sane-leo(5)

1sane-leo(5)              SANE Scanner Access Now Easy              sane-leo(5)
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NAME

6       sane-leo - SANE backend for LEO Technologies scanners
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DESCRIPTION

9       The  sane-leo library implements a SANE (Scanner Access Now Easy) back‐
10       end that provides access to some LEO SCSI flatbed scanners. This  back‐
11       end  should be considered beta-quality software! LEO scanners were also
12       sold under the Across Technologies brand.
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14       The scanners that should work with this backend are:
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16                 Vendor Model           status
17              ----------------------  -----------
18                Across FS-1130          tested
19                LEO S3                  tested
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21       The options the backend supports can either be selected through command
22       line  options  to programs like scanimage(1) or through GUI elements in
23       xscanimage(1) or xsane(1).
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25       If you have any strange behavior, please report to  the  backend  main‐
26       tainer or to the SANE mailing list.
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28       Valid command line options and their syntax can be listed by using
29              scanimage --help -d leo
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32       Scan Mode
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35       --mode selects the basic mode of operation of the scanner valid choices
36              are Black & White , Grayscale and Color The Black &  White  mode
37              is black and white only (1 bit). Grayscale will produce 256 lev‐
38              els of gray (8 bits). Color will produce a 24 bits color image.
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41       --resolution
42              selects the resolution for a scan. The scanner can do all  reso‐
43              lutions between 1 and 300, in increments of 1.
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47       Geometry options
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50       -l -t -x -y
51              control the scan area: -l sets the top left x coordinate, -t the
52              top left y coordinate, -x selects the width and -y the height of
53              the  scan  area.  All parameters are specified in millimeters by
54              default.
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58       Enhancement options
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61       --custom-gamma
62              (grayscale and color mode only) allows the  user  to  specify  a
63              gamma table (see the next 3 parameters).
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66       --red-gamma-table
67              (color  mode  only) can be used to download a user defined gamma
68              table for the red channel. The table must be 256 bytes long.
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71       --green-gamma-table
72              (color mode only) can be used to download a user  defined  gamma
73              table for the green channel. The table must be 256 bytes long.
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76       --blue-gamma-table
77              (color  mode  only) can be used to download a user defined gamma
78              table for the blue channel. The table must be 256 bytes long.
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81       --halftone
82              (Black & White only) select the halftone mask to  use.  Possible
83              values are Diamond , 8x8 Coarse Fatting , 8x8 Fine Fatting , 8x8
84              Bayer and 8x8 Vertical Line
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87       --preview
88              requests a preview scan. The resolution used for that scan is 28
89              dpi  and  the scan area is the maximum allowed. The scan mode is
90              user selected. The default is "no".
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CONFIGURATION FILE

95       The configuration file /etc/sane.d/leo.conf supports only one  informa‐
96       tion: the device name to use (eg /dev/scanner).
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FILES

101       /usr/lib64/sane/libsane-leo.a
102              The static library implementing this backend.
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104       /usr/lib64/sane/libsane-leo.so
105              The shared library implementing this backend (present on systems
106              that support dynamic loading).
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ENVIRONMENT

111       SANE_DEBUG_LEO
112              If the library was compiled with  debug  support  enabled,  this
113              environment  variable controls the debug level for this backend.
114              E.g., a value of 128 requests all debug output  to  be  printed.
115              Smaller levels reduce verbosity.
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LIMITATIONS

120       The  windows TWAIN driver has many more options than this SANE backend.
121       However they are only software adjustments. This  backend  only  imple‐
122       ments what the scanner can support.
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125       SH BUGS None known.
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AUTHOR

135       The package is actively maintained by Frank Zago.
136              http://www.zago.net/sane/#leo
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140                                  11 Jul 2008                      sane-leo(5)