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sane-agfafocus(5)	 SANE Scanner Access Now Easy	     sane-agfafocus(5)

       sane-agfafocus -	SANE backend for AGFA Focus flatbed scanners

       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
       Have  a look at 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 the path-name for the special device that corresponds
       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 be-

	      #	this is	a comment

	      The  backend  configuration  file	 (see  also   description   of
	      SANE_CONFIG_DIR below).

	      The static library implementing this backend.

	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

	      This environment variable	specifies the list of directories that
	      may contain the configuration file.  On *NIX systems, the	direc-
	      tories are separated by a	colon (`:'), under OS/2, they are sep-
	      arated  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/lo-
	      cal/etc/sane.d.  If the value of the environment	variable  ends
	      with  the	directory separator character, then the	default	direc-
	      tories are searched after	the explicitly specified  directories.
	      For example, setting SANE_CONFIG_DIR to "/tmp/config:" would re-
	      sult in directories tmp/config, ., and /usr/local/etc/sane.d be-
	      ing searched (in this order).

	      If the library was compiled with debug support enabled, this en-
	      vironment	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:

	      Number  Remark
	       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 a terminal and look for
       the "disconnect:" line.

       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.

       If you encounter	a bug please set  the  environment  variable  SANE_DE-
       BUG_AGFAFOCUS  to 128 and try to	regenerate the problem.	Then send me a
       report with the log attached.

       If you encounter	a SCSI bus error or trimmed  and/or  displaced	images
       please  also  set the environment variable SANE_DEBUG_SANEI_SCSI	to 128
       before sending me the report.

       More scanners?

	      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-
	      ant backend.

       sane(7),	sane-scsi(5)

       Ingo Schneider and Karl Anders Oygard.

				  10 Jul 2008		     sane-agfafocus(5)


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