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sane-hp3900(5)		 SANE Scanner Access Now Easy		sane-hp3900(5)

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 hp3900 backend homepage http://source‐
       forge.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 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/arch_triplet/sane/libsane-hp3900.a
	      The static library implementing this backend.

       /usr/lib/arch_triplet/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.  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).

       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),
       http://sourceforge.net/projects/hp3900-series/  http://jkdsoftware.dyn‐
       dns.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)
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