sane-teco1 - SANE backend for TECO / RELISYS scanners


   The  sane-teco1  library  implements  a  SANE (Scanner Access Now Easy)
   backend that provides access to some TECO SCSI flatbed  scanners.  This
   backend  should  be considered beta-quality software! TECO scanners are
   sold under various brands like RELISYS, PIOTECH,  TRUST.  This  backend
   may or may not support yours.

   The scanners that should work with this backend are:

             Vendor Model           TECO model      status
          ----------------------  --------------  -----------
            Relisys AVEC 2400        VM3520        tested
            Relisys AVEC 2412        VM3520+       tested
            Relisys AVEC 4800        VM4530        untested
            Relisys AVEC 4816        VM4530+       untested
            Relisys RELI 2400        VM3530        untested
            Relisys RELI 2412        VM3530+       tested
            Relisys RELI 2412        VM3530+       untested
            Relisys RELI 4816        VM4540        tested
            Relisys RELI 4830        VM4542        tested
            Relisys RELI 9600        VM6530        untested
            Relisys RELI 9612        VM6530*       untested
            Relisys RELI 9624        VM6530+       untested
            Relisys RELI 9630        VM6540        untested
            Relisys RELI DS15        VM3440        untested
            Relisys RELI DS6         VM3420        untested
            Dextra  DF-600P          VM3510        tested
            Dextra  DF-4830T         VM4542        untested
            Dextra  DF-1200T+        VM3530+       untested
            Dextra  DF-9624          VM6530+       untested

   Note  that  the  untested  scanner  will not be directly supported. You
   should contact the author for that.

   The TECO VM number can usually be found at the back of the scanner.  It
   is  also  part of the FCC ID. "sane-find-scanner -v" will also show the
   scsi inquiry, and if it is a TECO scanner, the name will be there too.

   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.

   If you have any success with a scanner not listed here, or if you  have
   any strange behavior, please report to the backend maintainer or to the
   SANE mailing list.

   Valid command line options and their syntax can be listed by using
          scanimage --help -d teco1

   Scan Mode

   --mode selects the basic mode of operation of the scanner valid choices
          are  Black  & White , Grayscale and Color The Black & White mode
          is black and white only (1  bit).  Grayscale  will  produce  256
          levels  of  gray  (8  bits).  Color will produce a 24 bits color

          selects the resolution for  a  scan.  The  scanner  can  do  all
          resolutions between 1 and 600, in increments of 1.

   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

   Enhancement options

          (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.

          (Black & White only) select the dither  mask  to  use.  Possible
          values  are  Line art , 2x2 , 3x3 , 4x4 bayer , 4x4 smooth , 8x8
          bayer , 8x8 smooth , 8x8 horizontal and 8x8 vertical

          requests a preview scan. The resolution used for that scan is 22
          dpi  and  the scan area is the maximum allowed. The scan mode is
          user selected. The default is "no".


   The  configuration  file  /etc/sane.d/teco1.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 has many more options than this SANE backend.
   However  they  are  only  software  adjustments.  This   backend   only
   implements what the scanner can support.


   None known.


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


   The package is actively maintained by Frank Zago.


   Thanks  to Gerard Delafond for the VM4542 support.  Thanks to Jean-Yves
   Simon for the VM3510 support.

                              14 Jul 2008                    sane-teco1(5)


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