sane-leo 5 "11 Jul 2008" "@PACKAGEVERSION@" "SANE Scanner Access Now Easy"
 sane-leo 
 NAME
sane-leo - SANE backend for LEO Technologies scanners

 DESCRIPTION
The
 sane-leo library implements a SANE (Scanner Access Now Easy) backend that
provides access to some LEO SCSI flatbed scanners. This backend
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
maintainer 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 resolutions
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
 @CONFIGDIR@/leo.conf supports only one information: the device name to use (eg
 /dev/scanner ). 


 FILES

 @LIBDIR@/libsane-leo.a The static library implementing this backend.


 @LIBDIR@/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
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.



 LIMITATIONS
The windows TWAIN driver has many more options than this SANE
backend. However they are only software adjustments. This backend only
implements 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