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fax2ps reads one or more TIFF
facsimile image files and prints a compressed form of
PostScript on the standard output that is suitable for
printing.
By default, each page is scaled to reflect the image
dimensions and resolutions stored in the file. The
−x and −y options can be used to
specify the horizontal and vertical image resolutions
(lines/inch), respectively. If the −S option is
specified, each page is scaled to fill an output page. The
default output page is 8.5 by 11 inches. Alternate page
dimensions can be specified in inches with the
−W and −H options.
By default fax2ps generates PostScript for all
pages in the file. The −p option can be used to
select one or more pages from a multi-page document.
fax2ps generates a compressed form of PostScript
that is optimized for sending pages of text to a PostScript
printer attached to a host through a low-speed link (such as
a serial line). Each output page is filled with white and
then only the black areas are drawn. The PostScript
specification of the black drawing operations is optimized
by using a special font that encodes the move-draw
operations required to fill the black regions on the page.
This compression scheme typically results in a substantially
reduced PostScript description, relative to the
straightforward imaging of the page with a PostScript
image operator. This algorithm can, however, be
ineffective for continuous-tone and white-on-black images.
For these images, it sometimes is more efficient to send the
raster bitmap image directly; see tiff2ps(1).
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