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sane-teco2(5)		 SANE Scanner Access Now Easy		 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  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.

       The options the backend supports	can either be selected through command
       line  options to	programs like scanimage	or through GUI elements	in xs-
       canimage, xsane,	quiteinsane or kooka.

       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 teco2

       Scan Mode

       --mode selects the basic	mode of	operation of the scanner valid choices
	      are Lineart , Gray and Color 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
	      Lineart  and Gray	selects	the resolution for a scan. The scanner
	      can do all resolutions between 1 and 600,	in increments of 1.

	      Color selects the	resolution for a scan. The scanner can do only
	      the resolutions listed.

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

       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 (no custom gamma option for the VM3564 and VM356A)
	      (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.

       --white-level-r
	      (VM3564,	VM356A,	VM3575 and VM6575 only)	Selects	what red radi-
	      ance level should	be  considered	"white",  when	scanning  some
	      sheets  by  changing the calibration value loaded	into the scan-
	      ner. Scale 0..64 in steps	of 1.

       --white-level-g
	      (VM3564, VM356A, VM3575 and VM6575 only) Selects what green  ra-
	      diance  level  should  be	considered "white", when scanning some
	      sheets by	changing the calibration i value loaded	into the scan-
	      ner. Scale 0..64 in steps	of 1.

       --white-level-b
	      (VM3564, VM356A, VM3575 and VM6575 only) Selects what blue radi-
	      ance level should	be  considered	"white",  when	scanning  some
	      sheets  by  changing the calibration value loaded	into the scan-
	      ner. Scale 0..64 in steps	of 1.

       --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 max-
	      imum allowed.  The scan mode is user selected.  The  default  is
	      "no".

CONFIGURATION FILE
       The  configuration  file	/usr/local/etc/sane.d/teco2.conf supports only
       one information:	the device name	to use (eg /dev/scanner).

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

       /usr/local/lib/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 en-
	      vironment	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  calibration.  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	imple-
       ments what the scanner can support.

BUGS
       Plenty. Parts of	this backend are still under development.

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

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

       The package is actively maintained by Gerard Klaver.
	      http://gkall.hobby.nl/teco2.html

CREDITS
       Thanks to:

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

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

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

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

       Dave Parker for testing the support for the VM6575.

       Michael Hoeller for testing the support for the VM356A.

       Christoph.Hoeffner for testing the support for the VM3564 (Relisys AVEC
       II S3 firmware 1.09).

				  14 Jul 2008			 sane-teco2(5)

NAME | DESCRIPTION | CONFIGURATION FILE | FILES | ENVIRONMENT | LIMITATIONS | BUGS | SEE ALSO | AUTHORS | CREDITS

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