This program is part of Netpbm.
ppmtopjxl reads a PPM image as input and produces a PCL file suitable for printing on an HP PaintJet XL printer as output.
The generated file is not suitable for printing on a normal PrintJet printer. The -nopack option generates a file which does not use the normal TIFF 4.0 compression method and thus might be printable on a normal PaintJet printer (not an XL).
In addition to the options common to all programs based on libnetpbm (most notably -quiet, see Common Options), ppmtopjxl recognizes the following command line options:
Generate 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).
Set the gamma correction for the image. The useful range for the PaintJet XL is approximately 0.6 to 1.5.
Alter the rendering algorithm used for images. These options select ordered dithering, clustered ordered dithering, or error diffusion respectively.
Enhance images with a dark background when they are reduced in size.
Turn 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.
Resize the image. 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 `pt' (points), `dp' (decipoints), `in' (inches), or `cm' (centimetres). If you specify only one dimension, ppmtopjxl will scale the other one appropriately.
Synonyms of -xsize and -ysize.
Alternatives to -xsize and -ysize. Scale the image by a simple factor.
Shift the image on the page. These move the image the specified dimensions right and down.
Angus Duggan