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

       sane-mustek_usb - SANE backend for Mustek USB flatbed scanners

       The sane-mustek_usb library implements a	SANE (Scanner Access Now Easy)
       backend that provides access to Mustek USB flatbed scanners  (including
       a  clone	 from Trust).  At present, the following scanners are known to
       work more or less with this backend:

	      Mustek 600 CU
	      Mustek 1200 UB
	      Mustek 1200 CU
	      Mustek 1200 CU Plus
	      Trust Compact Scan USB 19200

       More  details  can  be  found  on  the  Mustek  USB  backend   homepage

       The  Mustek BearPaw 1200	and 2400 scanners are supported	by the plustek
       backend.	See sane-plustek(5) for	details. The Mustek BearPaw  1200F  is
       supported by the	MA-1509	backend. See sane-ma1509(5) for	details. Other
       Mustek  USB  scanners  are  supported  by  the  gt68xx	backend,   see

       This  backend  can only work with scanners that are already detected by
       the operating system. See sane-usb(5) for details.

       If you own a Mustek (or Trust) scanner other than the ones listed above
       that  works  with  this backend,	please let me know this	by sending the
       scanner's exact model name and the USB vendor and device	ids (e.g. from
       /proc/bus/usb/devices or	syslog)	to me.

       This backend expects device names of the	form:


       Where special is	a path-name for	the special device that	corresponds to
       a USB scanner.  With Linux, such	a device name could be	/dev/usb/scan-
       ner0 or /dev/usbscanner1, for example.

       For FreeBSD use /dev/uscanner0.

       The  contents  of the mustek_usb.conf file is a list of options and de-
       vice names that correspond to Mustek USB	 scanners.   Empty  lines  and
       lines  starting	with  a	hash mark (#) are ignored. If a	device name is
       placed in mustek_usb.conf, it must be followed by a line	containing the
       keyword option and an option specifying the scanner type. The following
       options can be used: 600cu, 1200cu, 1200cu_plus,	1200ub.	 For the Trust
       Compact Scan USB	19200 use `option 1200ub'.

       Instead	of  using  the device name, the	scanner	can be autodetected by
       usb vendor_id product_id	statements which  are  already	included  into
       mustek_usb.conf.	  This	is  only supported with	Linux 2.4.8 and	higher
       and all systems that support libsub. "vendor_id"	and  "product_id"  are
       hexadecimal  numbers that identify the scanner. If this doesn't work, a
       device name and the option specifying the scanner type must  be	placed
       in mustek_usb.conf as described above.

       The  global  option  max_block_size  can	be used	to limit the amount of
       data acquired in	one turn from the USB system. It may be	worth  trying,
       if USB errors occur.

       A sample	configuration file is shown below:

	      #	Comment
	      option max_block_size 1024
	      usb 0x055f 0x0001
	      option 600cu

       The  first  line	 is ignored. The second	line sets the buffer size to a
       maximum of 1024 bytes.  The third line tries to	autodetect  a  scanner
       with  vendor  id	 0x055f	 and  product  id 0x0001 (Mustek 1200 CU). The
       fourth line tells the backend to	attach to  /dev/usb/scanner0  and  the
       fifth line specifies that /dev/usb/scanner0 is a	Mustek 600 CU.

	      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   /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.

	      Value  Description
	      0	     no	output
	      1	     print fatal errors
	      2	     print important messages
	      3	     print non-fatal errors and	less important messages
	      4	     print all but debugging messages
	      5	     print high	level debugging	messages
	      6	     print medium level	debugging messages
	      7	     print low level debugging messages

	      Example: export SANE_DEBUG_MUSTEK_USB=4

       sane(7),	 sane-usb(5),  sane-mustek(5),	sane-mustek_pp(5),  sane-plus-
       tek(5), sane-gt68xx(5), sane-ma1509(5)

       Henning Meier-Geinitz <>
       This  backend  is based on the Mustek 1200ub backend from Mustek, main-
       tained by Tom Wang.

       These devices have a hardware bug: Once data is written to  them,  they
       can't  be  reset	(toggle	= DATA0). That means, any operation that tries
       to reset	the device will	result in running into timeouts.

       In earlier versions this	backend	failed when it was loaded  the	second
       time  in	some configurations. The only choice was to replug the scanner
       in this case. The backend uses a	workaround for that bug	now  but  it's
       only  tested on Linux. Reports for other	operating systems are appreci-

       More detailed bug information is	available at the Mustek	backend	 home-

				  13 Jul 2008		    sane-mustek_usb(5)


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