sane-cardscan man page on ElementaryOS

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

NAME
       sane-cardscan - SANE backend for Corex CardScan usb scanners

DESCRIPTION
       The  sane-cardscan  library implements a SANE (Scanner Access Now Easy)
       backend which provides access to the Corex CardScan 800c & 600c	small-
       format scanners.

       The backend supports only grayscale and color modes and media of (theo‐
       retically) infinite length.

       This backend may support other scanners.	 The  best  way	 to  determine
       level of support is to get a trace of the windows driver in action, and
       send it to the author.

OPTIONS
       The cardscan backend supports the following options:

       mode m
	      Selects the mode for the scan. Options are "Gray" and "Color".

CONFIGURATION FILE
       The configuration file "cardscan.conf" is used to tell the backend  how
       to  look for scanners, and provide options controlling the operation of
       the backend.  This file is read each time the frontend asks the backend
       for a list of scanners, generally only when the frontend starts. If the
       configuration file is missing, the backend will use a set  of  compiled
       defaults, which are identical to the default configuration file shipped
       with SANE.

       Scanners can be specified in the configuration file in 2 ways:

       "usb 0x04c5 0x1042" (or other vendor/product ids)
	      Requests backend to search all usb busses in the	system	for  a
	      device  which  uses  that vendor and product id. The device will
	      then be queried to determine if it is a cardscan scanner.

       "usb /dev/usb/scanner0" (or other device file)
	      Some systems use a kernel driver to access  usb  scanners.  This
	      method is untested.

       Additionally, there are two configuration options that control the pro‐
       tocol used by the backend:

       "lines_per_block 16" (or other number from 1 to 32)
	      Controls the number of lines of image data which will be aquired
	      in  each	pass.	Older  scanners	 will  require this number set
	      lower, often 1.

       "has_cal_buffer 1" (1 or 0)
	      Causes the backend to get calibration data from  scanner	during
	      initialization.  Older scanners do not support this request, and
	      must be set to 0.

ENVIRONMENT
       The backend uses a single  environment  variable,  SANE_DEBUG_CARDSCAN,
       which enables debugging output to stderr. Valid values are:

	      5	 Errors
	      10 Function trace
	      15 Function detail
	      20 Option commands
	      25 SCSI/USB trace
	      30 SCSI/USB detail
	      35 Useless noise

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

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

SEE ALSO
       sane(7), sane-usb(5)

AUTHOR
       m. allan noah: <kitno455 a t gmail d o t com>

				  10 Feb 2010		      sane-cardscan(5)
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