15 amp service
NEMA 6 to 15R or ANSI C73, 20R
KVA .9 in both standby and operating
International, 50 Hz: 200/230 VAC (1 phase)
15 amp service
Power connector per local codes
Agency certification UL, CSA, IEC, VDE
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE 1-7
4635 LPS OVERVIEW
4635 LPS features
Listed below are features of the 4635 LPS.
LPS connection • Online interface for all IBM systems which support the
channel-attached 3811/3211 or 4245 interface
• Offline interface for any 9-track (1600/6250 bpi) or 18-track
cartridge tape conforming to one of the following formats:
— American National Standards Institute (ANSI)
— IBM (OS/VS/370, OS/360, DOS/VS/370. DOS/360/370)
— Burroughs (MCP 2500-4700, 6700)
— Honeywell (OS 200/2000, OS 200/6000 series)
— Sperry/Univac Series 70 (1100-OS standard files
— DEC (RSX-11)
— CDC (external format)
— NCR (Century-B1)
— Tape input codes: EBCDIC, ASCII, BCD
— Interpress on tape
— Univac (SDF-formatted tapes)
— ICL (2900 VME/B)
• Dynamic Document Interface (DDI) for network connected
devices sending Page Description Language (PDL), LCDS
print data, or Interpress data to the shared disk subsystem.
• Ethernet interface for network-connected devices sending
the XNS protocol.
Refer to the “Options” section of this chapter for more
information.
System controller • PC UI (refer below) or multinational terminal (non-U.S.
market option)
• One 651 MB unformatted system disk standard; up to three
additional optional disks (651 MB unformatted) available
• 1024K words of control memory
• 32 Mbits of font memory; expandable to 128 Mbits
• 5.25-inch floppy disk drive (optional Media Conversion Kit)
• Quarter-inch cartridge tape drive (QIC); up to 320 MB
capacity in streaming mode; quarter-inch ANSI (standard)
• Front loading 9-track (1600/6250 bpi) magnetic tape drive
(requires optional peripheral cabinet)
• Xerox 18-track cartridge tape drive; read/write capability for
IBM- and ANSI-compatible half-inch tapes in the 18-track IBM
3480 data format (requires optional peripheral cabinet).
PC UI • IBM-compatible 486 PC hardware; includes mouse pointing
device, 4 MB memory, 80-MB hard disk, 3.5-inch floppy disk
drive, 14-inch color monitor, multinational keyboard
• Color graphic windows and icons
• Full text editor allows you to perform complete textual
editing tasks (such as moving, searching and replacing,
1-8 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
adding and deleting text, and so on) on the entire file, within
a window environment
• File transfer provides a two-way file transfer between the PC
UI floppy or hard disk drive and the system controller hard
disk
• Start command library stores often-used start commands for
easy selection with mouse; no need to key in start
commands repeatedly
• Command line mode accessible from PC UI windows
• Console logging allows you to print, display, or save LPS
activity record for tracking or service purposes
• Multinational language and feature support.
Printer • Xerographic engine
• Laser raster scanning
• Optional bar code reader
• Rated speed of up to 135 pages per minute (up to 13,800
lines per minute) simplex; up to 68 pages per minute duplex
(with the optional Paper Feeding Enhancement Kit installed,
the rated speed for simplex is 154 pages per minute)
4635 LPS OVERVIEW
• Multiple-pitch feature allows the printer to change between
five pitch modes (from 3 pitch to 8 pitch), depending on the
paper size
• 300 spi input data interpolated to produce 600 spi output
print resolution
• Prints on front and back side (duplex) of paper under
software control
• Page inversion printing that allows the system to invert the
image on a physical page by 180 degrees
• Printer control console with color touch screen graphically
displays printer jam clearance information and allows control
of paper loading/unloading
• Stop, continue, and print sample buttons on printer control
console
• 100-sheet sample print tray using 20-pound/75-gsm bond
• Feeder trays:
Main tray 1 (Main) = 1100-sheet, 20-pound/75-gsm
paper
Auxiliary tray (tray 2) = 600-sheet, 20-pound/75-gsm
paper
• Feeder/stacker modules:
Each high-capacity = 2600 sheets of 20-pound/75feeder (HCF) tray gsm paper
(two standard and
two optional)
Each high-capacity = 2500 sheets of 20-pound/75stacker (HCS) bin gsm paper
(two standard and
two optional)
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE 1-9
4635 LPS OVERVIEW
• Attention light, located on top of the inverter-feeder/stacker
module, alerts operator when printer needs attention
• Attention alarm, located within the printer, alerts the operator
when the printer needs attention
• Screen saver on the printer monitor
Paper handling • 16-pound bond to 110-pound index/60-gsm to 200-gsm, cut-
sheet paper, colored, preprinted, predrilled, or preperforated
paper
• Variable paper sizes such as A3 (11.69 by 16.54 inches/297 by
420 mm, 11 by 17 inches/297 by 432 mm), B4 (10.12 by 14.3
inches/257 by 363 mm), and B5 (7.17 by 10.12 inches/182 by
257 mm)
• Transparencies, high-speed label stock, oversized covers, tab
stock, and other specialized application materials
• Software-controlled paper stock management with four
feeder trays
• Waste management and audit logging that allow more
control of sensitive paper stocks by increasing the amount of
information available with regard to how many sheets were
fed from which tray as well as the final destination of the
sheets.
