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Man Pages


Manual Reference Pages  -  PNM2PPA (1)

NAME

pnm2ppa - convert portable anymap (PNM) images to HP’s PPA printer format.

CONTENTS

Synopsis
Description
Options
Notes
Files
Author
History
Bugs

SYNOPSIS

pnm2ppa [options] [ -i infile ] [ -o outfile ]

DESCRIPTION

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 /usr/local/etc/pnm2ppa.conf).

-F GammaFile Overrides reading the color-correction table (Gamma curve) from the default file /usr/local/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 /usr/local/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.

SEE ALSO

pnm(5), ppm(5), pbm(5)

FILES

/usr/local/etc/pnm2ppa.conf Default configuration file.

/usr/local/etc/pnm2ppa.gamma Default Gamma (color-correction) file.

AUTHOR

This code is licensed under the GNU Public License version 2. See LICENSE for details.

(c) 1998-1999   Tim Norman

(c) 1999        Giorgio Marzano

(c) 1999        Andrew van der Stock

(c) 1998-2002   Various 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).

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