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)