sane-canon_lide70.5



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-devel 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
              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
       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)

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