Forms • Electronically created and stored at LPS or host
• Changeable on a page-to-page basis
• Functionally compatible with Xerox 9790/8790/4090/4050 LPS
forms, logos, and signatures
• Electronic form and variable data printed at the same time for
accurate registration
• Multiple forms per page with Interpress and RIP options
• Preprinted forms.
Fonts • Proportional or fixed character spacing
• Variable character size of 3 to 36 points
• Spacing of 4 to 30 characters per inch (cpi)
• Up to 128 fonts per page from extensive library of standard
and optional fonts
• 300 dots per inch (dpi) font data interpolated to produce 600
spi print resolution
• Logo and signature fonts
• Multinational character set
• Loadable from host, magnetic tape, or cartridge tape
• 32 Mbits font memory; expandable to 128 Mbits
• Selectable on a character-to-character basis.
Printed format • Variable spacing of 3 to 18 lines per inch (lpi)
• Spacing of 4 to 30 characters per inch (cpi)
1-10 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
• Landscape or portrait orientation
• Up to 38K alphanumeric characters per 8.5 by 14-inch/216 by
356 mm page total variable density
• 252 maximum lines per 8.5 by 14 inch/216 by 356 mm
portrait page; 198 (5 points, 18 lpi) maximum lines per 8.5 by
11-inch/216 by 279 mm landscape page
• Up to 150 lines with 132 characters per line on 8.5 by 11inch/216 by 279 mm landscape page
• Up to 16 images per page; over 16 images per page and
vector graphics capability with Interpress and RIP
• Multiple logical pages on a physical page
• Simplex or duplex printing.
Types of output • Interspersed reports
• Stacked reports
• Multiple sets
• Offsetting
4635 LPS OVERVIEW
• Report and job accounting
• Collated or uncollated.
XEROX 4635 LASER PRINTING SYSTEM LPS PRODUCT REFERENCE 1-11
LPS overview
2. Basic concepts
This chapter introduces basic concepts associated with a Xerox
Laser Printing System (LPS). Major sections in this chapter cover
the following topics:
• LPS overview
• LPS production process overview
• Fonts.
The 4635 LPS provides innovative solutions for a variety of
business requirements. It consists of two separate units:
• System controller
• Printer.
Figure 2-1 shows the 4635 LPS with the optional bar code
device. Refer to the “4635 LPS hardware components” chapter
for further information on available options.
Figure 2-1. 4635 Laser Printing System
1. System controller
2. Printer
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE 2-1
BASIC CONCEPTS
System controller
The system controller contains the input subsystem and the
control subsystem electronics.
The input subsystem provides interfacing capability (online,
offline, Ethernet, and Dynamic Document Interface (for DEC, PC,
MAC, and UNIX LAN connectivity) for a variety of input sources
(host, magnetic tape, workstations, and graphic scanners).
Note: Your quarter-inch cartridge tape and floppy disk drives are
not input sources for print jobs (refer to the “4635 LPS hardware
components” chapter).
The control subsystem performs all data handling, formatting,
buffering, and operational control of the system. It also provides
operator control through the LPS terminal or PC User Interface
(UI). Refer to the “4635 LPS hardware components” chapter for
more information on system controller components and these
subsystems.
LPS interfaces
The following LPS interfaces are available to connect a variety of
input sources to the LPS:
Offline interface The offline interface permits input from a computer-prepared
magnetic tape which is loaded onto the magnetic tape drive.
