4500C/4570C/5500C/5550C/5590/7650 Workgroup/Document scanners

       The sane-hp5590 library implements a SANE  (Scanner  Access  Now  Easy)
       backend  that  provides  access  to the following Hewlett-Packard Work-
       group/Document scanners:

              ScanJet 4500C
              ScanJet 4570C
              ScanJet 5500C
              ScanJet 5550C
              ScanJet 5590
              ScanJet 7650

       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.

       None required.

              The static library implementing this backend.

              The shared library implementing this backend (present on systems
              that support dynamic loading).

              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.  See
              used levels below.

              Level 10 - generic processing
              Level 20 - verbose backend messages
              Level 40 - HP5590 high-level commands
              Level 50 - HP5590 low-level (USB-in-USB) commands


              export SANE_DEBUG_HP5590=50

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