This chapter describes the commands providing job control. Job control commands are usually grouped together and sent at the beginning of a job. Page control commands and data are associated with each printed page of a job. Job control commands include the following:

zPrinter Reset.

zUniversal End of Language/Start of PJL.

zNumber of Copies.

zSimplex/Duplex Print.

zLeft and Top Offset Registration.

zDuplex Page Side Selection.

zJob Separation.

zOutput Bin Selection.

zUnit of Measure.

Printer Reset Command

 

Receipt of the Printer Reset command restores the User Default

 

Environment, deletes temporary fonts, macros, user-defined symbol

 

sets and patterns. It also prints any partial pages of data which may

 

have been received.

 

? E

 

 

Notes

Hewlett-Packard strongly recommends the use of both the ? E

 

command and the ?%–12345Xcommand (Universal Exit

 

Language/Start of PJL — also referred to as the UEL Command) at

 

the beginning and end of each job. (The order of these commands is

 

critical. Refer to Table 4-1 for an example.)

 

The UEL Command (?%–12345X) has the same effect as the ? E

 

command, and also enters PJL Mode of operation for printers that

 

support PJL (refer to the next section, "“Universal Exit Language

 

Command” for more information). The ? E command should be

 

included to ensure backward compatibility (the UEL command is

 

ignored if received by a printer that does not support PJL).

 

 

4-2PCL Job Control Commands

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HP 5961-0509 manual Printer Reset Command, 2PCL Job Control Commands