sane-leo.5

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

NAME

 sane-leo - SANE backend for LEO Technologies scanners

DESCRIPTION

 The sane-leo library implements a SANE (Scanner Access Now Easy) back-
 end that provides access to some LEO SCSI flatbed scanners. This back-
 end should be considered beta-quality software! LEO scanners were also
 sold under the Across Technologies brand.
 The scanners that should work with this backend are:
 Vendor Model status
 ---------------------- -----------
 Across FS-1130 tested
 LEO S3 tested
 The options the backend supports can either be selected through command
 line options to programs like scanimage(1) or through GUI elements in
 xscanimage(1) or xsane(1).
 If you have any strange behavior, please report to the backend main-
 tainer or to the SANE mailing list.
 Valid command line options and their syntax can be listed by using
 scanimage --help -d leo
 Scan Mode
 --mode selects the basic mode of operation of the scanner. Valid
 choices are Black & White, Grayscale and Color. The Black &
 White mode is black and white only (1 bit). Grayscale mode will
 produce 256 levels of gray (8 bits). Color mode will produce a
 24 bit color image.
 --resolution
 selects the resolution for a scan. The scanner can do all reso-
 lutions between 1 and 300, in increments of 1.
 Geometry options
 -l -t -x -y
 control the scan area: -l sets the top left x coordinate, -t the
 top left y coordinate, -x selects the width and -y the height of
 the scan area. All parameters are specified in millimeters by
 default.
 Enhancement options
 --custom-gamma
 (grayscale and color mode only) allows the user to specify a
 gamma table (see the next 3 parameters).
 --red-gamma-table
 (color mode only) can be used to download a user defined gamma
 table for the red channel. The table must be 256 bytes long.
 --green-gamma-table
 (color mode only) can be used to download a user defined gamma
 table for the green channel. The table must be 256 bytes long.
 --blue-gamma-table
 (color mode only) can be used to download a user defined gamma
 table for the blue channel. The table must be 256 bytes long.
 --halftone
 (Black & White only) select the halftone mask to use. Possible
 values are Diamond, 8x8 Coarse Fatting, 8x8 Fine Fatting, 8x8
 Bayer and 8x8 Vertical Line.
 --preview
 requests a preview scan. The resolution used for that scan is 28
 dpi and the scan area is the maximum allowed. The scan mode is
 user selected. The default is "no".

CONFIGURATION FILE

 The configuration file /usr/local/etc/sane.d/leo.conf supports only one
 information: the device name to use (eg /dev/scanner).

FILES

 /usr/local/lib/sane/libsane-leo.a
 The static library implementing this backend.
 /usr/local/lib/sane/libsane-leo.so
 The shared library implementing this backend (present on systems
 that support dynamic loading).

ENVIRONMENT

 SANE_DEBUG_LEO
 If the library was compiled with debug support enabled, this en-
 vironment 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.

LIMITATIONS

 The windows TWAIN driver has many more options than this SANE backend.
 However they are only software adjustments. This backend only imple-
 ments what the scanner can support.

BUGS

 None known.

SEE ALSO

 sane-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)

AUTHOR

 The package is actively maintained by Frank Zago.
 http://www.zago.net/sane/#leo
 11 Jul 2008 sane-leo(5)

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