LJ SERIES 2D EMULATIONCartridge fontsPlease refer to the Xerox 4213 Laser Printer User Guide for thecartridges that can be used by the LJ 2D emulation. Cartridgesare listed by part number.Font cartridges must be installed while the 4213 is powered off.Font cartridges installed while the printer is on are notrecognised, and may lock up the printer.PCL4 command structureThe LJ series 2D emulation uses a set of commands similar to thePrinter Command Language (PCL) used to control the HPLaserJet printers (HP LaserJet, HP LaserJet+, and HP LaserJet500+, HP Laserjet II and IID).There are two types of commands:• Control codes• Escape sequences.Control codesControl codes are single-byte commands which perform simplefunctions such as backspace, carriage return, line feed, and formfeed.In most cases control codes are taken from the unprintable partof the ASCII character set which covers the decimal values from0 to 31 (hexadecimal 00 to 1F). If a character set includesprintable characters with values below decimal 31, theTransparent Data command (E &p#X) may be used to access thecharacters.Control codes usually elicit an immediate response from theprinter and do not perform any deferred or preparatoryfunctions. The only exception is the escape character(hexadecimal 1B, decimal 27), which is prefixed to a command totell the printer that the data which follows is a command to beexecuted and not text to be printed.XEROX 4213 LASER PRINTER PROGRAMMER REFERENCEE 3-9
