Provided by: libsane_1.0.17-1ubuntu4_i386 bug

NAME

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

DESCRIPTION

       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

       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?

CONFIGURATION

       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  sane-
       usb(5)  for information on how to set the access permissions on the usb
       device files.

FILES

       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

       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

       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

       sane(7), sane-usb(5)

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

AUTHOR

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

EMAIL-CONTACT

       umax1220u-sane-devel@lists.sourceforge.net

REPORTING BUGS

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