The Benefits Of Pjl; Who Should Use Pjl - HP Color LaserJet 5500 Technical Reference Manual

The Benefits of PJL

Who Should Use
PJL?
Listed below are some of the benefits PJL provides:
Programmatic printer language switching. PJL
provides fully reliable switching between printer
languages, such as PCL, Epson, IBM ProPrinter, and
PostScript, directly from within applications.
Printer status readback. Printer model information,
configuration, printer feature settings, and other printer
status information can be obtained using PJL.
Programmatic front panel control. Control panel
settings, including control panel messages, can be
changed remotely.
Ease of use. All PJL commands except the Universal
Exit Language (UEL) command consist of printable
characters and plain-English words or abbreviated
words. Learning to use PJL can be accomplished by
reading the first three chapters of this manual and
following the examples provided in the text.
Better spooler control. PJL allows spoolers improved
printer management, especially in a network
environment.
PJL is designed to be used by experienced programmers,
such as software application developers and technical
support personnel. Although PJL is not complicated, it is a
powerful tool, and should be used only by experienced users
who can create jobs that cause no adverse effects on other
jobs in a shared environment. Applications containing PJL
commands used as described in this manual provide users
with smooth transitions between print jobs. Conversely,
improperly used PJL commands can create problems in
multi-user printing environments.
Introduction to PJL 1-3