Xerox 4213 manual PCL4 command structure, Cartridge fonts

LJ SERIES 2D EMULATION

Cartridge fonts

Please refer to the Xerox 4213 Laser Printer User Guide for the cartridges that can be used by the LJ 2D emulation. Cartridges are listed by part number.

Font cartridges must be installed while the 4213 is powered off. Font cartridges installed while the printer is on are not recognised, and may lock up the printer.

PCL4 command structure

The LJ series 2D emulation uses a set of commands similar to the Printer Command Language (PCL) used to control the HP LaserJet printers (HP LaserJet, HP LaserJet+, and HP LaserJet 500+, HP Laserjet II and IID).

There are two types of commands:

·Control codes

·Escape sequences.

Control codes

Control codes are single-byte commands which perform simple functions such as backspace, carriage return, line feed, and form feed.

In most cases control codes are taken from the unprintable part of the ASCII character set which covers the decimal values from 0 to 31 (hexadecimal 00 to 1F). If a character set includes printable characters with values below decimal 31, the Transparent Data command (E &p#X) may be used to access the characters.

Control codes usually elicit an immediate response from the printer and do not perform any deferred or preparatory functions. The only exception is the escape character (hexadecimal 1B, decimal 27), which is prefixed to a command to tell the printer that the data which follows is a command to be executed and not text to be printed.

XEROX 4213 LASER PRINTER PROGRAMMER REFERENCEE 3-9