quick reference guide to GDI, PCL and Postscript printing for photocopiers
- GDI print emulation
(or UFRII for Canon photocopiers). GDI
is short for Graphics Device interface and is exclusively
used by Microsoft Windows products, this means only windows
applications can print or send to GDI enabled devices. Generally
if you are using a different operating system you will not be
able to use this type of print system. GDI printing essentially
borrows the host computers processing power to render and prepare
the image for printing. GDI printing is often slower and usually
lacks the advanced functions of PCL.
- PCL print emulation.
PCL is short for
Printer Command Language and is the industry standard
for general printing. PCL will work with most operating systems
and is usually able to be configured to use all the available
functions of the printer or copier. Functions like selection
of different paper trays, duplex (double siding), staple sort
and collate to name but a few. There are many versions
of PCL and this is because it has evolved to keep pace with
the latest print systems and technology.
- Adobe Postscript emulation.
is an advanced printer language that is usually used when a
high quality graphic and text output is required. GDI and PCL
printing will produce a lower quality image, or may not be able
to produce a certain font, especially on networked machines.
Most printers and copiers need to be postscript enabled with
a card or PCB, as well as the postscript driver on a computer
to allow postscript printing.