sane-epson2 man page on Knoppix

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sane-epson2(5)		 SANE Scanner Access Now Easy		sane-epson2(5)

NAME
       sane-epson2 - SANE backend for EPSON scanners

DESCRIPTION
       The  sane-epson2	 library  implements  a SANE (Scanner Access Now Easy)
       backend that provides access to Epson flatbed scanners.	 This  library
       supports	 a  similar  set  of scanners as the sane-epson driver but was
       developed to support a wider  range  of	connections  to	 the  scanner;
       include network access.

       Because	sane-epson  and	 sane-epson2  drivers support many of the same
       devices, if one driver gives you problems you may try disabling	it  to
       try  the	 other.	 This can be done by removing the driver name from the
       dll.conf or perhaps by commenting out  the  options  in	epson.conf  or
       epson2.conf.

       At present, the following scanners are known to work with this backend:

	      Model:			   Connection Type
	      ---------------------------  -------------------
	      ActionScanner II		   SCSI, parallel
	      AcuLaser CX11 Series	   USB, Network
	      AcuLaser CX21 Series	   USB, Network
	      CX-3200			   USB
	      CX-3600			   USB
	      CX-3650			   USB
	      CX-4050			   USB
	      CX-4600			   USB
	      CX-4800			   USB
	      CX-5000			   USB
	      CX-5200			   USB
	      CX-5400			   USB
	      CX-6300			   USB
	      CX-6400			   USB
	      CX-6500			   USB
	      CX-6600			   USB
	      DX-3800			   USB
	      DX-5000			   USB
	      DX-5050			   USB
	      DX-6000			   USB
	      DX-7400			   USB
	      ES-300C			   SCSI, parallel
	      ES-300GS			   SCSI
	      ES-600C			   parallel
	      ES-1200C			   parallel
	      Expression 636		   SCSI
	      Expression 800		   SCSI
	      Expression 1600		   USB, SCSI, IEEE-1394
	      Expression 1680		   USB, SCSI, IEEE-1394
	      FilmScan 200		   SCSI
	      GT-5000			   SCSI, parallel
	      GT-5500			   SCSI
	      GT-6000			   parallel
	      GT-6500			   parallel
	      GT-7000			   SCSI
	      GT-8000			   SCSI
	      GT-8500			   SCSI
	      Perfection 610		   USB
	      Perfection 636S		   SCSI
	      Perfection 636U		   USB
	      Perfection 640		   USB
	      Perfection 1200S		   SCSI
	      Perfection 1200U		   USB
	      Perfection 1240		   USB, SCSI
	      Perfection 1640		   USB, SCSI
	      Perfection 1650		   USB
	      Perfection 1660		   USB
	      Perfection 2400		   USB
	      Perfection 2450		   USB, IEEE-1394
	      Perfection 3200		   USB
	      Perfection 4870		   USB
	      Perfection 4990		   USB
	      RX-425			   USB
	      RX-500			   USB
	      RX-600			   USB
	      RX-700			   USB
	      V700			   USB, IEEE-1394
	      V750			   USB, IEEE-1394
	      and many more. The official list is on the Sane web site.

       For other scanners the software	may or may not work.  Please send mail
       to the sane-backend mailing list to report success with scanners not on
       the list or problems with scanners that are listed.

OPTIONS
       The options the backend supports can either be selected through command
       line options to programs like scanimage or through GUI elements in pro‐
       grams like xscanimage or xsane.

       Valid command line options and their syntax can be listed by using
	      scanimage --help -d epson2
       Not all devices support all options.

       Scan Mode
	      The  --mode  switch  selects  the basic mode of operation of the
	      scanner. Valid choices are Binary, Gray and Color.   The	Binary
	      mode  is	black  and white only, Gray will produce 256 levels of
	      gray or more depending on the scanner and	 Color	means  24  bit
	      color mode or more depending on the scanner.  Some scanners will
	      internally use 36 bit color, their  external  interface  however
	      may only support 24 bits.

	      The  --depth  option selects the bit depth the scanner is using.
	      This option is only available for	 scanners  that	 support  more
	      than  one	 bit  depth.  Older  scanners will always transfer the
	      image in 8bit mode. Newer scanners  allow	 to  select  either  8
	      bits,  12	 or  14	 bits per color channel. For a color scan this
	      means an effective color depth of 36 or 42 bits over  all	 three
	      channels. The valid choices depend on the scanner model.

