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<B><A HREF="sane-sceptre.5.html">sane-sceptre(5)</A></B> SANE Scanner Access Now Easy <B><A HREF="sane-sceptre.5.html">sane-sceptre(5)</A></B>
</PRE>
<H2>NAME</H2><PRE>
sane-sceptre - SANE backend for SCEPTRE scanners
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <B>sane-sceptre</B> library implements a SANE (Scanner Access Now Easy)
backend that provides access to Sceptre flatbed scanners. This backend
should be considered <B>beta-quality</B> software! Please report any strange
behavior to the maintainer of the backend or to the SANE mailing list.
At present, only one scanner is known to work with this backend:
Model Connection Type
--------------------------- -------------------
Sceptre VividScan S1200 SCSI
The make of this scanner is KINPO, so other scanners from that manufac-
turer may also work (eg. the S600).
</PRE>
<H2>OPTIONS</H2><PRE>
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>.
Valid command line options and their syntax can be listed by using
scanimage --help -d sceptre
<B>Scan</B> <B>Mode</B>
<B>--mode</B> <B>Lineart|Halftone|Gray|Color</B>
Selects the basic mode of operation of the scanner. The <I>Lineart</I>
and <I>Halftone</I> mode are black and white only (1 bit). <I>Gray</I> will
produce 256 levels of gray (8 bits). <I>Color</I> will produce a 24
bits color image. The scanner supports 30 bits internally but it
only exports 24.
<B>--resolution</B> <B>50..1200</B>
Selects the resolution for a scan. The scanner can do several
resolutions between 50 and 1200.
<B>--halftone-pattern</B> <B>1|2|3|4</B>
Selects the pattern mode that is used in <I>Halftone</I> mode.
<B>--gamma-correction</B> <B>Default|User</B> <B>Defined|High</B> <B>Density</B> <B>Printing|Low</B> <B>den-</B>
<B>sity</B> <B>printing|High</B> <B>contrast</B> <B>printing</B>
controls the scanner internal gamma correction.
<B>--custom-gamma</B>
Allows the user to specify a gamma table (see the next 3 parame-
ters). <I>Color</I> mode only.
<B>--red-gamma-table</B>
Can be used to download a user defined gamma table for the red
channel. The table must be 256 bytes long. <I>Color</I> mode only.
<B>--green-gamma-table</B>
Can be used to download a user defined gamma table for the green
channel. The table must be 256 bytes long. <I>Color</I> mode only.
<B>--blue-gamma-table</B>
Can be used to download a user defined gamma table for the blue
channel. The table must be 256 bytes long. <I>Color</I> mode only.
<B>--threshold</B> <B>0..255</B>
Sets the threshold for black and white pixels in <I>Lineart</I> mode.
Possible values are from 0 (darker) to 255 (lighter).
<B>--preview</B>
Requests a preview scan. The resolution used for that scan is 30
dpi and the scan area is the maximum allowed. The scan mode is
user selected. The default is "no".
<B>The</B> <B>geometry</B> <B>options</B>
<B>-l</B> <B>-t</B> <B>-x</B> <B>-y</B>
control the scan area: <B>-l</B> sets the top left x coordinate, <B>-t</B> the
top left y coordinate, <B>-x</B> selects the width and <B>-y</B> the height of
the scan area. All parameters are specified in millimeters by
default.
</PRE>
<H2>CONFIGURATION FILE</H2><PRE>
The configuration file <I>/usr/local/etc/sane.d/sceptre.conf</I> supports only
one item: the device name to use (eg <I>/dev/scanner</I>).
</PRE>
<H2>FILES</H2><PRE>
<I>/usr/local/lib/sane/libsane-sceptre.a</I>
The static library implementing this backend.
<I>/usr/local/lib/sane/libsane-sceptre.so</I>
The shared library implementing this backend (present on systems
that support dynamic loading).
</PRE>
<H2>ENVIRONMENT</H2><PRE>
<B>SANE_DEBUG_SCEPTRE</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>
<B>Resolutions</B>
The windows TWAIN driver can be set to any resolution between 50
to 1200 (excluding software interpolation). This backend cannot.
Only a handful of resolution are available, although they should
be numerous enough.
</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/#sceptre</I>
11 Jul 2008 <B><A HREF="sane-sceptre.5.html">sane-sceptre(5)</A></B>
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