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sane-teco3(5)									    sane-teco3(5)

       sane-teco3 - SANE backend for TECO / RELISYS scanners

       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  behav-
       ior, 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.

	      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 coordi-
	      nate, -x selects the width and -y the height of the scan area. All  parameters  are
	      specified in millimeters by default.

       Enhancement options

	      (color  mode only) allows the user to specify a gamma table (see the next 3 parame-

	      (color mode only) can be used to download a user defined gamma table  for  the  red
	      channel. The table must be 1024 bytes long.

	      (color  mode only) can be used to download a user defined gamma table for the green
	      channel. The table must be 1024 bytes long.

	      (color mode only) can be used to download a user defined gamma table for	the  blue
	      channel. The table must be 1024 bytes long.

	      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".

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

	      The static library implementing this backend.

	      The  shared  library  implementing  this	backend  (present on systems that support
	      dynamic loading).

	      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.

       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.

       Not much.

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

       The package is actively maintained by Frank Zago.

					   25 July 2002 			    sane-teco3(5)
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