CHAPTER 5 PJL - 8
2. HOW TO USE PJL
2.1. Overview
PJL resides "above" printer languages such as Postscript and PCL. Each job can be distinguished from the
other jobs by PJL, and it can switch between PJL commands and printer language commands for each job.
PJL Code PCL Job PJL Code Postscript Job PJL Code
2.2. PJL Job Requirement
Some conditions are required in order for PJL commands to work correctly. Jobs which follow these
conditions will work correctly with a PJL printer in both single user and network environments.
All PJL jobs must begin and end with a UEL command.
The @PJL prefix must be placed immediately after the UEL command which starts PJL jobs, and can be
followed by <CR> and <LF>. Characters, including control characters, must not be placed between the
UEL command and the @PJL prefix.
Nothing must be placed after the UEL command which ends a PJL job.
<LF> is required to terminate all PJL commands. <CR> can be placed before <LF>, however, <CR> is
optional and is ignored.
Blank lines must not exist. If a blank line is required, the @PJL <CR><LF> line can be used.
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