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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	and 600(F) USB
       flatbed scanners

DESCRIPTION
       The canon_lide70	library	implements a SANE (Scanner  Access  Now	 Easy)
       backend	that  provides	access	to the Canon Inc. CanoScan LiDE	70 and
       600(F) flatbed scanners.	The film unit of the LiDE  600F	 is  not  sup-
       ported.

       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 and reviewers are welcome. Send your bug	reports	 and  comments
       to the sane-devel mailing list _sane-devel@alioth-lists.debian.net_.

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 is 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. Scan-
	      ning at 1200 dpi is not available	on the LiDE 600(F) and	it  is
	      very slow	on the LiDE 70.

       --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, rele-
	      vant 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
       LiDE 70 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(1)	uses the 75  dpi  mode
       for prescans. The problem is worse on the LiDE 600(F), where the	offset
       is five millimeters.

       It is recommended that in xsane(1) the gamma value be set  to  approxi-
       mately 1.7 to get more realistic	colors.	This also wipes	out some arti-
       facts caused by the lack	of real	calibration.

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

AUTHOR
       pimvantend, building upon pioneering work by Juergen Ernst.

				  22 Aug 2020		  sane-canon_lide70(5)

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

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