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<!-- Manpage converted by man2html 3.0.1 -->
<B><A HREF="sane-leo.5.html">sane-leo(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-leo.5.html">sane-leo(5)</A></B>
</PRE>
<H2>NAME</H2><PRE>
sane-leo - SANE backend for LEO Technologies scanners
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <B>sane-leo</B> 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 <B>beta-quality</B> 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 <B><A HREF="scanimage.1.html">scanimage(1)</A></B> or through GUI elements in
<B><A HREF="xscanimage.1.html">xscanimage(1)</A></B> or <B><A HREF="xsane.1.html">xsane(1)</A></B>.
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
<B>Scan</B> <B>Mode</B>
<B>--mode</B> selects the basic mode of operation of the scanner. Valid
choices are <I>Black</I> <I>&amp;</I> <I>White</I>, <I>Grayscale</I> and <I>Color</I>. The <I>Black</I> <I>&amp;</I>
<I>White</I> mode is black and white only (1 bit). <I>Grayscale</I> mode will
produce 256 levels of gray (8 bits). <I>Color</I> mode will produce a
24 bit color image.
<B>--resolution</B>
selects the resolution for a scan. The scanner can do all reso-
lutions between 1 and 300, in increments of 1.
<B>Geometry</B> <B>options</B>
<B>-l</B> <B>-t</B> <B>-x</B> <B>-y</B>
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.
<B>Enhancement</B> <B>options</B>
<B>--custom-gamma</B>
(grayscale and color mode only) allows the user to specify a
gamma table (see the next 3 parameters).
<B>--red-gamma-table</B>
(color mode only) can be used to download a user defined gamma
table for the red channel. The table must be 256 bytes long.
<B>--green-gamma-table</B>
(color mode only) can be used to download a user defined gamma
table for the green channel. The table must be 256 bytes long.
<B>--blue-gamma-table</B>
(color mode only) can be used to download a user defined gamma
table for the blue channel. The table must be 256 bytes long.
<B>--halftone</B>
(Black &amp; White only) select the halftone mask to use. Possible
values are <I>Diamond</I>, <I>8x8</I> <I>Coarse</I> <I>Fatting</I>, <I>8x8</I> <I>Fine</I> <I>Fatting</I>, <I>8x8</I>
<I>Bayer</I> and <I>8x8</I> <I>Vertical</I> <I>Line</I>.
<B>--preview</B>
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".
</PRE>
<H2>CONFIGURATION FILE</H2><PRE>
The configuration file <I>/usr/local/etc/sane.d/leo.conf</I> supports only one
information: the device name to use (eg <I>/dev/scanner</I>).
</PRE>
<H2>FILES</H2><PRE>
<I>/usr/local/lib/sane/libsane-leo.a</I>
The static library implementing this backend.
<I>/usr/local/lib/sane/libsane-leo.so</I>
The shared library implementing this backend (present on systems
that support dynamic loading).
</PRE>
<H2>ENVIRONMENT</H2><PRE>
<B>SANE_DEBUG_LEO</B>
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.
</PRE>
<H2>LIMITATIONS</H2><PRE>
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.
</PRE>
<H2>BUGS</H2><PRE>
None known.
</PRE>
<H2>SEE ALSO</H2><PRE>
<B><A HREF="sane-scsi.5.html">sane-scsi(5)</A></B>, <B><A HREF="scanimage.1.html">scanimage(1)</A></B>, <B><A HREF="xscanimage.1.html">xscanimage(1)</A></B>, <B><A HREF="xsane.1.html">xsane(1)</A></B>, <B><A HREF="sane.7.html">sane(7)</A></B>
</PRE>
<H2>AUTHOR</H2><PRE>
The package is actively maintained by Frank Zago.
<I>http://www.zago.net/sane/#leo</I>
11 Jul 2008 <B><A HREF="sane-leo.5.html">sane-leo(5)</A></B>
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