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sane-canon_lide70(5)	 SANE Scanner Access Now Easy	  sane-canon_lide70(5)

NAME
       sane-canon_lide70  -  SANE  backend  for	 the Canon LiDE	70 USB flatbed
       scanner

DESCRIPTION
       The canon_lide70	library	implements a SANE (Scanner  Access  Now	 Easy)
       backend that provides access to the Canon Inc. CanoScan LiDE 70 flatbed
       scanner.

       Due to Canon's unwillingness to	provide	 scanner  documentation,  this
       software	 was  developed	by analyzing the USB traffic of	the Windows XP
       driver. The precise meaning of the individual commands that are sent to
       the scanner is known only to a very limited extent. Some	sophistication
       present in the Windows XP driver	has been left out. There is, for exam-
       ple, no active calibration.

       TESTERS ARE WELCOME. Send your bug reports and comments to the sane-de-
       vel mailing list	<sane-devel@alioth-lists.debian.net>

       The Canoscan LiDE 600 (or 600f, with film unit) is closely  related  to
       the  LiDE  70,  but it does not work with this backend. Support for the
       LiDE 600	will be	added by the end of 2020.

CONFIGURATION
       The /usr/local/etc/sane.d/canon_lide70.conf file	identifies the LiDE 70
       by  its	vendor	code  0x04a9 and its product code 0x2225. For the LiDE
       600(f) the product code would be	0x2224.

BACKEND	SPECIFIC OPTIONS
       Scan Mode:

       --resolution 75|150|300|600|1200	[default 600]
	       Sets the	resolution of the scanned  image  in  dots  per	 inch.
	      Scanning at 1200 dpi is very slow.

       --mode Color|Gray|Lineart [default: Color]
		Selects	 the  scan  mode.  Lineart means fully black and fully
	      white pixels only.

       --threshold 0..100 (in steps of 1) [default 75]
	       Select minimum-brightness percentage to get a white point, rel-
	      evant only for Lineart

       --non-blocking[=(yes|no)] [inactive]
	       This option has not yet been implemented. Scans are captured in
	      a	temporary file with a typical size of 100MB.

       Geometry:

       -l 0..216.069 [default 0]
		      Top-left x position of scan area in millimeters.

       -t 0..297 [default 0]
		      Top-left y position of scan area in millimeters.

       -x 0..216.069 [default 80]
		      Width of scan-area in millimeters.

       -y 0..297 [default 100]
		      Height of	scan-area in millimeters.

FILES
       /usr/local/etc/sane.d/canon_lide70.conf
	      The backend configuration	file

       /usr/local/lib/sane/libsane-canon_lide70.a
	      The static library implementing this backend.

       /usr/local/lib/sane/libsane-canon_lide70.so
	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT
       SANE_DEBUG_CANON_LIDE70
	      If the library was compiled with debug support enabled, this en-
	      vironment	variable controls the debug level  for	this  backend.
	      Higher debug levels increase the verbosity of the	output.

	      Example:
	      SANE_DEBUG_CANON_LIDE70=128 scanimage > /dev/null

KNOWN PROBLEMS
       At  low	resolutions  (75 and 150 dpi, implying high slider speeds) the
       scanner misses the top one millimeter of	the scan  area.	 This  can  be
       remedied	 by  shifting  the  document one millimeter downward, in cases
       where such precision matters. Note that xsane uses the 75 dpi mode  for
       prescans.

       It is recommended that in xsane the gamma value be set to approximately
       1.5 to get more realistic colors. This also wipes  out  some  artifacts
       caused by the lack of real calibration.

SEE ALSO
       sane(7),	sane-usb(5), sane-find-scanner(1), scanimage(1)
       http://www.juergen-ernst.de/info_sane.html

AUTHOR
       pimvantend, building upon pioneering work by Juergen Ernst.

				  26 Nov 2019		  sane-canon_lide70(5)

NAME | DESCRIPTION | CONFIGURATION | BACKEND SPECIFIC OPTIONS | FILES | ENVIRONMENT | KNOWN PROBLEMS | SEE ALSO | AUTHOR

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