NAME

       sane-teco3 - SANE backend for TECO / RELISYS scanners

DESCRIPTION

       The  sane-teco3  library implements a SANE (Scanner Access Now Easy) backend that provides
       access to some TECO SCSI flatbed scanners. This backend should be considered alpha-quality
       software!  TECO  scanners are sold under various brands like RELYSIS, 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 Scorpio                VM3552     tested
                Plustek OpticPro 2400SP        VM3552     untested
                PIOTECH Splendeur 3024         VM3552     tested
                Trust Imagery 2400 SP          VM3552     tested
                Trust Imagery 4800 SP+         VM3552     tested
                Trust Imagery 9600 SP          VM3552     untested

       The TECO VM number can usually be found at the back of the scanner. It is also part of the
       FCC ID.

       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 teco3

       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
              1200, 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 1024 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 1024 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 1024 bytes long.

       --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 /etc/sane.d/teco3.conf supports only one  information:  the  device
       name to use (eg /dev/scanner).

FILES

       /usr/lib/arch_triplet/sane/libsane-teco3.a
              The static library implementing this backend.

       /usr/lib/arch_triplet/sane/libsane-teco3.so
              The  shared  library  implementing  this  backend  (present on systems that support
              dynamic loading).

ENVIRONMENT

       SANE_DEBUG_TECO3
              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

       Not much.

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/#teco3

                                           14 Jul 2008                              sane-teco3(5)