Section: SANE Scanner Access Now Easy (5)
Updated: 11 Jul 2008
The sane-canon630u library implements a SANE (Scanner Access Now Easy) backend that provides access to the following Canon flatbed scanners:
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 <email@example.com>
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 helps to find out the correct device. Under Linux, such a device name could be /dev/usb/scanner0 for example. 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"
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 don't know what exactly the problem is. If you are having 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"
SANE_DEBUG_CANON630U=12 scanimage > /dev/null
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