sane-canon630u(5)

💖 NAME 💖

okay so bestie, sane-canon630u is the SANE backend for the Canon 630u USB flatbed scanner. That’s the whole name vibe: SANE backend, Canon 630u, USB flatbed scanner. 🫶

✨ DESCRIPTION ✨

The sane-canon630u library implements a SANE (Scanner Access Now Easy) backend that gives you access to these 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. Slay. 🌈

TESTERS ARE WELCOME. Fr fr, 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 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

🦋 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 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

🌸 FILES 🌸

• /etc/sane.d/canon630u.conf — the backend configuration file (see also description of SANE_CONFIG_DIR below).
• /usr/lib64/sane/libsane-canon630u.a — the static library implementing this backend.
• /usr/lib64/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 recalibration.

💅 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 directory (".") 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 order). 🧚
• 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

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That’s the whole page, bestie! Source/version: sane-canon630u(5) — date: 11 Jul 2008. Mwah 💋✨