sane-canon630u(5)

1sane-canon630u(5)        SANE Scanner Access Now Easy        sane-canon630u(5)
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NAME

6       sane-canon630u - SANE backend for the Canon 630u USB flatbed scanner
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DESCRIPTION

9       The  sane-canon630u library implements a SANE (Scanner Access Now Easy)
10       backend that provides access to the following Canon flatbed scanners:
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12              CanoScan 630u
13              CanoScan 636u
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15       Color scanning is supported at 75, 150, 300, and 600 dpi, and gamma and
16       analog gain are adjustable.
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18       TESTERS  ARE WELCOME. Send your bug reports and comments to Nathan Rut‐
19       man <nthn1@yahoo.com>.
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CONFIGURATION

22       The contents of the canon630u.conf file is a list of device names  that
23       correspond  to Canon USB scanners.  Empty lines and lines starting with
24       a hash mark (#) are ignored.  Only one device name  can  be  listed  in
25       canon630u.conf.  The program sane-find-scanner(1) helps to find out the
26       correct device. Under Linux, such a device name could be /dev/usb/scan‐
27       ner0 for example.  See sane-usb(5) for details.
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29       This  product-specific  scanner  driver uses the lower-level kernel USB
30       driver    "scanner".     Check    for     "Driver=usbscanner"     under
31       /proc/bus/usb/devices.   If "Driver=(none)", try forcing it with insmod
32       scanner vendor=0x04a9 product=0x2204
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NOTES

35       Due to Canon's unwillingness to  provide  scanner  documentation,  this
36       software was developed by analyzing the USB traffic of the Windows 2000
37       driver.  So things like the calibration procedure I kind of made up; it
38       seems to work for my scanner.  If you have complaints, let me know.
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40       This  driver  requires the ability to send USB Control Messages, avail‐
41       able in kernel 2.4.12 or later.
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43       Some users have reported that this driver doesn't work  at  all.   This
44       seems  to  be  a  hardware specific issue, although I dsane-uson't know
45       what exactly the problem is.  If you are having problems,  please  send
46       me  the  info in /proc/bus/usb/devices, /proc/pci, the kernel scanner.c
47       driver version from /var/log/messages, and  the  output  from  SANE_DE‐
48       BUG_CANON630U=12 scanimage > /dev/null
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FILES

51       /etc/sane.d/canon630u.conf
52              The   backend   configuration  file  (see  also  description  of
53              SANE_CONFIG_DIR below).
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55       /usr/lib64/sane/libsane-canon630u.a
56              The static library implementing this backend.
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58       /usr/lib64/sane/libsane-canon630u.so
59              The shared library implementing this backend (present on systems
60              that support dynamic loading).
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62       /tmp/canon.cal
63              The  calibration  file used to normalize pixel brightness.  This
64              is calculated every time the scanner is first used after it  has
65              lost power.  Deleting this file will force recalibration.
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ENVIRONMENT

68       SANE_CONFIG_DIR
69              This environment variable specifies the list of directories that
70              may contain the configuration file. On *NIX systems, the  direc‐
71              tories are separated by a colon (`:'), under OS/2, they are sep‐
72              arated by a semi-colon (`;').  If this variable is not set,  the
73              configuration  file  is  searched  in  two  default directories:
74              first,  the  current  working  directory  (".")  and   then   in
75              /etc/sane.d.  If the value of the environment variable ends with
76              the directory separator character, then the default  directories
77              are  searched  after  the explicitly specified directories.  For
78              example, setting SANE_CONFIG_DIR to "/tmp/config:" would  result
79              in directories tmp/config, ., and /etc/sane.d being searched (in
80              this order).
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82       SANE_DEBUG_CANON630U
83              If the library was compiled with debug support enabled, this en‐
84              vironment  variable  controls  the debug level for this backend.
85              Higher debug levels increase the verbosity of the output.
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87              Example:
88              SANE_DEBUG_CANON630U=12 scanimage > /dev/null
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AUTHOR

95       Nathan Rutman
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99                                  11 Jul 2008                sane-canon630u(5)