sane-teco1(5)							File Formats Manual						     sane-teco1(5)

NAME

       sane-teco1 - SANE backend for TECO / RELISYS scanners

DESCRIPTION

       The  sane-teco1	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 RELISYS, 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 AVEC 2400	 VM3520        tested
		Relisys AVEC 2412	 VM3520+       untested
		Relisys AVEC 4800	 VM4530        untested
		Relisys AVEC 4816	 VM4530+       untested
		Relisys RELI 2400	 VM3530        untested
		Relisys RELI 2412	 VM3530+       tested
		Relisys RELI 2412	 VM3530+       untested
		Relisys RELI 4816	 VM4540        untested
		Relisys RELI 4830	 VM4542        tested
		Relisys RELI 9600	 VM6530        untested
		Relisys RELI 9612	 VM6530*       untested
		Relisys RELI 9624	 VM6530+       untested
		Relisys RELI 9630	 VM6540        untested
		Relisys RELI DS15	 VM3440        untested
		Relisys RELI DS6	 VM3420        untested
		Dextra	DF-600P 	 VM3510        tested
		Dextra	DF-4830T	 VM4542        untested
		Dextra	DF-1200T+	 VM3530+       untested
		Dextra	DF-9624 	 VM6530+       untested

       Note that the untested scanner will not be directly supported. 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. "sane-find-scanner -v" will also show
       the scsi inquiry, and if it is a TECO scanner, the name will be there too.

       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 teco1

       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 600, 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 256 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 256 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 256 bytes long.

       --dither
	      (Black & White only) select the dither mask to use. Possible values are Line art , 2x2 , 3x3 , 4x4 bayer , 4x4 smooth , 8x8 bayer  ,
	      8x8 smooth , 8x8 horizontal and 8x8 vertical

       --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/teco1.conf supports only one information: the device name to use (eg /dev/scanner).

FILES

       /usr/lib/sane/libsane-teco1.a
	      The static library implementing this backend.

       /usr/lib/sane/libsane-teco1.so
	      The shared library implementing this backend (present on systems that support dynamic loading).

ENVIRONMENT

       SANE_DEBUG_TECO1
	      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 imple-
       ments what the scanner can support.

BUGS

       None known.

SEE ALSO

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

AUTHOR

       The package is actively maintained by Frank Zago.
	   http://fz.eryx.net/sane/#teco

CREDITS

       Thanks to Gerard Delafond for the VM4542 support.  Thanks to Jean-Yves Simon for the VM3510 support.

								 August 30th, 2002						     sane-teco1(5)