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sane-umax1220u(5)								sane-umax1220u(5)

       sane-umax1220u - SANE backend for the UMAX Astra 1220U scanner

       The  sane-umax1220 library implements a SANE (Scanner Access Now Easy) backend for the the
       UMAX Astra 1220U scanner.

       For the latest information on this  backend,  please  visit  http://umax1220u-sane.source-

       This  backend  may also be able to drive the UMAX Astra 2000U.  Some people are successful
       with it, others report that the colors come out terrible. Your milage may vary.

       From Stephane (the author of sane-umax_pp), I learned that there are  differences  in  the
       way  the  color calibration is performed on the 1220U and the 2000U and it may account for
       the problem.  Stephane's backend support the 2000P,  the  parallel  port  sibling  to  the
       2000U.  It  may	be possible to use ideas and code from Stephane's backend to add complete
       support for the 2000U to this backend. Since I do not have access to an Astra 2000U, I  do
       not plan to work on this -- any volunteers?

       The configuration file for this backend resides in      /etc/sane.d/umax1220u.conf.

       Its  contents  is  a  list  of  device names that correspond to UMAX Astra 1220U scanners.
       Empty lines and lines starting with a hash mark (#) are ignored.  A  sample  configuration
       file is shown below:

	#usb vendor product
	usb 0x1606 0x0010
	# Device list for non-linux systems

       When driving a Astra 2000U, use the product number 0x0030. See sane-usb(5) for information
       on how to set the access permissions on the usb device files.

       The backend configuration file:

       The static library implementing this backend:

       The shared library implementing this backend :
	(present on systems that support dynamic loading)

	If the library was compiled with debug support enabled, this  environment  variable  con-
       trols  the debug level for this backend. E.g., a value of 128 requests all debug output to
       be printed. Smaller levels reduce verbosity:

       SANE_DEBUG_UMAX1220U values

	Number	Remark
	1	print failures
	2	print information
	3	print high-level function calls
	4	print high-level function checkpoints
	9	print mid-level function calls
	10	print mid-level function checkpoints
	80	print protocol-level function entry
	90	print protocol-level function exit

	 export SANE_DEBUG_UMAX1220U=10

       600 dpi scanning may fail for large image sizes.

       If you keep getting I/O errors, try cycling the power on your scanner to reset it.

       There is no way to cancel a scan, since the driver ignores sane_cancel().

       If you try scanning an image which is too small, you will  get  I/O  errors.  Be  sure  to
       adjust the scan area before doing a scan, since by default, the scan area is zero.

       sane(7), sane-usb(5)

       For latest bug fixes and information see

       Marcio Luis Teixeira <marciot@users.sourceforge.net>


       When reporting bugs, please run the backend with SANE_DEBUG_UMAX1220U set to 10 and attach
       a copy of the log messages.

					    6 Jan 2002				sane-umax1220u(5)
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