NAME    [Toc]    [Back]

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

DESCRIPTION    [Toc]    [Back]

       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.sourceforge.net/.

UMAX ASTRA 2000U EXPERIMENTAL SUPPORT    [Toc]    [Back]

       This backend can also drive the UMAX Astra 2000U (sort of). You will be
       able to scan, but the colors  will  be  horrible.  From	Stephane  (the
       author  of  sane-umax_pp),  I learned that there are differences in the
       way the color calibration is performed. It may be possible to use ideas
       from  that  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?

CONFIGURATION    [Toc]    [Back]

       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
	/dev/scanner
	/dev/usb/scanner0

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

FILES    [Toc]    [Back]

       The backend configuration file:
	/etc/sane.d/umax1220u.conf

       The static library implementing this backend:
	/usr/lib/sane/libsane-umax1220u.a

       The shared library implementing this backend :
	/usr/lib/sane/libsane-umax1220u.so
	(present on systems that support dynamic loading)

ENVIRONMENT    [Toc]    [Back]

       SANE_DEBUG_UMAX1220U
	If the library was compiled with debug support enabled, this  environment
  variable controls 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

       Example:
	 export SANE_DEBUG_UMAX1220U=10

KNOWN BUGS    [Toc]    [Back]

       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.

SEE ALSO    [Toc]    [Back]

       sane(7), sane-usb(5)


       For latest bug fixes and information see
	      http://umax1220u-sane.sourceforge.net/

AUTHOR    [Toc]    [Back]

       Marcio Luis Teixeira <[email protected]>

EMAIL-CONTACT    [Toc]    [Back]

       [email protected]

REPORTING BUGS    [Toc]    [Back]

       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)