General PJL Environment Variables
Variable Description Sample Value
Range
BITSPERPIXEL For PCL 6 only, this variable controls the
number of bits per pixel used when printing
grayscale or color images. The valid values are
dependent on the current setting of RESOLU-
TION. If RESOLUTION is 300 or 1200, the
only valid BITSPERPIXEL value is 1. If
RESOLUTION is 600, the only valid BITSPER-
PIXEL values are 1 and 2. For FastRes 1200
printing, first set the RESOLUTION to 600
and then set BITSPERPIXEL to 2. For ProRes
1200, first set the RESOLUTION to 1200 and
then set BITSPERPIXEL to 1.
2, 1
CLEARABLE-
WARNINGS
Returns the configuration for displaying
clearable warnings (non-fatal error messages
cleared by pressing the Continue key.) If the
value is set to JOB, then clearable warnings
generated by a job are displayed only until the
start of the next job. If the value is ON, then
clearable warnings are displayed until the user
presses the Continue key.
JOB, ON
CONTEXT-
SWITCH
Enables/disables the use of implicit personality
switching. If a job is sent without an ENTER
LANGUAGE command, the printer looks for
context clues to determine which personality
takes effect. When the personality is changed,
memory is reconfigured and all downloaded
fonts, PCL macros, and PostScript dictionaries
are lost (however, no I/O data is lost).
ON, OFF
COPIES Number of uncollated copies for each page of
the job.
1 to 999
COURIER Sets the version of the Courier font. REGULAR, DARK
6-12 Environment Commands
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