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sane-u12(5)		 SANE Scanner Access Now Easy		   sane-u12(5)

NAME
       sane-u12	 -  SANE  backend  for	Plustek	USB flatbed scanners, based on
       older parport designs

DESCRIPTION
       The sane-u12 library implements a SANE (Scanner Access Now Easy)	 back-
       end  that  provides  access  to USB flatbed scanners based on Plusteks'
       ASIC 98003 (parallel-port  ASIC)	 and  a	 GeneSys  Logics'  USB-parport
       bridge chip.

SUPPORTED DEVICES
       The  backend  is	 able  to support some early Plustek USB scanners that
       based their old parport design around the ASIC 98003 and	other rebadged
       Plustek devices.	The following tables will give you a short overview.

       If  your	Plustek	scanner	has another Product ID,	then the device	is NOT
       supported by this backend.

       Vendor Plustek -	ID: 0x07B3
       ----------------------------------------------------------
       Model:			Vendor-ID:	 Product-ID:
       ----------------------------------------------------------
       OpticPro	U12		0x07B3		 0x0001
       OpticPro	U1212		0x07B3		 0x0001
       OpticPro	UT12		0x07B3		 0x0001

       Vendor KYE/Genius
       --------------------------------------------------------
       USB Model:		Vendor-ID:	 Product-ID:
       --------------------------------------------------------
       ColorPage Vivid III USB	0x07B3		 0x0001
       ColorPage HR6 V1		0x0458		 0x2004

CONFIGURATION
       To use your scanner with	this backend, you need at least	two entries in
       the configuration file /usr/local/etc/sane.d/u12.conf

	      [usb] vendor-id product-id
	      device /dev/usbscanner

       [usb]  tells the	backend, that the following devicename (here /dev/usb-
       scanner)	has to be interpreted as USB scanner device.  If  vendor-  and
       product-id  has not been	specified, the backend tries to	detect this by
       its own.	If device is set to auto then  the  next  matching  device  is
       used.

       The Options:

       option warmup t
	      t	specifies the warmup period in seconds

       option lampOff t
	      t	 is the	time in	seconds	for switching off the lamps in standby
	      mode

       option lOffonEnd	b
	      b	specifies the behaviour	when closing the backend, 1 -->	switch
	      lamps off, 0 --> do not change lamp status

       See the u12.conf	file for examples.

       Note: You have to make sure, that the USB subsystem is loaded correctly
       and  you	 have  access  to  the	device-node.  For  more	 details   see
       sane-usb(5)  manpage.  You might	use sane-find-scanner(1) to check that
       you have	access to your device.

       Note:
       If there's no configuration file, the backend defaults to device	auto

FILES
       /usr/local/etc/sane.d/u12.conf
	      The backend configuration	file

       /usr/local/lib/sane/libsane-u12.a
	      The static library implementing this backend.

       /usr/local/lib/sane/libsane-u12.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   /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).

       SANE_DEBUG_U12
	      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.

	      Example: export SANE_DEBUG_U12=10

SEE ALSO
       sane(7),	sane-usb(5), sane-plustek(5),  sane-find-scanner(1),  xscanim-
       age(1), scanimage(1)
       /usr/local/share/doc/sane-backends/u12/U12.changes

CONTACT	AND BUG-REPORTS
       Please send any information and bug-reports to:
       SANE Mailing List

       Additional info and hints can be	obtained from our
       Mailing-List archive at:
       http://www.sane-project.org/mailing-lists.html

       To  obtain debug	messages from the backend, please set the environment-
       variable	SANE_DEBUG_U12	before	calling	 your  favorite	 scan-frontend
       (i.e.  xscanimage(1)), i.e.:

       export SANE_DEBUG_U12=20	; xscanimage

       The value controls the verbosity	of the backend.

KNOWN BUGS & RESTRICTIONS
       * The driver is in alpha	state, so please don't expect too much!!!

       *  When	using  libusb,	it  might be, that the backend hangs.  In that
       case, reconnect the scanner.

				  14 Jul 2008			   sane-u12(5)

NAME | DESCRIPTION | SUPPORTED DEVICES | CONFIGURATION | FILES | ENVIRONMENT | SEE ALSO | CONTACT AND BUG-REPORTS | KNOWN BUGS & RESTRICTIONS

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