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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(1) or through GUI elements in
       xscanimage(1), xsane(1),	quiteinsane(1) or kooka(1).

       If you have any success with a scanner not listed here, or if  you  no-
       tice  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 teco2

       Scan Mode

       --mode Lineart|Gray|Color
	      selects the basic	mode of	operation of the scanner.  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 1..600
	      Selects  the resolution for a scan. The scanner can do all reso-
	      lutions between 1	and 600, in increments of 1, for  Lineart  and
	      Gray.  For Color,	a restricted set of resolutions	are available.

	      Note: All	values with ydpi > 300 (300 x 600) or 600 (600 x 1200)
	      result in	a wrong	proportion for the scan. The proportion	can be
	      adjusted with the	following imagemagick command:
	      convert -geometry	(dpi/max_xdpi *	100%)x100%
	      max_xdpi is for the vm3575 constant with 300 dpi e.g. 600dpi ad-
	      just with: convert -geometry 200%x100%

       --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".

       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).

OPTIONS	FOR COLOR MODE
       These options are valid for scan	mode Color only.

       --red-gamma-table
	      Can  be  used to download	a user defined gamma table for the red
	      channel. The table must be 256 bytes long.

       --green-gamma-table
	      Can be used to download a	user defined gamma table for the green
	      channel. The table must be 256 bytes long.

       --blue-gamma-table
	      Can  be used to download a user defined gamma table for the blue
	      channel. The table must be 256 bytes long.

OPTIONS	ONLY FOR VM3564, VM356A, VM3575	and VM6575
       These options are only available	for VM3564, VM356A, VM3575 and	VM6575
       models.

       --white-level-r 0..64
	      Selects  what  red  radiance level should	be considered "white",
	      when scanning some sheets	 by  changing  the  calibration	 value
	      loaded into the scanner. Scale 0..64 in steps of 1.

       --white-level-g 0..64
	      Selects  what green radiance level should	be considered "white",
	      when scanning some sheets	by changing the	 calibration  i	 value
	      loaded into the scanner. Scale 0..64 in steps of 1.

       --white-level-b 0..64
	      Selects  what  blue radiance level should	be considered "white",
	      when scanning some sheets	 by  changing  the  calibration	 value
	      loaded into the scanner. Scale 0..64 in steps of 1.

CONFIGURATION FILE
       The  configuration  file	/usr/local/etc/sane.d/teco2.conf supports only
       one item: 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(7),	sane-scsi(5), scanimage(1), xscanimage(1), xsane(1)

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 | OPTIONS | OPTIONS FOR COLOR MODE | OPTIONS ONLY FOR VM3564, VM356A, VM3575 and VM6575 | CONFIGURATION FILE | FILES | ENVIRONMENT | LIMITATIONS | BUGS | SEE ALSO | AUTHORS | CREDITS

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