HP PCL/PJL reference - Printer Job Language Technical Reference Manual

A-52 Product-Specific Feature Support EN
Color LaserJet Printer Comments
The Color LaserJet printer supports context-sensitive language
switching, true end-of-job notification, job boundary recognition, and
automatic I/O switching. See the PJL Feature Support table in the
beginning of this chapter for a list of the PJL features supported. Note
that the SET and INQUIRE commands are limited to only being used
with the RET variable.
HP DeskJet 1200C and 1600C Printer Family
Comments
This sections explains some important points that should be
considered when using PJL with the DeskJet 1200C and 1600C
family printers. Support for the features described in this section
varies. The HP DeskJet 1200C and 1600C family printers that
support a particular feature are listed at the beginning of each feature
description.
Printer Language Switching
Printers that perform context switching automatically switch printer
languages when both of the following conditions are met:
• For the DeskJet 1200C and 1200CM: when the rear panel DIP
switch is set in the “Context On” position.
• For the DeskJet 1600C and 1600CM: when the PJL
“CONTEXTSWITCH” environment variable is set to ON.
• The print job contains printable data but does not contain a
PJL ENTER LANGUAGE command immediately before the
printable data.
Under these conditions, the printer samples the incoming printable
data and looks for indications of a particular printer language. Once it
recognizes the printer language, the printer backs up to the beginning
of the sampled print data and switches to the printer language
determined to be most appropriate. Then the printer begins to parse
the data in the newly selected printer language.
Printers that support printer language switching:
HP DeskJet 1200C, 1200CM, 1600C, 1600CM