sane-teco2(5)             (14 Jul 2008)             sane-teco2(5)

     NAME
          sane-teco2 - SANE backend for TECO / RELISYS scanners

     DESCRIPTION
          The sane-teco2 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
          Mustek, Relisys, Piotech, Primax, TRUST.  This backend may
          or may not support yours.

          The scanners that should work with this backend are:

                  Vendor Model               TECO model      status
               --------------------------- --------------  -----------
                 Mustek ScanMagic 4830S      VM3575         untested
                 Primax Jewel 4800           VM356A         good
                 Primax Profi 9600           VM6575         basic
                 Primax Profi 19200          VM6586         good
                 Relisys APOLLO Express 3    VM356A         basic
                 Relisys APOLLO Express 6    VM6565         good
                 Relisys APOLLO Express 12   ?              untested
                 Relisys AVEC II S3          VM3564         good
                 Relisys AVEC Super 3        VM3575         basic
                 Relisys SCORPIO Pro         VM6575         good
                 Relisys SCORPIO Pro-S       VM6586         untested
                 Relisys SCORPIO Super 3     VM3575         good

          For all these scanners, lineart and gray mode work well.
          However, most of them do not support more than a handful of
          resolutions in color mode. See the backend home page (under
          AUTHOR) for the exact status of each scanner.

          Note that the untested scanner will not be directly sup-
          ported. 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.

          The options the backend supports can either be selected
          through command line options to programs like scanimage(1)
          or through GUI elements in xscanimage(1), xsane(1),
          quiteinsane(1) or kooka(1).

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

     OPTIONS

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          Valid command line options and their syntax can be listed by
          using:

               scanimage --help -d teco2

          Scan Mode

          --mode Lineart|Gray|Color
               selects the basic mode of operation of the scanner.
               The Lineart mode is black and white only (1 bit).  Gray
               mode will produce 256 levels of gray (8 bits).  Color
               will produce a 24 bits color image.

          --resolution 1..600
               Selects the resolution for a scan. The scanner can do
               all resolutions between 1 and 600, in increments of 1,
               for Lineart and Gray.  For Color, a restricted set of
               resolutions are available.

               Note: All values with ydpi > 300 (300 x 600) or 600
               (600 x 1200) result in a wrong proportion for the scan.
               The proportion can be adjusted with the following
               imagemagick command:
               convert -geometry (dpi/max_xdpi * 100%)x100%
               max_xdpi is for the vm3575 constant with 300 dpi e.g.
               600dpi adjust with: convert -geometry 200%x100%

          --preview
               requests a preview scan. The resolution used for that
               scan is 50  dpi (for VM356A and VM6575 75 dpi) and the
               scan area is the maximum allowed.  The scan mode is
               user selected. The default is "no".

          Geometry options

          -l, -t, -x,  -y
               Control the scan area: -l sets the top left x coordi-
               nate, -t the top left y coordinate, -x selects the
               width and -y the height of the scan area. All parame-
               ters are specified in millimeters by default.

          Enhancement options

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          --custom-gamma (no custom gamma option for
               (color mode only) allows the user to specify a gamma
               table (see the next 3 parameters).

     OPTIONS FOR COLOR MODE
          These options are valid for scan mode Color only.

          --red-gamma-table
               Can be used to download a user defined gamma table for
               the red channel. The table must be 256 bytes long.

          --green-gamma-table
               Can be used to download a user defined gamma table for
               the green channel. The table must be 256 bytes long.

          --blue-gamma-table
               Can be used to download a user defined gamma table for
               the blue channel. The table must be 256 bytes long.

     OPTIONS ONLY FOR VM3564, VM356A, VM3575
          These options are only available for VM3564, VM356A, VM3575
          and VM6575 models.

          --white-level-r 0..64
               Selects what red radiance level should be considered
               "white", when scanning some sheets by changing the cal-
               ibration value loaded into the scanner. Scale 0..64 in
               steps of 1.

          --white-level-g 0..64
               Selects what green radiance level should be considered
               "white", when scanning some sheets by changing the cal-
               ibration i value loaded into the scanner. Scale 0..64
               in steps of 1.

          --white-level-b 0..64
               Selects what blue radiance level should be considered
               "white", when scanning some sheets by changing the cal-
               ibration value loaded into the scanner. Scale 0..64 in
               steps of 1.

     CONFIGURATION FILE
          The configuration file /etc/sane.d/teco2.conf supports only

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          one item: the device name to use (eg /dev/scanner).

     FILES
          /usr/lib/x86_64-linux-gnu/sane/libsane-teco2.a
               The static library implementing this backend.

          /usr/lib/x86_64-linux-gnu/sane/libsane-teco2.so
               The shared library implementing this backend (present
               on systems that support dynamic loading).

     ENVIRONMENT
          SANE_DEBUG_TECO2
               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.

          SANE_TECO2_CAL_ALGO
               Either 0 or 1. Selects the algorithm for the calibra-
               tion. A value of 1 seems to give better scans on the
               VM356A, VM3575.  Feedback on it is welcome.  For
               VM3564, VM356A, VM3575, VM6575 default 1.  For other
               supported types default 0.

     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
          Plenty. Parts of this backend are still under development.

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

     AUTHORS
          Frank Zago
               http://www.zago.net/sane/#teco2

          The package is actively maintained by Gerard Klaver.

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               http://gkall.hobby.nl/teco2.html

     CREDITS
          Thanks to:

     a patch to support the VM3564 and VM356A.
          Gerard Klaver for his relentless VM3575 testings and contributed

          Mark Plowman for providing the first SCSI traces from a VM3575.

     VM6586 and for his testing, and to Stefan von Dombrowski for his
     testing.
          Andreas Klaedtke for providing the first SCSI traces from a

     VM656A and for his testing.
          Nicolas Peyresaubes for providing the first SCSI traces from a

          Dave Parker for testing the support for the VM6575.

          Michael Hoeller for testing the support for the VM356A.

     isys AVEC II S3 firmware 1.09).
          Christoph.Hoeffner for testing the support for the VM3564 (Rel-

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