DragonFly On-Line Manual Pages

FAX2PS(1)              DragonFly General Commands Manual             FAX2PS(1)

NAME
       fax2ps - convert a TIFF facsimile to compressed PostScripttm

SYNOPSIS
       fax2ps [ options ] [ file ... ]

DESCRIPTION
       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).

OPTIONS
       -p number Print only the indicated page.  Multiple pages may be printed
                 by specifying this option more than once.

       -x resolution
                 Use resolution as the horizontal resolution, in dots/inch, of
                 the image data.  By default this value is taken from the
                 file.

       -y resolution
                 Use resolution as the vertical resolution, in lines/inch, of
                 the image data.  By default this value is taken from the
                 file.

       -S        Scale each page of image data to fill the output page
                 dimensions.  By default images are presented according to the
                 dimension information recorded in the TIFF file.

       -W width  Use width as the width, in inches, of the output page.

       -H height Use height as the height, in inches, of the output page.

DIAGNOSTICS
       Some messages about malformed TIFF images come from the TIFF library.

       Various messages about badly formatted facsimile images may be
       generated due to transmission errors in received facsimile.  fax2ps
       attempts to recover from such data errors by resynchronizing decoding
       at the end of the current scanline.  This can result in long horizontal
       black lines in the resultant PostScript image.

NOTES
       If the destination printer supports PostScript Level II then it is
       always faster to just send the encoded bitmap generated by the
       tiff2ps(1) program.

BUGS
       fax2ps should probably figure out when it is doing a poor job of
       compressing the output and just generate PostScript to image the bitmap
       raster instead.

SEE ALSO
       tiff2ps(1), libtiff(3)

       Libtiff library home page: http://www.simplesystems.org/libtiff/

libtiff                        November 2, 2005                      FAX2PS(1)