sane-teco3(5)            SANE Scanner Access Now Easy            sane-teco3(5)



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

       /usr/local/lib/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)
