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sane-matsushita(5)	 SANE Scanner Access Now Easy	    sane-matsushita(5)

NAME
       sane-matsushita - SANE backend for Panasonic KV-SS high speed scanners

DESCRIPTION
       The sane-matsushita library implements a	SANE (Scanner Access Now Easy)
       backend	that  provides access to some Panasonic	KV-SS high speed scan-
       ners. This backend is stable.

       At present, the following scanners are known to work with this backend:

		Product	id
	      --------------
		 KV-SS25
		 KV-SS25D
		 KV-SS55EX (*)
		 KV-S2025C (*)
		 KV-S2045C (*)
		 KV-S2065L (*)

       (*) WARNING: None of the	advanced options of these scanners are	avail-
       able  (i.e. no color, no	high resolution, no automatic cropping). Basi-
       cally, the driver does no more than what	it does	 for  the  KV-SS25.  I
       don't have access to such scanners, and thus cannot add these options.

       Other Panasonic high speed scanners may or may not work with that back-
       end.

       Valid command line options and their syntax can be listed by using:

	      scanimage	--help -d matsushita

       Scan Mode

       --mode selects the basic	mode of	operation of the scanner.

       --resolution
	      selects  the resolution for a scan. Each model supports all or a
	      subset of	these resolutions: 100,	150, 200, 240, 300, 360, 400.

       --duplex
	      indicates	whether	to scan	both side of the sheet.

       --feeder-mode
	      selects the number of pages to scan (one or until	 the  tray  is
	      empty).

       Geometry

       --paper-size A4|...|Legal|Letter	[A4]
	      selects the area to scan.	It adjusts the -l -t -x	-y options ac-
	      cordingly. It does not need to be	the real size of the paper.

       -l -t -x	-y
	      controls	the  scan  area: -l sets the top left x	coordinate, -t
	      the top left y coordinate, -x  selects  the  width  and  -y  the
	      height  of  the  scan area. All parameters are specified in mil-
	      limeters.	It is possible to use the option --paper-size instead.

       Enhancement

       --brightness
	      controls the brightness of the acquired image. The value	varies
	      from 1 to	255, or	less, depending	on the scanner model.

       --contrast
	      controls	the contrast of	the acquired image. Some models	do not
	      support that option.

       --automatic-threshold
	      automatically sets brightness,  contrast,	 white	level,	gamma,
	      noise reduction and image	emphasis. These	options	are not	avail-
	      able when	automatic-threshold is in use.

       --halftone-pattern
	      sets  the	 tonal	gradation for the halftone mode. Pattern down-
	      loading is not implemented by the	backend.

       --autoseparation
	      provides automatic separation of text and	images.

       --white-level
	      indicates	the source of the white	base.

       --noise-reduction
	      reduces the isolated dot noise. This option is not supported  by
	      all scanners.

       --image-emphasis
	      sets the image emphasis. Some selection are not available	on all
	      scanners.

       --gamma
	      sets  the	 gamma	curve. It is only valid	for Gray modes,	and is
	      not available on all scanners. Gamma downloading is  not	imple-
	      mented by	the backend.

CONFIGURATION FILE
       The  configuration  file	/usr/local/etc/sane.d/matsushita.conf supports
       the device name to use (e.g.  /dev/scanner)  and	 the  SCSI  option  to
       auto-detect the scanners	supported.

FILES
       /usr/local/lib/sane/libsane-matsushita.a
	      The static library implementing this backend.

       /usr/local/lib/sane/libsane-matsushita.so
	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT
       SANE_DEBUG_MATSUSHITA
	      If the library was compiled with debug support enabled, this en-
	      vironment	 variable  controls  the debug level for this backend.
	      E.g., a value of 128 requests all	debug output  to  be  printed.
	      Smaller levels reduce verbosity.

LIMITATIONS
       Memory in the KV-SS 25
	      The  KV-SS  25 has not enough internal memory to scan a whole A4
	      page in duplex mode at high resolution. The frontend will	return
	      a	memory error in	that case. Apparently, the KV-SS 25D  has  not
	      that problem.

       Pattern and gamma downloading
	      The  scanner,  with the proper firmware, can download a halftone
	      pattern and a gamma table. This is not implemented.

       Sub-areas
	      The scanner can support up to 3 sub-areas	on each	side to	define
	      some more	precise	enhancement options. This is not implemented.

       Duplex mode
	      The backend does not support the setting	of  different  options
	      for  each	 side.	The  scan  will	 occur	with  the same options
	      (halftone	pattern, brightness, image emphasis) for both sides.

SCANNING EXAMPLE
       To date,	the only frontend capable of using this	scanner	at full	 speed
       is scanadf(1).

       A scanadf(1) command line would be:

       scanadf	-d matsushita --output-file scan%04d.pbm --start-count 0 --du-
       plex --resolution 300 --feeder-mode="All	pages" --paper-size="A4"

BUGS
       None known.

SEE ALSO
       sane-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)

AUTHOR
       The package is actively maintained by Frank Zago.
	      http://www.zago.net/sane/#matsushita

				  11 Jul 2008		    sane-matsushita(5)

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