The 9-track and 18-track magnetic tape drives are the optional
offline interfaces available for the 4635 LPS. Refer to the “4635
LPS hardware components” chapter for more information.
Online interface The online interface permits input from a channel-attached host
computer.
Ethernet interface The Ethernet interface, using the host interface processor (HIP)
task, permits input from workstations or graphic scanners on a
shared or an unshared, but accessible, network.
DDI interface The Dynamic Document Interface (DDI) enables communication
between a 4635 LPS and network via a shared disk mechanism
over a SCSI bus. Refer to the Xerox Dynamic Document
Interface Operator Guide for information regarding the DDI.
LPS system disk storage and memory
The system disks store the operating system software (OSS) as
well as the system resources (fonts, forms, and graphics) that are
to be loaded into memory for use during input processing. Refer
to the “LPS software components” chapter for more information
on OSS.
2-2 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Printer
BASIC CONCEPTS
The printer contains the imaging, xerographic, and output
subsystems.
Imaging subsystem
The imaging subsystem accepts a formatted page of data from
the system controller (forms and graphics have already been
merged) for the xerographic process:
Xerographic subsystem
One of the important keys to LPS print quality lies in the
xerographic process itself. The print image produced by the dry
ink is very dark to create more contrast between the printing and
the page, making images easier to read.
The following steps describe the xerographic process:
1. A band full of video data (1s and 0s) is transferred from the
band buffer to the laser scanner.
2. The laser beam moves across the surface of the
photoreceptor belt based on the value of the incoming bit (1
or 0), producing a latent image.
In this step, a charge is applied to the surface of the
photoreceptor belt. The surface is discharged when it is
exposed to the laser beam, thus creating a pattern of dots
corresponding to the page that is to be printed.
3. The photoreceptor belt is then exposed to dry ink. The dry
ink clings to the pattern of dots corresponding to the page
that is to be printed.
4. A sheet of paper traveling along the paper path is brought
into contact with the surface of the photoreceptor belt. The
dry ink is then transferred from the photoreceptor belt onto
the paper.
5. The paper carrying the pattern of dots passes through a
fusing mechanism that permanently affixes the dry ink to the
paper.
6. The finished page is deposited in the output tray or bin. The
data from that page is erased from memory. The
photoreceptor belt is then cleaned and prepared for the next
page.
Resolution An LPS imaging system converts a character from digitized form
into a printed image composed of tiny dots. These dots are so
small and close together that they appear to form solid black
areas. Image clarity is determined largely by the resolution or the
number of dots per inch printed. Within the 4635 LPS Reference
Set, the terms spots, dots, and pixels are used interchangeably.
The 4635 accepts 300 dots per inch (dpi) print data and images
and electronically modifies them to produce 600 dpi print
resolution. 600 dpi input print data is not accepted by the 4635
for printing. References to 300 dpi or 600 dpi apply to both
coordinate axes (300 by 300 dpi or 600 by 600 dpi).
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE 2-3
BASIC CONCEPTS
LPS production process overview
Output subsystem
The output subsystem provides paper stacking, report collating,
and sample print capabilities.
As illustrated in figure 2-2 below, the process of producing a job
on an LPS can be broken down into three distinct phases: input,
special processing, and output.
Figure 2-2. Basic processing flow
Input
Each phase is described in the text that follows.
The input phase of job production begins with the collecting and
inputting of data using one of the following sources.
Sources of input for the LPS
Several data input methods are available, as shown in figure 2-3.
2-4 XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE
Figure 2-3. 4635 input options
BASIC CONCEPTS
Online The channel-attached host computer input is received by the LPS
online interface. In an online environment, the system controller
is physically wired to the host computer. The host computer
“thinks” it is communicating with an IBM 3211 line printer and an
IBM 3811 printing system controller, or an IBM 4245 line printer.
DDI interface The Dynamic Document Interface (DDI) enables communication
between a 4635 LPS and network via a shared disk mechanism
over a SCSI bus. Refer to the Xerox Dynamic Document
Interface Operator Guide for information regarding the DDI.
Offline Magnetic tape input (9- or 18-track) is received by the offline
interface. The LPS Tape Formats Manual describes the tape
format and encryption schemes which a Xerox LPS recognizes.
Ethernet Input from workstations, such as the Xerox 6085, and graphic
scanners, such as the 7650 Pro Imager (using XPIW), is received
by the Ethernet interface using the HIP task.
XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE 2-5
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