Reads portable anymap (PNM) format as input. Binary PNM formats pnmraw =
{ppmraw (color pixmap), pgmraw (graymap), and pbmraw (black-and-white bitmap)}
are strongly preferred. Output stream can be locally processed by
Hewlett-Packard's
Printing Performance Architecture (PPA) printers (HP DeskJet 710C, 712C, 720C,
722C, 820C, and 1000C series).
(PNM format output can be produced from PostScript(tm) input by the
GhostScript output devices "pbmraw", "pgmraw" or "ppmraw", or by "pnmraw",
which will choose one of these formats as appropriate for the document.)
pnm2ppa assumes the input resolution is 600dpi (or 300dpi if
the command-line option --dpi300 is used): input at higher/lower
resolutions will result in a correspondingly larger/smaller printed image,
provided it is within the printer's allowed size range.
OPTIONS
-b bottommargin
Sets the bottom margin bottommargin in units of 1/600 inches (e.g., -b 150 corresponds to 0.25").
-B blackness
Sets the black ink density blackness in drops per pixel (0,1,2,3,4).
--bi
Force bidirectional print sweeps.
--bw
Disables the color cartridge; will print in grey scale using only the black cartridge.
-d
Displays the current configuration.
--dpi300
Treat input resolution as 300dpi instead of 600dpi.
--eco
Econofast mode: lower print quality that is faster and saves ink.
-f configFile
Re-reads configuration from configFile (after
initially reading it from /etc/pnm2ppa.conf).
-F GammaFile
Overrides reading the color-correction table (Gamma curve) from the default
file /etc/pnm2ppa.gamma, and uses GammaFile instead.
--fd
Enable fast ordered dithering instead of using the slower, but beautiful, Floyd-Steinberg dithering. (Has no effect in --bw mode.)
-g
Prints a page of color intensity samples (for comparison with gamma.ppm
data produced by calibrate_ppa).
This is part of a color-correction procedure; see COLOR.txt for more details.
-h, --help
Displays program usage.
-i infile
Input file infile is either a path to a PPM file, or '-' to indicate stdin (defaults to stdin).
-l leftmargin
Sets the left margin leftmargin in units of 1/600 inches (e.g., -l 150 corresponds to 0.25").
--noGamma
Switches off any color-correction.
-o outfile | -
Output file outfile is either a path to a file or device, or '-' to indicate stdout (defaults to stdout).
-p
Disables the black ink cartridge; i.e., print using only the color ink cartridge, even for printing "black". This might be useful for printing high-quality
color images.
-r rightmargin
Sets the right margin rightmargin in units of 1/600 inches (e.g., -r 150 corresponds to 0.25").
-s papersize
Sets the default paper size (now used only for color-correction output
produced by the -g option).
In normal use, pnm2ppa now instead reads the paper dimensions from
pnm input file headers, and
checks that it is a valid papersize for the given printer model.
Possible values for papersize are a4 (A4),
letter or us (US Letter, 8.5"x11"), legal (US Legal,
8.5"x14").
The default is US Letter.
-t topmargin
Sets the top margin topmargin in units of 1/600 inches (ie -t 150 corresponds to 0.25").
--uni
Force unidirectional (left to right) print sweeps. Useful if
"shearing" is a problem for high quality color images.
-v printertype
Selects the printer model. Possible values of printertype are:
710, 712, 720, 722, 820 and 1000.
The default is the HP DeskJet 7X0 Series (710, 712, 720, 722).
--verbose
Displays the program's System Log messages on the standard output, as well.
--version
Displays the program's version information.
-x xoffset
Sets the x-offset xoffset from the left of the page. Units are 1/600 inches.
-y yoffset
Sets the y-offset yoffset from the top of the page. Units are 1/600 inches.
NOTES
The default configuration file /etc/pnm2ppa.conf is read in first. Command line arguments then modify the resulting definitions.
The -v option resets all definitions (margins, offsets, etc.) back to
the inbuilt defaults for that printer and should be used before subsequent
-b, -l, -r, -t, -x and -y arguments.
This code is licensed under the GNU Public License version 2. See
LICENSE for details.
(c) 1998-1999Tim Norman
(c) 1999Giorgio Marzano
(c) 1999Andrew van der Stock
(c) 1998-2002Various authors for many, many fixes
HISTORY
This program was originally pbm2ppa, written by Tim Norman. It originally
supported black and white output on the 820 series.
Tim added nascent color support in early
1999. In May 1999, Giorgio Marzano started making real headway in getting
color support working properly. Andrew van der Stock has maintained
the code since September 1999, and made it available at
http://sourceforge.net/projects/pnm2ppa.
BUGS
Faint horizontal lines marking boundaries between print sweeps may be visible.
You may get better results when printing images, with the options:
-p --uni (this may no longer apply since recent code improvements).
