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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta name="Content-Style" content="text/css">
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<title>FAX2PS</title>
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</head>
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<body>
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FAX2PS
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NAME
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SYNOPSIS
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DESCRIPTION
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OPTIONS
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DIAGNOSTICS
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NOTES
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BUGS
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SEE ALSO
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NAME
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cols="2" cellspacing="0" cellpadding="0">
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fax2ps − convert a <small>TIFF</small> facsimile to
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compressed PostScript™
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SYNOPSIS
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cols="2" cellspacing="0" cellpadding="0">
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fax2ps [ options ] [ file ... ]
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DESCRIPTION
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cols="2" cellspacing="0" cellpadding="0">
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fax2ps reads one or more <small>TIFF</small>
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facsimile image files and prints a compressed form of
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PostScript on the standard output that is suitable for
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printing.
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By default, each page is scaled to reflect the image
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dimensions and resolutions stored in the file. The
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−x and −y options can be used to
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specify the horizontal and vertical image resolutions
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(lines/inch), respectively. If the −S option is
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specified, each page is scaled to fill an output page. The
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default output page is 8.5 by 11 inches. Alternate page
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dimensions can be specified in inches with the
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−W and −H options.
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By default fax2ps generates PostScript for all
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pages in the file. The −p option can be used to
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select one or more pages from a multi-page document.
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fax2ps generates a compressed form of PostScript
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that is optimized for sending pages of text to a PostScript
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printer attached to a host through a low-speed link (such as
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a serial line). Each output page is filled with white and
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then only the black areas are drawn. The PostScript
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specification of the black drawing operations is optimized
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by using a special font that encodes the move-draw
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operations required to fill the black regions on the page.
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This compression scheme typically results in a substantially
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reduced PostScript description, relative to the
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straightforward imaging of the page with a PostScript
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image operator. This algorithm can, however, be
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ineffective for continuous-tone and white-on-black images.
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For these images, it sometimes is more efficient to send the
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raster bitmap image directly; see tiff2ps(1).
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OPTIONS
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cols="4" cellspacing="0" cellpadding="0">
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−p number
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Print only the indicated page. Multiple pages may be
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printed by specifying this option more than once.
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cols="2" cellspacing="0" cellpadding="0">
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−x resolution
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cols="2" cellspacing="0" cellpadding="0">
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Use resolution as the horizontal resolution, in
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dots/inch, of the image data. By default this value is taken
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from the file.
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cols="2" cellspacing="0" cellpadding="0">
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−y resolution
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cols="2" cellspacing="0" cellpadding="0">
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Use resolution as the vertical resolution, in
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lines/inch, of the image data. By default this value is
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taken from the file.
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cols="4" cellspacing="0" cellpadding="0">
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−S
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Scale each page of image data to fill the output page
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dimensions. By default images are presented according to the
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dimension information recorded in the <small>TIFF</small>
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file.
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−W width
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Use width as the width, in inches, of the output
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page.
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−H height
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Use height as the height, in inches, of the
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output page.
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DIAGNOSTICS
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cols="2" cellspacing="0" cellpadding="0">
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Some messages about malformed <small>TIFF</small> images
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come from the <small>TIFF</small> library.
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Various messages about badly formatted facsimile images
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may be generated due to transmission errors in received
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facsimile. fax2ps attempts to recover from such data
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errors by resynchronizing decoding at the end of the current
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scanline. This can result in long horizontal black lines in
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the resultant PostScript image.
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NOTES
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cols="2" cellspacing="0" cellpadding="0">
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If the destination printer supports PostScript Level II
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then it is always faster to just send the encoded bitmap
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generated by the tiff2ps(1) program.
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BUGS
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cols="2" cellspacing="0" cellpadding="0">
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fax2ps should probably figure out when it is doing
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a poor job of compressing the output and just generate
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PostScript to image the bitmap raster instead.
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SEE ALSO
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cols="2" cellspacing="0" cellpadding="0">
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tiff2ps(1), libtiff(3)
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Libtiff library home page:
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http://www.simplesystems.org/libtiff/
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</body>
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</html>
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