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

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

DESCRIPTION
       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 <pcwizard@yandex.ru>.

DEVICE NAMES
       This backend expects device names of the form:

	      special

       Where  special  is the parallel port name in form, libieee1284 expects.
       It seems to be system dependent.	 Under Linux it's parport0,  parport1,
       etc.

CONFIGURATION
       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.

TIPS
       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.

FILES
       /etc/sane.d/hpsj5s.conf
	      The  backend  configuration  file	 (see  also   description   of
	      SANE_CONFIG_DIR below).

       /usr/lib*/sane/libsane-hpsj5s.a
	      The static library implementing this backend.

       /usr/lib*/sane/libsane-hpsj5s.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.  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 /etc/sane.d.	If the
	      value of the environment variable ends with the directory	 sepa‐
	      rator 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).

       SEE ALSO
	      sane(7)
	      http://hpsj5s.sourceforge.net
	      http://cyberelk.net/tim/libieee1284

AUTHOR
       Max Vorobiev
       Man page mostly based on canon.man

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