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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  scanners.
     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 available
     (i.e. no color, no high resolution, no automatic cropping). Basically,  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 backend.

     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 sub-
	    set 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 accord-
	    ingly. 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 millimeters. It is possi-
	    ble 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 sup-
	    port that option.

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

     --halftone-pattern
	    sets the tonal gradation for the halftone mode. Pattern  downloading
	    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  implemented  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  envi-
	    ronment  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 pat-
	    tern 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  pat-
	    tern, 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	--duplex
     --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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