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)