sane-cardscan(5)

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

6       sane-cardscan - SANE backend for Corex CardScan usb scanners
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DESCRIPTION

10       The  sane-cardscan  library implements a SANE (Scanner Access Now Easy)
11       backend which provides access to the Corex CardScan 800c & 600c  small-
12       format scanners.
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14       The backend supports only grayscale and color modes and media of (theo‐
15       retically) infinite length.
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17       This backend may support other scanners.  The  best  way  to  determine
18       level of support is to get a trace of the windows driver in action, and
19       send it to the author.
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OPTIONS

23       The cardscan backend supports the following options:
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25       mode m
26              Selects the mode for the scan. Options are "Gray" and "Color".
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CONFIGURATION FILE

29       The configuration file "cardscan.conf" is used to tell the backend  how
30       to  look for scanners, and provide options controlling the operation of
31       the backend.  This file is read each time the frontend asks the backend
32       for a list of scanners, generally only when the frontend starts. If the
33       configuration file is missing, the backend will use a set  of  compiled
34       defaults, which are identical to the default configuration file shipped
35       with SANE.
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37       Scanners can be specified in the configuration file in 2 ways:
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39       "usb 0x04c5 0x1042" (or other vendor/product ids)
40              Requests backend to search all usb busses in the  system  for  a
41              device  which  uses  that vendor and product id. The device will
42              then be queried to determine if it is a cardscan scanner.
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44       "usb /dev/usb/scanner0" (or other device file)
45              Some systems use a kernel driver to access  usb  scanners.  This
46              method is untested.
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48       Additionally, there are two configuration options that control the pro‐
49       tocol used by the backend:
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52       "lines_per_block 16" (or other number from 1 to 32)
53              Controls the number  of  lines  of  image  data  which  will  be
54              acquired  in each pass.  Older scanners will require this number
55              set lower, often 1.
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57       "has_cal_buffer 1" (1 or 0)
58              Causes the backend to get calibration data from  scanner  during
59              initialization.  Older scanners do not support this request, and
60              must be set to 0.
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ENVIRONMENT

64       The backend uses a single  environment  variable,  SANE_DEBUG_CARDSCAN,
65       which enables debugging output to stderr. Valid values are:
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67              5  Errors
68              10 Function trace
69              15 Function detail
70              20 Option commands
71              25 SCSI/USB trace
72              30 SCSI/USB detail
73              35 Useless noise
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KNOWN ISSUES

77              The  scanner does not seem to have much control possible, so the
78              backend cannot set  x/y  coordinate  values,  resolutions,  etc.
79              These  things  could  be simulated in the backend, but there are
80              plenty of command line tools.
81              The backend also does not send all the commands that the windows
82              driver does, so it may not function the same.
83              The backend does not have the calibration or ejection options of
84              the windows driver.
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CREDITS

88       The hardware to build this driver was provided to the author by:
89         Jeff Kowalczyk <jtk a t yahoo d o t com>
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AUTHOR

97       m. allan noah: <kitno455 a t gmail d o t com>
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102                                  10 Feb 2010                 sane-cardscan(5)