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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(1) or through GUI elements in xs-
     canimage(1) or xsane(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
     Valid command line options and their syntax can be listed by using:

	    scanimage --help -d teco3

     Scan Mode

     --mode Black & White|Grayscale|Color
	    Selects the basic mode of operation of the	scanner.   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-bit color  im-
	    age.

     --resolution 1..1200
	    Selects  the  resolution  for a scan. The scanner can do all resolu-
	    tions between 1 and 1200, in increments of 1.

     --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  se-
	    lected. The default is "no".

     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.

OPTIONS FOR COLOR MODE ONLY
     --custom-gamma
	    Allows the user to specify a gamma table (see  the	next  3  parame-
	    ters).

     --red-gamma-table
	    Can be used to download a user defined gamma table for the red chan-
	    nel. The table must be 1024 bytes long.

     --green-gamma-table
	    Can  be  used  to  download a user defined gamma table for the green
	    channel. The table must be 1024 bytes long.

     --blue-gamma-table
	    Can be used to download a user defined  gamma  table  for  the  blue
	    channel. The table must be 1024 bytes long.

CONFIGURATION FILE
     The  configuration  file /usr/local/etc/sane.d/teco3.conf supports only one
     item: 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 envi-
	    ronment 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. How-
     ever  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)

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