sane-avision(5) SANE Scanner Access Now Easy sane-avision(5)NAMEsane-avision - SANE backend for original Avision and Avi-
sion OEM scanners (HP, Minolta, Mitsubishi, UMAX and pos-
sibly more) flatbed scanners
ABOUT THIS FILE
This file only is a short descripton of the avision-back-
end for sane!
DESCRIPTION
The sane-avision library implements a SANE (Scanner Access
Now Easy) backend that provides access to various Avision
scanners and the Avision OEM scanners labelled by HP,
Minolta, Mitsubishi or Fujitsu.
CONFIGURATION
The configuration file for this backend resides in
/usr/freeware/etc/sane.d/avision.conf.
Its contents is a list of device names that correspond to
Avision and Avision compatible scanners and backend-
options. Empty lines and lines starting with a hash mark
(#) are ignored. A sample configuration file is shown
below:
I suggest you hold one hand on the power-button of the
scanner while you try the first scans!
# this is a comment
option force-a4
option disable-gamma-table
option disable-calibration
option one-calib-only
option old-calibration
#scsi Vendor Model Type Bus Channel ID LUN
scsi AVISION
scsi HP
scsi /dev/scanner
usb 0x03f0 0x0701
- force-a4:
Forces the backend to overwrite the scanable area
returned by the scanner. This might be needed for
the AV 630 which returns no area - or newer scanners
which retun the area in a unkown format our backend
doesn't recongize yet.
- disable-gamma-table:
Disables the usage of the scanner's gamma-table. You
might try this if your scans hang or only produces
random garbage.
- disable-calibration:
Disables the scanner's color calibration. You
might try this if your scans hang or only produces
random garbage.
- one-calib-only:
When this option is enabled, the backend will only
perform a calibration when the backend is initialized
and not before each scan. This might extend the life
of the CCD, but does not work reliable with the newer
USB scanners (they hang sometimes or return garbage
image data). So this option should be used with care.
- old-calibration:
This enables the use of the old calibration code for
testing purposes.
Note: Any option above modifies the default code-flow
for your scanner. The options should only be used
when you encounter problems with the default be-
haviour of the backend. Please report the need of
options to the backend-author so the backend can
be fixed as soon as possible.
DEVICE NAMES
This backend expects device names of the form:
scsi special usb special
Where special is the path-name for the device that corre-
sponds to a SCSI scanner or the USB vendor/product ID pair
corresponding to the USB scanner. The special device name
must be a generic SCSI device or a symlink to such a
device. The program sane-find-scanner helps to find out
the correct device. Under Linux, such a device name could
be /dev/sg0 or /dev/sga, for example. See sane-scsi(5)
for details.
Note: Since the backend now includes native USB access,
it is no longer needed - even considered obsolete -
to access the scanner via the SCSI emulation (named
hpusbscsi on Linux) for Avision USB devices such as
the HP 53xx, HP 74xx or Minolta film-scanners.
A list with supported devices is built into the avision
backend so
normally specifying an ID should not be necessary.
FILES
/usr/freeware/etc/sane.d/avision.conf
The backend configuration file (see also descrip-
tion of SANE_CONFIG_DIR below).
/usr/freeware/lib32/sane/libsane-avision.a
The static library implementing this backend.
/usr/freeware/lib32/sane/libsane-avision.so
The shared library implementing this backend (pre-
sent 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 /usr/freeware/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 spec-
ified directories. For example, setting SANE_CON-
FIG_DIR to "/tmp/config:" would result in directo-
ries "tmp/config", ".", and "/usr/free-
ware/etc/sane.d" being searched (in this order).
SANE_DEBUG_AVISION
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. The debug
level 7 is the author's prefered value to debug
backend problems.
Example: export SANE_DEBUG_AVISION=7
SEE ALSOsane(7), sane-scsi(5)
http://drocklinux.dyndns.org/rene/avision/index.html
AUTHOR
Ren Rebe and Meino Christian Cramer
sane-backends 1.0.12 04 Mar 2003 sane-avision(5)
