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


       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-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

       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.

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

              indicates whether to scan both side of the sheet.

              selects  the  number  of pages to scan (one or until the tray is


       --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

       -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.


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

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

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

              option  sets  the tonal gradation for the halftone mode. Pattern
              downloading is not implemented by the backend.

              provides automatic separation of text and images.

              option indicate the source of the white base.

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

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

              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.


       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.


              The static library implementing this backend.

              The shared library implementing this backend (present on systems
              that support dynamic loading).


              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.


       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.

              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.


       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"


       None known.


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


       The package is actively maintained by Frank Zago.

                                  11 Jul 2008               sane-matsushita(5)