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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 library. If your system sup‐
       ports  libieee1284  too,	 this  backend	should	work.  If  you	ported
       libieee1284  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 expects.
       It seems to be system dependent.	 Under Linux it's parport0,  parport1,

       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 is not implemented for now. So does gamma  correction  and
       calibration.  I'll handle it in future versions.	 Native resolution for
       this scanner is 300 DPI. Other modes could be jagged in some ways.

	      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.  Under UNIX, the directories
	      are separated by a colon (`:'), under OS/2, they	are  separated
	      by a semi-colon (`;').  If this variable is not set, the config‐
	      uration file is searched in two default directories: first,  the
	      current	 working   directory   (".")   and   then   in	 /sys‐
	      tem/resources/sane-backends/1.0.18/etc/sane.d.  If the value  of
	      the environment variable ends with the directory separator char‐
	      acter, 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	 "/system/resources/sane-back‐
	      ends/1.0.18/etc/sane.d" being searched (in this order).

       SEE ALSO

       Max Vorobiev
       Man page mostly based on

sane-backends 1.0.18		  24 Feb 2002			sane-hpsj5s(5)

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