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 (ie 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
          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]
          options  selects  the  area  to  scan. It adjust the -l -t -x -y
          options accordingly. It does not need to be the real size of the
          paper.

   -l -t -x -y
          control 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 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
          available when automatic-threshold is in use.

   --halftone-pattern
          option 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
          option indicate the source of the white base.

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

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

   --gamma
          options  set  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 /etc/sane.d/matsushita.conf supports the device
   name to use (eg /dev/scanner) and the SCSI option  to  auto-detect  the
   scanners supported.

FILES

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

   /usr/lib/arch_triplet/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
          environment  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.

   A scanadf 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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