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 supported.

       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 example, 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  /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. Scanning 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, relevant 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

       /etc/sane.d/canon_lide70.conf
              The backend configuration file

       /usr/lib/x86_64-linux-gnu/sane/libsane-canon_lide70.a
              The static library implementing this backend.

       /usr/lib/x86_64-linux-gnu/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  environment  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.

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)