Xerox 721P83071 用户手册

BASIC CONCEPTS

Ethernet is the Xerox local area network (LAN) which allows data
to be transmitted by cable from one device to another on a
shared or an unshared, but accessible, network.  

Data is created at one of the above sources and transmitted to
the LPS.  As mentioned previously (refer to the “LPS overview”
section in this chapter), the system controller receives the
incoming data using one of the interfaces for processing.  If the
input is print data, a stream of data is sent to the printer for
imaging.  If the input is nonprint data, it is stored on the system
disks.  

The following types of data can be printed by an LPS: 

•

Variable data 

•

Fixed (forms) data 

•

Graphic data (usually merged with variable data or form data).

Variable data changes from page to page; for example, the text
in this document or the numbers in a financial report.  

Fixed (forms) data (FRM file) remains constant from page to page
(for example, letterheads and column headings).  Forms data
usually refers to information found on preprinted forms or
overlays.  

Note:  A host-resident forms design software package, such as
HFDL, is required for form generation at a host. 

Any form suitable for computer printout can be described and
entered into system storage.  Once stored on the system, a form
can be activated by referencing the form's name in the job
source library (JSL) file or job descriptor entry (JDE). 

All Xerox laser printing systems have as a standard feature a line
editor utility for the creation and modification of program source
files (FSL and JSL extension files).  Refer to the Xerox 4635 LPS
Operations Reference for more information on the LPS Editor.  

Forms are entered into the system as data using the LPS Editor.
They are described using forms description language (FDL)
commands to design the form for variable data.  These
commands create what is referred to as a forms source library
(FSL) file which, when compiled, becomes an FRM file.  Refer to
the Xerox LPS Forms Creation Guide for more information on
creating electronic forms.  

Graphic data (IMG file) refers to digitized images (both line art
and continuous tone images) that are to be merged with variable
or forms data.  Sources of graphic data include (but are not
limited to): (1) graphic data generated by XPPI/XDGI host-resident
software, and (2) scanned images from the Xerox 7650 Pro
Imager (using XPIW).

Special processing features distinguish the Xerox LPS from an
impact printer.  By using commands such as RFEED, ROFFSET,
and RPAGE you can specify that certain logical functions

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XEROX 4635 LASER PRINTING SYSTEM PRODUCT REFERENCE