	      The  --halftoning switch selects the mode that is used in Binary
	      mode. Valid  options  are	 "None",  "Halftone  A	(Hard  Tone)",
	      "Halftone	 B  (Soft Tone)", "Halftone C (Net Screen)", "Dither A
	      (4x4 Bayer)", "Dither  B	(4x4  Spiral)",	 "Dither  C  (4x4  Net
	      Screen)",	 "Dither  D (8x4 Net Screen)", "Text Enhanced Technol‐
	      ogy", "Download pattern A", and "Download pattern B".

	      The --dropout switch selects the so called dropout  color.  Vald
	      options  are None, Red, Green and Blue. The default is None. The
	      dropout color is used for monochrome scanning  and  selects  the
	      color  that  is  not  scanned.  This can be used to e.g. scan an
	      original with a colored background.

	      The --brightness switch controls the  brightness	of  the	 scan.
	      Valid options are integer values from -3 to 3. The default is 0.
	      The larger the brightness value, the brighter the image gets. If
	      a	 user  defined table for the gamma correction is selected, the
	      brightness parameter is not available.

	      The --sharpness switch sets the sharpness	 of  the  image	 data.
	      Valid  options  are integer values from -2 to 2, with -2 meaning
	      "Defocus",  -1  "Defocus	slightly",  0  "Normal",  1   "Sharpen
	      slightly" and 2 "Sharpen".

	      The  --gamma-correction  switch  controls the scanner's internal
	      gamma correction. Valid options are "Default",  "User  defined",
	      "High  density  printing"	 "Low density printing" and "High con‐
	      trast printing".

	      The --color-correction switch controls  the  scanner's  internal
	      color  correction	 function.  Valid options are "No Correction",
	      "Impact-dot printers", "Thermal  printers",  "Ink-jet  printers"
	      and "CRT monitors". The default is "CRT monitors".

	      The  --resolution switch selects the resolution for a scan. Some
	      EPSON scanners will scan in any resolution  between  the	lowest
	      and highest possible value. The list reported by the scanner can
	      be displayed using the "--help -d epson" parameters  to  scanim‐
	      age.

	      The  --threshold	switch selects the minimum brightness to get a
	      white point.

	      The --mirror option controls the way the image  is  scanned.  By
	      reading the image data from right to left the image is mirrored.
	      Valid options are "yes" and "no". The default is "no".

	      The --auto-area-segmentation switch activates the automatic area
	      segmentation  for	 monochrome  scans.  The  scanner  will try to
	      determine which areas are text and  which	 contain  images.  The
	      image  areas  will  be halftoned, and the text will be improved.
	      Valid options are "yes" and "no". The default is "yes".

	      The --red-gamma-table parameter can be used to download  a  user
	      defined  gamma  table for the red channel. The valid options are
	      the same as for --gamma-table.

	      The --green-gamma-table parameter can be used to download a user
	      defined gamma table for the green channel. The valid options are
	      the same as for --gamma-table.

	      The --blue-gamma-table parameter can be used to download a  user
	      defined  gamma table for the blue channel. The valid options are
	      the same as for --gamma-table.

	      The --wait-for-button parameter can be used to  wait  until  the
	      button  on  the  scanner	is  pressed to actually start the scan
	      process.

	      The color correction coefficients --cct-1	 --cct-2  --cct-3  ...
	      --cct-9  will install color correction coefficients for the user
	      defined color correction. Values are specified  as  integers  in
	      the range -127..127.

	      The --preview option requests a preview scan. The frontend soft‐
	      ware automatically selects a low resolution. Valid  options  are
	      "yes" and "no". The default is "no".

	      The  geometry options -l -t -x -y 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 param‐
	      eters are specified in millimeters.

	      The --source option  selects  the	 scan  source.	Valid  options
	      depend on the installed options. The default is "Flatbed".

	      The  --auto-eject	 option	 will eject a page after scanning from
	      the document feeder.

	      The --film-type option will select the film type for scans  with
	      the  transparency unit. This option is only activated if the TPU
	      is selected as scan source. Valid options	 are  "Negative	 Film"
	      and "Positive Film".

