pnm2ppa is a reverse-engineered driver for
HP's discontinued line of "Windows-only" PPA
("Printer Performance Architecture") DeskJet
printers. These include the HP710C/712C,
720C/722C, 820Cse/820Cxi, and
1000Cse/1000Cxi models, which do not use
the usual PCL protocol as other DeskJet
models do. pnm2ppa accepts PNM (pbm, pgm,
and ppm format) input, such as that created by
Ghostscript, SANE, or XV, and sends the PPA
protocol output to the printer.
