While the URL Label server was designed to support printing of labels, it became obvious it could also route print jobs in a similar fashion. So that functionality was added.
HP LaserJet printers
PCL is the printer format used by Hewlett-Packard LaserJet, OfficeJet,
and DeskJet printers, which are page not label printers.
To print, our software typically writes PCL formatted print jobs and
then sends them to HP LaserJet printers.
While the print job feature of the URL Label server is oriented
towards HP printers, it could be modified to support other types
of page printers.
Communication with modern HP LaserJet printers is typically done over a network using Ethernet. Some communicate via USB cable, but almost none use a parallel cable anymore. At this time only Ethernet is being supported, but locally connected USB and parallel can be added if needed.
printers.txt
The list of available page printers is configured by editing
the file printers.txt in the URL Label server folder.
There are three types of lines that can be in printers.txt:
printer list
The list of page printers can be viewed from two locations.
On the About page there is a section listing the available page printers.
Also, when the URL Label server is started it shows the printer list
just above the label printer.
urllabcl client
The URL Label client command is used to submit print jobs for routing
by the URL Label server. Use the following syntax:
...>urllabcl -print=name ipAddress < printFile