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       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)