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

6       sane-sceptre - SANE backend for SCEPTRE scanners
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DESCRIPTION

9       The  sane-sceptre  library  implements a SANE (Scanner Access Now Easy)
10       backend that provides access to Sceptre flatbed scanners. This  backend
11       should  be  considered beta-quality software! Please report any strange
12       behavior to the maintainer of the backend or to the SANE mailing list.
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14       At present, only one scanner is known to work with this backend:
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16              Model                        Connection Type
17              ---------------------------  -------------------
18              Sceptre VividScan S1200      SCSI
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20       The make of this scanner is KINPO, so other scanners from that manufac‐
21       turer may also work (eg. the S600).
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OPTIONS

24       The options the backend supports can either be selected through command
25       line options to programs like scanimage  or  through  GUI  elements  in
26       xscanimage or xsane.
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28       Valid command line options and their syntax can be listed by using
29              scanimage --help -d sceptre
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31
32       Scan Mode
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35       --mode selects the basic mode of operation of the scanner valid choices
36              are Lineart, Halftone, Gray and Color.  The Lineart and Halftone
37              mode  are  black  and  white only (1 bit). Gray will produce 256
38              levels of gray (8 bits). Color will  produce  a  24  bits  color
39              image.  The  scanner  supports  30  bits  internally but it only
40              exports 24.
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43       --resolution
44              selects the resolution for a scan. The scanner  can  do  several
45              resolutions between 50 and 1200.
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48       --halftone-pattern
49              selects  the  pattern  mode that is used in Halftone mode. Valid
50              options are 1, 2, 3 and 4.
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53       --gamma-correction
54              controls the scanner internal gamma  correction.  Valid  options
55              are "Default", "User defined", "High density printing" "Low den‐
56              sity printing" and "High contrast printing".
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59       --custom-gamma
60              (color mode only) allows the user to specify a gamma table  (see
61              the next 3 parameters).
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64       --red-gamma-table
65              (color  mode  only) can be used to download a user defined gamma
66              table for the red channel. The table must be 256 bytes long.
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69       --green-gamma-table
70              (color mode only) can be used to download a user  defined  gamma
71              table for the green channel. The table must be 256 bytes long.
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74       --blue-gamma-table
75              (color  mode  only) can be used to download a user defined gamma
76              table for the blue channel. The table must be 256 bytes long.
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79       --threshold
80              sets the threshold for black and white pixels in  lineart  mode.
81              Possible values are from 0 (darker) to 255 (lighter).
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84       --preview
85              requests a preview scan. The resolution used for that scan is 30
86              dpi and the scan area is the maximum allowed. The scan  mode  is
87              user selected. The default is "no".
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90       The geometry options
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93       -l -t -x -y
94              control the scan area: -l sets the top left x coordinate, -t the
95              top left y coordinate, -x selects the width and -y the height of
96              the  scan  area.  All parameters are specified in millimeters by
97              default.
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CONFIGURATION FILE

102       The  configuration  file  /etc/sane.d/sceptre.conf  supports  only  one
103       information: the device name to use (eg /dev/scanner).
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FILES

108       /usr/lib*/sane/libsane-sceptre.a
109              The static library implementing this backend.
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111       /usr/lib*/sane/libsane-sceptre.so
112              The shared library implementing this backend (present on systems
113              that support dynamic loading).
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ENVIRONMENT

118       SANE_DEBUG_SCEPTRE
119              If the library was compiled with  debug  support  enabled,  this
120              environment  variable controls the debug level for this backend.
121              E.g., a value of 128 requests all debug output  to  be  printed.
122              Smaller levels reduce verbosity.
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LIMITATIONS

127       Resolutions
128              The windows TWAIN driver can be set to any resolution between 50
129              to 1200 (excluding software interpolation). This backend cannot.
130              Only a handful of resolution are available, although they should
131              be numerous enough.
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BUGS

136       None known.
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SEE ALSO

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

146       The package is actively maintained by Frank Zago.
147              http://www.zago.net/sane/#sceptre
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151sane-backends 1.0.18           April 21st, 2002                sane-sceptre(5)
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