sane-hp4200 - SANE backend for Hewlett-Packard 4200 scanners


   The  sane-hp4200  library  implements  a SANE (Scanner Access Now Easy)
   backend that provides  access  to  the  following  Hewlett-Packard  USB
   flatbed scanners:

          ScanJet 4200 C
          ScanJet 4200 Cxi
          ScanJet 4200 Cse

   More   details   can   be   found   on   the  hp4200  backend  homepage

   This is BETA software. Keep your hand at the scanner's plug and  unplug
   it, if the head bumps at the end of the scan area.

   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 hp4200.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  4200
   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 hp4200.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, e.g.  /dev/usb/scanner0.


          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_HP4200=4


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


   Adrian  Perez  Jorge,  Andrew John Lewis, Arnar Mar Hrafnkelsson, Frank
   Zago, Henning Meier-Geinitz. Current maintainer: Henning  Meier-Geinitz


   Tested only with Linux.

   Only 8 bit color mode works.

   Scanning is slow due to backtracking.

   Send     bug     reports    to    the    sane-devel    mailing    list:

                              13 Jul 2008                   sane-hp4200(5)


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