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sane-sceptre(5)		 SANE Scanner Access Now Easy	       sane-sceptre(5)

NAME
       sane-sceptre - SANE backend for SCEPTRE scanners

DESCRIPTION
       The  sane-sceptre  library  implements a	SANE (Scanner Access Now Easy)
       backend that provides access to Sceptre flatbed scanners. This  backend
       should  be  considered beta-quality software! Please report any strange
       behavior	to the maintainer of the backend or to the SANE	mailing	list.

       At present, only	one scanner is known to	work with this backend:

	      Model			   Connection Type
	      ---------------------------  -------------------
	      Sceptre VividScan	S1200	   SCSI

       The make	of this	scanner	is KINPO, so other scanners from that manufac-
       turer may also work (eg.	the S600).

OPTIONS
       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) or	xsane(1).

       Valid command line options and their syntax can be listed by using

	      scanimage	--help -d sceptre

       Scan Mode

       --mode Lineart|Halftone|Gray|Color
	      Selects the basic	mode of	operation of the scanner.  The Lineart
	      and Halftone mode	are black and white only (1 bit).   Gray  will
	      produce  256  levels  of gray (8 bits).  Color will produce a 24
	      bits color image.	The scanner supports 30	bits internally	but it
	      only exports 24.

       --resolution 50..1200
	      Selects  the  resolution	for a scan. The	scanner	can do several
	      resolutions between 50 and 1200.

       --halftone-pattern 1|2|3|4
	      Selects the pattern mode that is used in Halftone	mode.

       --gamma-correction Default|User Defined|High Density Printing|Low  den-
       sity printing|High contrast printing
	      controls the scanner internal gamma correction.

       --custom-gamma
	      Allows the user to specify a gamma table (see the	next 3 parame-
	      ters).  Color mode 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.  Color	mode only.

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

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

       --threshold 0..255
	      Sets  the	 threshold for black and white pixels in Lineart mode.
	      Possible values are from 0 (darker) to 255 (lighter).

       --preview
	      Requests a preview scan. The resolution used for that scan is 30
	      dpi  and	the scan area is the maximum allowed. The scan mode is
	      user selected. The default is "no".

       The 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.

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

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

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

ENVIRONMENT
       SANE_DEBUG_SCEPTRE
	      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.

LIMITATIONS
       Resolutions
	      The windows TWAIN	driver can be set to any resolution between 50
	      to 1200 (excluding software interpolation). This backend cannot.
	      Only a handful of	resolution are available, although they	should
	      be numerous enough.

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://www.zago.net/sane/#sceptre

				  11 Jul 2008		       sane-sceptre(5)

NAME | DESCRIPTION | OPTIONS | CONFIGURATION FILE | FILES | ENVIRONMENT | LIMITATIONS | BUGS | SEE ALSO | AUTHOR

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