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

5-6 Job Separation Commands EN
Example: Using the JOB Command to Monitor
Job Status
This example demonstrates a PostScript print job that is spooled
before printing. The job actually consists of three separate sections
(notice the UEL commands that bound the three sections—the first
section does not need a closing UEL command since the printer is
already in PJL mode):
• The first section is sent by the spooler. These lines name the
print job and send the USTATUS command so the spooler can
monitor job status.
• The next section is a PostScript job sent to the spooler from a
software application.
• The last section is sent by the spooler to end the job. When the
last page is completely printed (in the output tray), the printer
returns unsolicited status information notifying the spooler that
the job is complete.
<ESC%>-12345X@PJL <CR><LF>
@PJL COMMENT **Beginning of Job ** <CR><LF>
@PJL JOB NAME = "TF's Monitor Job" <CR><LF>
@PJL USTATUS JOB = ON <CR><LF>
<ESC>%-12345X@PJL <CR><LF>
@PJL ENTER LANGUAGE = POSTSCRIPT <CR><LF>
%!PS-ADOBE .. PostScript print job ... ^D
~<ESC>%-12345X
~<ESC>%-12345X@PJL <CR><LF>
@PJL EOJ NAME = "End of TF's Job" <CR><LF>
<ESC>%-12345X
Note If the spooler received a print job that did not use PJL (that is, the
application generated a print job that consisted of just “%!PS-ADOBE
.. PostScript print job ... ^D”, a LaserJet printer using context-sensitive
switching would still print properly (provided PostScript is installed)
and the spooler would still receive the unsolicited job status
information.