Provided by: libsane-common_1.3.1-4build1_all bug

NAME
       sane-hp3900 - SANE backend for RTS8822 chipset based scanners


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

              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     sane-hp3900(5)     backend     homepage
       http://sourceforge.net/projects/hp3900-series/.

       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(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  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,


FILES
       /etc/sane.d/hp3900.conf
              The backend configuration file (see also description of SANE_CONFIG_DIR below).

       /usr/lib/x86_64-linux-gnu/sane/libsane-hp3900.a
              The static library implementing this backend.

       /usr/lib/x86_64-linux-gnu/sane/libsane-hp3900.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_HP3900
              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


SEE ALSO
       sane(7), sane-usb(5), sane-find-scanner(1),
       http://sourceforge.net/projects/hp3900-series/
       http://jkdsoftware.dyndns.org/drupal/?q=es/books/151


AUTHOR
       Jonathan Bravo Lopez <jkdsoft@gmail.com>


BUGS
       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)