sane-hp3900 - SANE backend for RTS8822 chipset based scanners


   The  sane-hp3900  library  implements  a SANE (Scanner Access Now Easy)
   backend that provides access at least  to  the  following  USB  flatbed

          Model:                     Chipset:
          ------                     --------
          HP ScanJet 3800            RTS8822BL-03A
          HP ScanJet 3970            RTS8822L-01H
          HP ScanJet 4070 Photosmart RTS8822L-01H
          HP ScanJet 4370            RTS8822L-02A
          HP ScanJet G2710           RTS8822BL-03A
          HP ScanJet G3010           RTS8822L-02A
          HP ScanJet G3110           RTS8822L-02A
          UMAX Astra 4900/4950       RTS8822L-01H *
          BenQ 5550                  RTS8823L-01E *

   More   details   can   be   found   on   the  hp3900  backend  homepage

   This is ALPHA software. Keep your hand at the scanner's plug and unplug
   it, if scanner does not start to scan. See also the BUGS section.

   If  you  own a scanner other than the ones listed above that works with
   this backend, please let us 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 us. Even if  the
   scanner's  name  is  only  slightly different from the models mentioned
   above, please let us know.


   The contents of the hp3900.conf file is a list of usb lines  containing
   vendor  and  product  ids that correspond to USB scanners. The file can
   also contain the names of device files that correspond to  an  HP  39XX
   scanner.   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 hp3900.conf.  "vendor_id"
   and "product_id" are hexadecimal numbers that identify the scanner.  If
   autodetection does not work, add the device name of your scanner to the
   configuration file,


          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.
          Higher debug levels increase the verbosity of the output.

          Example: export SANE_DEBUG_HP3900=4


   sane(7), sane-usb(5),


   Jonathan Bravo Lopez <>


   Scanning is only tested with Linux/ix86/gcc. Be careful when testing on
   other  operating  systems  and  especially on big-endian platforms. The
   scanner may get wrong data.

                              06 Jan 2009                   sane-hp3900(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.