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
   concerning 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
   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

          # 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.  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).

          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:

          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  sh 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_DEBUG_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
          scanners.   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 support 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
          compliant backend.


   sane(7), sane-scsi(5)


   Ingo Schneider and Karl Anders ygard.

                              10 Jul 2008                sane-agfafocus(5)


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.

Free Software

Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.

Free Books

The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.