NAME

       sane-teco1 - SANE backend for TECO / RELISYS scanners

DESCRIPTION

       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 image.

       --resolution
              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
              default.

       Enhancement options

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

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

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

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

       --dither
              (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

       --preview
              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".

CONFIGURATION FILE

       The  configuration  file @CONFIGDIR@/teco1.conf supports only one information: the device name to use (eg
       /dev/scanner).

FILES

       @LIBDIR@/libsane-teco1.a
              The static library implementing this backend.

       @LIBDIR@/libsane-teco1.so
              The shared library implementing this backend (present on systems that support dynamic loading).

ENVIRONMENT

       SANE_DEBUG_TECO1
              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

       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.

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/#teco

CREDITS

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

@PACKAGEVERSION@                                   14 Jul 2008                                     sane-teco1(5)