NAME

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

DESCRIPTION

       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 http://hp4200-backend.sourceforge.net/.

       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(1) or syslog) to us. Even if the scanner's name is only slightly
       different from the models mentioned above, please let us know.

CONFIGURATION

       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.

FILES

       /etc/sane.d/hp4200.conf
              The backend configuration file (see also description of SANE_CONFIG_DIR below).

       /usr/lib/x86_64-linux-gnu/sane/libsane-hp4200.a
              The static library implementing this backend.

       /usr/lib/x86_64-linux-gnu/sane/libsane-hp4200.so
              The shared library implementing this backend (present on systems that support dynamic loading).

ENVIRONMENT

       SANE_CONFIG_DIR
              This  environment  variable  specifies  the list of directories that may contain the configuration
              file.  On *NIX systems, 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).

       SANE_DEBUG_HP4200
              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

SEE ALSO

       sane(7), sane-usb(5), sane-find-scanner(1),
       http://hp4200-backend.sourceforge.net/

AUTHOR

       Adrian Perez Jorge, Andrew John Lewis, Arnar Mar Hrafnkelsson, Frank Zago, Henning Meier-Geinitz. Current
       maintainer: Henning Meier-Geinitz <henning@meier-geinitz.de>.

BUGS

       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: sane-devel@alioth-lists.debian.net.

                                                   13 Jul 2008                                    sane-hp4200(5)