How To Use Pjl; Overview; Pjl Job Requirement - Brother HL-Series Technical Reference Manual

Revision C 16/01/96

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

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 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.
PCL Job PJL Code
Chapter 3 "PJL" - 8
Postscript Job PJL Code