sane-canon630u

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

NAME

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

DESCRIPTION

   The sane-canon630u library implements a SANE (Scanner Access Now Easy) backend that provides access to the following Canon flatbed scanners:

          CanoScan 630u
          CanoScan 636u

   Color scanning is supported at 75, 150, 300, and 600 dpi, and gamma and analog gain are adjustable.

   TESTERS ARE WELCOME. Send your bug reports and comments to Nathan Rutman <nthn1@yahoo.com>.

CONFIGURATION

   The  contents  of  the canon630u.conf file is a list of device names that correspond to Canon USB scanners.  Empty lines and lines starting with a hash mark (#) are ignored.  Only one
   device name can be listed in canon630u.conf.  The program sane-find-scanner(1) helps to find out the correct device. Under Linux, such a device name could be /dev/usb/scanner0 for ex
   ample.  See sane-usb(5) for details.

   This product-specific scanner driver uses the lower-level kernel USB driver "scanner".  Check for "Driver=usbscanner" under /proc/bus/usb/devices.  If "Driver=(none)", try forcing  it
   with insmod scanner vendor=0x04a9 product=0x2204

NOTES

   Due  to  Canon's  unwillingness  to provide scanner documentation, this software was developed by analyzing the USB traffic of the Windows 2000 driver.  So things like the calibration
   procedure I kind of made up; it seems to work for my scanner.  If you have complaints, let me know.

   This driver requires the ability to send USB Control Messages, available in kernel 2.4.12 or later.

   Some users have reported that this driver doesn't work at all.  This seems to be a hardware specific issue, although I dsane-uson't know what exactly the problem is.  If you are  hav
   ing  problems,  please  send  me  the info in /proc/bus/usb/devices, /proc/pci, the kernel scanner.c driver version from /var/log/messages, and the output from SANE_DEBUG_CANON630U=12
   scanimage > /dev/null

FILES

   /etc/sane.d/canon630u.conf
          The backend configuration file (see also description of SANE_CONFIG_DIR below).

   /usr/lib/x86_64-linux-gnu/sane/libsane-canon630u.a
          The static library implementing this backend.

   /usr/lib/x86_64-linux-gnu/sane/libsane-canon630u.so
          The shared library implementing this backend (present on systems that support dynamic loading).

   /tmp/canon.cal
          The calibration file used to normalize pixel brightness.  This is calculated every time the scanner is first used after it has lost power.  Deleting this file will force recal
          ibration.

ENVIRONMENT

   SANE_CONFIG_DIR
          This environment variable specifies the list of directories that may contain the configuration file. On *NIX systems, the directories are separated  by  a  colon  (`:'),  under
          OS/2,  they  are separated by a semi-colon (`;').  If this variable is not set, the configuration file is searched in two default directories: first, the current working direc
          tory (".") and then in /etc/sane.d.  If the value of the environment variable ends with the directory separator character, then the default directories are searched  after  the
          explicitly specified directories.  For example, setting SANE_CONFIG_DIR to "/tmp/config:" would result in directories tmp/config, ., and /etc/sane.d being searched (in this or
          der).

   SANE_DEBUG_CANON630U
          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_CANON630U=12 scanimage > /dev/null

SEE ALSO

   sane(7), sane-usb(5), sane-find-scanner(1)
   http://canon-fb630u.sourceforge.net/

AUTHOR

   Nathan Rutman

                                                                                      11 Jul 2008                                                                        sane-canon630u(5)