	      The  --focus-position  option selects the focus position for all
	      scans. Valid options are "Focus 2.5mm above glass" and "Focus on
	      glass".  The  focus on the 2.5mm point above the glass is neces‐
	      sary for scans with the transparency unit, so that  the  scanner
	      can  focus on the film if one of the film holders is used.  This
	      option is only functional for selected scanners, all other scan‐
	      ners will ignore this option.

	      The --bay option selects which bay to scan

	      The --eject option ejects the sheet in the ADF.

	      The --adf-mode option selecst the ADF mode (simplex/duplex).

CONFIGURATION FILE
       The  configuration file /etc/sane.d/epson2.conf specifies the device(s)
       that the backend will use. Possible connection types are:

       SCSI   This is the default, and if nothing else is specified the	 back‐
	      end  software will open a given path as SCSI device. More infor‐
	      mation about valid syntax for  SCSI  devices  can	 be  found  in
	      sane-scsi(5).
	      Usually SCSI scanners are configured with a line "scsi EPSON" in
	      this file. In some cases it may be necessary  to	only  use  the
	      string "scsi" (e.g. for the GT-6500).

       PIO - Parallel Interface
	      The parallel interface can be configured in two ways: An integer
	      value starting at the beginning of a line will be interpreted as
	      the  IO  address of the parallel port. To make it clearer that a
	      configured IO address is a parallel port the port address can be
	      preceded	by the string "PIO". The PIO connection does not use a
	      special device file in the /dev directory. The IO address can be
	      specified in hex mode (prefixed with "0x").

       USB    For  USB	scanners  not  automatically  detect, their VENDOR and
	      PRODUCT ID can be specified manually in the config  file.	  More
	      information  about  valid syntax for USB devices can be found in
	      sane-usb(5).

       Network
	      Network scanners can  be	auto-discovered	 if  autodiscovery  is
	      specified	 after	net  keyword.  An IP address to connect to can
	      also be used.

FILES
       /usr/lib/arch_triplet/sane/libsane-epson2.a
	      The static library implementing this backend.

       /usr/lib/arch_triplet/sane/libsane-epson2.so
	      The shared library implementing this backend (present on systems
	      that support dynamic loading).

ENVIRONMENT
       SANE_DEBUG_EPSON2
	      If  the  library	was  compiled with debug support enabled, this
	      environment 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.

       SANE_DEBUG_EPSON2_SCSI
	      If the library was compiled with	debug  support	enabled,  this
	      environment  variable  controls the SCSI related debug level for
	      this backend.  Only a value of 2 is supported.

       SANE_DEBUG_EPSON2_NET
	      If the library was compiled with	debug  support	enabled,  this
	      environment  variable  controls  the network related debug level
	      for this backend.	 E.g., a value of 128 requests all debug  out‐
	      put to be printed.  Smaller levels reduce verbosity.

       SANE_EPSON2_CMD_LVL
	      This  allows  to override the function or command level that the
	      backend uses to communicate with the scanner. The function level
	      a	 scanner  supports  is determined during the initialization of
	      the device. If the backend does not recognize the function level
	      reported	by  the	 scanner it will default to function level B3.
	      Valid function levels are A1, A2, B1, B2, B3, B4,	 B5,  B6,  B7,
	      B8,  D1  and  F5. Use this feature only if you know what you are
	      doing!

SEE ALSO
       sane-scsi(5), sane-usb(5), scanimage(1), xscanimage(1), xsane(1)

BUGS
       None :-) At least none are currently known.

UNSUPPORTED DEVICES
       The backend may be used with Epson scanners that	 are  not  yet	listed
       under  the  list of supported devices. A scanner that is not recognized
       may default to the function level B3, which means that  not  all	 func‐
       tions that the scanner may be capable of are accessible.

       If the scanner is not even recognized as an Epson scanner this is prob‐
       ably because the device name reported by the scanner is not in the cor‐
       rect  format.  Please  send  this information to the backend maintainer
       (email address is in the AUTHOR section of this	man  page  or  in  the
       AUTHORS file of the SANE distribution).

AUTHOR
       The  package  is	 written  by Alessandro Zummo and is based on previous
       work done by Karl Hienz Kremer in the epson package as well as based on
       work by Christian Bucher and Kazuhiro Sasayama

				  22 Jan 2009			sane-epson2(5)
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