Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 110 insertions, 0 deletions

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+.TH sane\-canon_lide70 5 "22 Aug 2020"  "" "SANE Scanner Access Now Easy"
+.IX sane\-canon_lide70
+.SH NAME
+sane\-canon_lide70 \- SANE backend for the Canon LiDE 70 and 600(F) USB flatbed scanners
+.SH DESCRIPTION
+The
+.B 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.
+.PP
+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.
+.PP
+Testers and reviewers are welcome. Send your bug reports and comments to
+the sane\-devel mailing list
+.IR <sane\-devel@alioth-lists.debian.net> .
+.PP
+.SH CONFIGURATION
+The
+.I /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.
+
+.SH BACKEND SPECIFIC OPTIONS
+.B Scan Mode:
+
+.TP
+.B \-\-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.
+
+.TP
+.B \-\-mode Color|Gray|Lineart [default: Color]
+Selects the scan mode. Lineart means fully black and fully white pixels only.
+
+.TP
+.B \-\-threshold 0..100 (in steps of 1) [default 75]
+Select minimum-brightness percentage to get a white point, relevant only for Lineart
+
+.TP
+.B \-\-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.
+
+.PP
+.B Geometry:
+.TP
+.B \-l 0..216.069 [default 0]
+Top-left x position of scan area in millimeters.
+.TP
+.B \-t 0..297 [default 0]
+Top-left y position of scan area in millimeters.
+.TP
+.B \-x 0..216.069 [default 80]
+Width of scan-area in millimeters.
+.TP
+.B \-y 0..297 [default 100]
+Height of scan-area in millimeters.
+
+.SH FILES
+.TP
+.I /etc/sane.d/canon_lide70.conf
+The backend configuration file
+.TP
+.I /usr/lib64/sane/libsane\-canon_lide70.a
+The static library implementing this backend.
+.TP
+.I /usr/lib64/sane/libsane\-canon_lide70.so
+The shared library implementing this backend (present on systems that
+support dynamic loading).
+.SH ENVIRONMENT
+.TP
+.B 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:
+.br
+SANE_DEBUG_CANON_LIDE70=128 scanimage > /dev/null
+.SH 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
+.BR xsane (1)
+uses the 75 dpi mode for prescans. The problem is worse on the LiDE 600(F),
+where the offset is five millimeters.
+.PP
+It is recommended that in
+.BR xsane (1)
+the gamma value be set to approximately 1.7
+to get more realistic colors. This also wipes out some artifacts caused by
+the lack of real calibration.
+
+.SH "SEE ALSO"
+.BR sane (7),
+.BR sane\-usb (5),
+.BR sane\-find\-scanner (1),
+.BR scanimage (1),
+.BR xsane (1),
+.br
+http://www.juergen-ernst.de/info_sane.html
+
+.SH AUTHOR
+pimvantend, building upon pioneering work by Juergen Ernst.