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Ppmtopjxl User Manual
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PPMTOPJXL
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Updated: 14 March 1991
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Table Of Contents
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NAME
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ppmtopjxl - convert a PPM image to an HP PaintJet XL PCL file
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SYNOPSIS
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ppmtopjxl 
[\fB-nopack\fR] 
[\fB-gamma\fR \fIn\fR] 
[\fB-presentation\fR] 
[\fB-dark\fR] 
[\fB-diffuse\fR] 
[\fB-cluster\fR] 
[\fB-dither\fR] 
[\fB-xshift\fR \fIs\fR] 
[\fB-yshift\fR \fIs\fR] 
[\fB-xshift\fR \fIs\fR] 
[\fB-yshift\fR \fIs\fR] 
[{\fB-xsize\fR|\fB-width\fR|\fB-xscale\fR} \fIs\fR] 
[{\fB-ysize\fR|\fB-height\fR|\fB-yscale\fR} \fIs\fR] 
[\fIppmfile\fR]
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DESCRIPTION
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This program is part of Netpbm.
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\fBppmtopjxl\fR reads a PPM image as input and produces a PCL file
suitable for printing on an HP PaintJet XL printer as output.
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The generated file is not suitable for printing on a normal
PrintJet printer.  The \fB-nopack\fR option generates a file which
does not use the normal TIFF 4.0 compression method. This file might
be printable on a normal PaintJet printer (not an XL).
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The \fB-gamma\fR option sets the gamma correction for the
image. The useful range for the PaintJet XL is approximately 0.6 to
1.5.
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You an alter the rendering algorithm used for images with the
\fB-dither,\fR \fB-cluster,\fR and \fB-diffuse\fR options.  These
options select ordered dithering, clustered ordered dithering, or
error diffusion respectively.  You can use the \fB-dark\fR option to
enhance images with a dark background when they are reduced in size.
The \fB-presentation\fR option turns on presentation mode, in which
two passes are made over the paper to increase ink density.  You
should use this only for images where quality is critical.
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You can resize the image by setting the \fB-xsize\fR and
\fB-ysize\fR options.  The parameter to either of these options is
interpreted as the number of dots to set the width or height to, but
you may append an optional dimension of `\fBpt\fR' (points),
`\fBdp\fR' (decipoints), `\fBin\fR' (inches), or `\fBcm\fR'
(centimetres).  If you specify only one dimension, \fBppmtopjxl\fR
will scale the other one appropriately.
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The options \fB-width\fR and \fB-height\fR are synonyms of
\fB-xsize\fR and \fB-ysize.\fR
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You can alternatively use the \fB-xscale\fR and \fB-yscale\fR
options to scale the image by a simple factor.
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You can shift the image on the page with the \fB-xshift\fR and
\fB-yshift\fR options.  These move the image the specified dimensions
right and down.
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SEE ALSO
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ppm
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AUTHOR
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Angus Duggan
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Table Of Contents
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