sane-hpsj5s(5)           SANE Scanner Access Now Easy           sane-hpsj5s(5)


       sane-hpsj5s - SANE backend for HP ScanJet 5S sheet-fed scanner


       The  sane-hpsj5s  library  implements  a SANE (Scanner Access Now Easy)
       backend that provides access to a parallel port Hewlett-Packard ScanJet
       5S scanner.

       IMPORTANT:  this  is  alpha  code. Don't expect this to work correctly.
       Many functions are missing, others contain errors. In some cases,  your
       computer might even hang. It cannot be excluded (although I consider it
       extremely improbable) that your scanner will be damaged.

       LIMITATIONS: For now this backend works only on Linux.  This limitation
       is due to dependence on the libieee1284(3) library. If your system sup-
       ports libieee1284(3) too, this backend should work. If you  ported  li-
       bieee1284(3)  for your platform, please let me know. Your system should
       support EPP (or EPP+ECP) mode to operate this scanner. Future  versions
       will  support ECP and SPP (Nibble and Byte) modes also. It's planned to
       support scanners not only at daisy-chain position 0, but anywhere. Sup-
       port for multiple scanners could be implemented too.

       Current version implements only gray scale scanning. True Color and B/W
       modes are not supported for now.

       That said, TESTERS ARE WELCOME. Send your bug reports and  comments  to
       Max Vorobiev <>.


       This backend expects device names of the form:


       Where  special  is  the  parallel port name in form, libieee1284(3) ex-
       pects. It seems to be system dependent. Under Linux it's parport0, par-
       port1, etc.


       The  contents  of  the hpsj5s.conf file is a list of parport names that
       correspond to HP ScanJet 5S scanners.  Empty lines and  lines  starting
       with  a  hash mark (#) are ignored.  Only one device name can be listed
       in hpsj5s.conf for this moment.  Future  versions  will  support  daisy
       chain selection.


       It  seems  that  HP  ScanJet 5S scanner uses software noise correction.
       This feature, along with gamma correction and calibration, are not  im-
       plemented  for  now.   They will be handled in future versions.  Native
       resolution for this scanner is 300 DPI.  Other modes may present alias-
       ing artifacts.


              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.  On *NIX systems, the direc-
              tories are separated by a colon (`:'), under OS/2, they are sep-
              arated 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  /usr/lo-
              cal/etc/sane.d.   If  the value of the environment variable ends
              with the directory separator character, then the default  direc-
              tories  are searched after the explicitly specified directories.
              For example, setting SANE_CONFIG_DIR to "/tmp/config:" would re-
              sult in directories tmp/config, ., and /usr/local/etc/sane.d be-
              ing searched (in this order).

              If the library was compiled with debug support enabled, this en-
              vironment  variable  controls  the debug level for this backend.
              Higher debug levels increase the verbosity of the output.


       sane(7), libieee1284(3)


       Max Vorobiev
       Man page mostly based on

                                  13 Jul 2008                   sane-hpsj5s(5)

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