NAME
sane-genesys - SANE backend for GL646 and GL841 based USB flatbed
scanners
DESCRIPTION
The sane-genesys library implements a SANE (Scanner Access Now Easy)
backend that provides access to USB flatbed scanners based on the
Genesys GL646 and GL841 chips. At present, the following scanners are
known to work with this backend:
Medion MD5345/MD6228/MD6274
Visioneer OneTouch 7100
Hewlett-Packard HP2300C
Visioneer Strobe XP100 (rev3)/XP200/XP300/Roadwarrior
Canon LiDE 35/40/50/60
Pentax DSmobile 600
Syscan/Ambir DocketPORT 485/487/665/685
Xerox Travel Scanner 100
This is stable software for supported models. But if you test new or
untested scanners, keep your hand at the scanner’s plug and unplug it,
if the head bumps at the end of the scan area.
If you own a scanner other than the ones listed above that works with
this backend, please let me know this by sending the scanner’s exact
model name and the USB vendor and device ids (e.g. from
/proc/bus/usb/devices, sane-find-scanner or syslog) to the sane-devel
mailing list. Even if the scanner’s name is only slightly different
from the models mentioned above, please let me know.
If you own a scanner that isn’t detected by the genesys backend but has
a GL646 or GL841 chipset, you can try to add it to the backend.
CALIBRATION
To give correct image quality, sheet fed scanners need to be calibrated
using the calibration sheet sold with the scanner. To do calibration,
you must insert this target in the feeder then start calibration either
by passing the --calibrate option to scanimage or by clicking on the
available ’calibrate’ button in the ’advanced options’ in a graphical
frontend. The result of the calibration is stored in a file in the home
directory of the user doing it. If you plug the scanner in another
machine or use it with another account, calibration will have to be
redone.
EXTRAS SCAN OPTIONS
--lamp-off-time number
The lamp will be turned off after the given time (in minutes).
A value of 0 means that the lamp won’t be turned off.
--threshold percent 0..100% (in steps of 1). Select minimum
brightness to get a white point. Pixels whith brightness below that
value will be scanned as black.
--disable-interpolation yes|no
When using high resolutions where the horizontal resolution is
smaller than vertical resolution, data is expanded by software to
preserve picture geometry. This can be disbled by this option to get
real scanned data.
--color-filter None|Red|Green|Blue
When using gray or lineart this option selects the used color.
Using a color filter will give a monochrome scan. CIS based scanners
can to true gray when no filter (None value) is selected.
SYSTEM ISSUES
This backend needs libusb-0.1.6 or later installed, and hasn’t tested
in other configuration than a linux kernel 2.6.9 or higher. However, it
should work any system with libusb where the SANE package can be
compiled. For setting permissions and general USB information look at
sane-usb(5).
CONFIGURATION
The contents of the genesys.conf file is a list of usb lines containing
vendor and product ids that correspond to USB scanners. The file can
also contain option lines. Empty lines and lines starting with a hash
mark (#) are ignored. The scanners are autodetected by usb vendor_id
product_id statements which are already included into genesys.conf.
"vendor_id" and "product_id" are hexadecimal numbers that identify the
scanner.
FILES
/etc/sane.d/genesys.conf
The backend configuration file (see also description of
SANE_CONFIG_DIR below).
/usr/lib/sane/libsane-genesys.a
The static library implementing this backend.
/usr/lib/sane/libsane-genesys.so
The shared library implementing this backend (present on systems
that support dynamic loading).
ENVIRONMENT
SANE_CONFIG_DIR
This environment variable specifies the list of directories that
may contain the configuration file. Under UNIX, 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_GENESYS
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. If the
debug level is set to 1 or higher, some debug options become
available that are normally hidden. Handle them with care. This
will print messages related to core genesys functions.
SANE_DEBUG_GENESYS_GL646
This environment variable controls the debug level for the
specific GL646 code part.
SANE_DEBUG_GENESYS_GL841
This environment variable controls the debug level for the
specific GL841 code part.
Example (full and highly verbose output for gl646):
export SANE_DEBUG_GENESYS=255
export SANE_DEBUG_GENESYS_GL646=255
CREDITS
Jack McGill for donating several sheetfed scanners, which made possible
to add support for them in the genesys backend.
SEE ALSO
sane(7), sane-usb(5)
AUTHOR
Oliver Rauch
Henning Meier-Geinitz <henning@meier-geinitz.de>
Gerhard Jaeger <gerhard@gjaeger.de>
Stéphane Voltz <stef.dev@free.fr>
Philipp Schmid <philipp8288@web.de>
Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
LIMITATIONS
Powersaving isn’t implemented for gl646 based scanner.
BUGS
Currently no known bug.
6 Oct 2009 sane-genesys(5)