Provided by: libsane-common_1.1.1-5ubuntu1_all bug


       sane-epson2 - SANE backend for EPSON scanners


       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.


       The  options  the  backend supports can either be selected through command line options to
       programs like scanimage(1) or through GUI  elements  in  programs  like  xscanimage(1)  or

       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 one 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 Technology", "Download
              pattern A", and "Download pattern B".

              The --dropout switch selects the so called dropout color. Valid 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 contrast 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

              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  software  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 parameters 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 necessary 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 scanners 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 select the ADF mode (simplex/duplex).


       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 backend software will
              open a given path as SCSI device. More information  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  scanners  can  be  auto-discovered if autodiscovery is specified after net
              keyword.  An IP address to connect to can also be used.


              The static library implementing this backend.

              The shared library implementing this  backend  (present  on  systems  that  support
              dynamic loading).


              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.

              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

              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 output to be printed.  Smaller levels reduce verbosity.

              This  allows one 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!


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


       None :-) At least none are currently known.


       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 functions that the scanner may be capable of are accessible.

       If the scanner is not even recognized as an Epson scanner this  is  probably  because  the
       device  name  reported  by  the  scanner  is  not  in the correct 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).


       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)