The sane-agfafocus library implements a SANE (Scanner Access Now Easy)
backend that provides access to AGFA Focus flatbed scanners. At
present, the following scanners are supported from this backend:
AGFA Focus GS Scanner (6 bit gray scale) (untested)
AGFA Focus Lineart Scanner (lineart) (untested)
AGFA Focus II (8 bit gray scale) (untested)
AGFA Focus Color (24 bit color 3-pass)
AGFA Focus Color Plus (24 bit color 3-pass)
Siemens S9036 (8 bit gray scale) (untested)
The driver supports line art, 6bpp and 8bpp gray, 18bpp and 24bpp color
If you own a scanner other than the ones listed above that works with
this backend, please let us know by sending the scanner's model name,
SCSI id, and firmware revision to firstname.lastname@example.org.
Have a look at http://www.sane-project.org/mailing-lists.html concern-
ing subscription to sane-devel.
All of these scanners are pre-SCSI-2, and do not even report properly
to SCSI Inquiry. This is typically evident in SCSI bus scans, where
the scanner will come up with only garbage as vendor and models
This backend expects device names of the form:
Where special is either the path-name for the special device that cor-
responds to a SCSI scanner. For SCSI scanners, the special device name
must be a generic SCSI device or a symlink to such a device. Under
Linux, such a device name could be /dev/sga or /dev/sge, for example.
See sane-scsi(5) for details.
The contents of the agfafocus.conf file is a list of device names that
correspond to AGFA Focus scanners. Empty lines and lines starting with
a hash mark (#) are ignored. A sample configuration file is shown
# this is a comment
The backend configuration file (see also description of
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 config-
uration 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 sepa-
rator 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
If the library was compiled with debug support enabled, this
environment variable controls the debug level for this backend.
E.g., a value of 128 requests all debug output to be printed.
Smaller levels reduce verbosity. SANE_DEBUG_AGFAFOCUS values:
0 print important errors (printed each time)
1 print errors
2 print sense
3 print warnings
4 print scanner-inquiry
5 print information
6 print less important information
7 print called procedures
8 print reader_process messages
10 print called sane-init-routines
11 print called sane-procedures
12 print sane infos
13 print sane option-control messages
Uploading of dither matrices and tonecurves has been implemented, but
so far has not proven to be useful for anything. For this reason these
options have been disabled.
The scanners that do not support disconnect have problems with SCSI
timeouts if the SCSI bus gets loaded, eg. if you do a kernel build at
the same time as scanning. To see if your scanner supports disconnect,
run "SANE_DEBUG_AGFAFOCUS=128 scanimage -L" in sh and look for the
If you have problems with SANE not detecting your scanner, make sure
the Artec backend is disabled. Somehow, this backend causes at least
my scanner not to respond correctly to SCSI inquiry commands.
The AGFA ACS and ARCUS scanners are similar to the FOCUS scan-
ners. The driver could probably be extended to support these
scanners without too many changes. I do not have access to such
scanners, and cannot add support for it. However, if you are in
possession of such a scanner, I could be helpful in adding sup-
port for these scanners.
The AGFA HORIZON scanners are SCSI-2 scanners, and it would
probably be easier to support these scanners in a SCSI-2 compli-
Ingo Schneider and Karl Anders Oygard.
10 Jul 2008 sane-agfafocus(5)
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