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

EN Product-Specific Feature Support A-51
LaserJet Printers with Reduced-Function
Control Panels
HP LaserJet 4L, 4LJ Pro, 4ML, 4LC, 5P, 6P, 6MP, 5L, 6L and 1100
series printers have no control panel to specify printer settings. These
printers have several features that are different than those of other
PJL printers. This section describes those differences and how they
affect the use of PJL.
• No device attendance commands are supported—these
printers rely on unsolicited status to inform the user.
•No NVRAM (HP LaserJet 4L/5L/6L only)—because these
printers are designed to conserve energy and do not have a
power switch, they are never turned off. Therefore, they do not
need NVRAM to store feature settings. To simulate a power
cycle, use the RESET command to initialize all PJL variables
except PAPERSIZE.
• For the LaserJet 1100 series printers, the RESET command
does not initialize the PAGECOUNT, SYMSET, and PAPER
variables. Instead, it sets the current value equal to the stored
default value.
• For the LaserJet 1100 series printers, the INITIALIZE
command does not reset the PJL variables stored in NVRAM
back to the factory values. It sets their current values to the
stored default values.
• No multiple I/Os or job boundaries supported (LaserJet
4L/5L/6L/1100 series only)—these printers are designed for
single-user environments. They do not support I/O switching or
the concept of job boundaries. Therefore, the JOB and EOJ
commands are not supported.
• No multiple language support (LaserJet 4L/5L/6L only)—there
is no support for multiple printer languages. PCL 5 is the sole
printer language. Even though there is only one language, use
the PJL ENTER LANGUAGE command to specify PCL.
•EconoMode—a toner-saving feature that produces draft-like
pages when top-quality printing is not necessary.