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

/usr/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