sane-sceptre - SANE backend for SCEPTRE scanners


   The  sane-sceptre  library  implements a SANE (Scanner Access Now Easy)
   backend that provides access to Sceptre flatbed scanners. This  backend
   should  be  considered beta-quality software! Please report any strange
   behavior to the maintainer of the backend or to the SANE mailing list.

   At present, only one scanner is known to work with this backend:

          Model                        Connection Type
          ---------------------------  -------------------
          Sceptre VividScan S1200      SCSI

   The make of  this  scanner  is  KINPO,  so  other  scanners  from  that
   manufacturer may also work (eg. the S600).


   The options the backend supports can either be selected through command
   line options to programs like scanimage  or  through  GUI  elements  in
   xscanimage or xsane.

   Valid command line options and their syntax can be listed by using
          scanimage --help -d sceptre

   Scan Mode

   --mode selects the basic mode of operation of the scanner valid choices
          are Lineart, Halftone, Gray and Color.  The Lineart and Halftone
          mode  are  black  and  white only (1 bit). Gray will produce 256
          levels of gray (8 bits). Color will  produce  a  24  bits  color
          image.  The  scanner  supports  30  bits  internally but it only
          exports 24.

          selects the resolution for a scan. The scanner  can  do  several
          resolutions between 50 and 1200.

          selects  the  pattern  mode that is used in Halftone mode. Valid
          options are 1, 2, 3 and 4.

          controls the scanner internal gamma  correction.  Valid  options
          are  "Default",  "User  defined",  "High  density printing" "Low
          density printing" and "High contrast printing".

          (color mode only) allows the user to specify a gamma table  (see
          the next 3 parameters).

          (color  mode  only) can be used to download a user defined gamma
          table for the red channel. The table must be 256 bytes long.

          (color mode only) can be used to download a user  defined  gamma
          table for the green channel. The table must be 256 bytes long.

          (color  mode  only) can be used to download a user defined gamma
          table for the blue channel. The table must be 256 bytes long.

          sets the threshold for black and white pixels in  lineart  mode.
          Possible values are from 0 (darker) to 255 (lighter).

          requests a preview scan. The resolution used for that scan is 30
          dpi and the scan area is the maximum allowed. The scan  mode  is
          user selected. The default is "no".

   The geometry options

   -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 by


   The  configuration  file  /etc/sane.d/sceptre.conf  supports  only  one
   information: the device name to use (eg /dev/scanner).


          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.


          The windows TWAIN driver can be set to any resolution between 50
          to 1200 (excluding software interpolation). This backend cannot.
          Only a handful of resolution are available, although they should
          be numerous enough.


   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-sceptre(5)


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