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Printer Operation
CUPS is the standard print system in SUSE® Linux Enterprise. CUPS is highly user-
oriented. In many cases, it is compatible with LPRng or can be adapted with relatively
little effort. LPRng is included in SUSE Linux Enterprise only for reasons of compati-
bility.
Printers can be distinguished by interface, such as USB or network, and printer language.
When buying a printer, make sure that the printer has an interface that is supported by
the hardware and a suitable printer language. Printers can be categorized on the basis
of the following three classes of printer languages:
PostScript Printers
PostScript is the printer language in which most print jobs in Linux and Unix are
generated and processed by the internal print system. This language is already quite
old and very efficient. If PostScript documents can be processed directly by the
printer and do not need to be converted in additional stages in the print system, the
number of potential error sources is reduced. Because PostScript printers are subject
to substantial license costs, these printers usually cost more than printers without
a PostScript interpreter.
Standard Printer (languages like PCL and ESC/P)
Although these printer languages are quite old, they are still undergoing expansion
to address new features in printers. In the case of known printer languages, the
print system can convert PostScript jobs to the respective printer language with the
help of Ghostscript. This processing stage is referred to as interpreting. The best-
known languages are PCL, which is mostly used by HP printers and their clones,
and ESC/P, which is used by Epson printers. These printer languages are usually
supported by Linux and produce a decent print result. Linux may not be able to
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Printer Operation
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Troubleshooting
