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
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
ES-300C SCSI, 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
Perfection 610 USB
Perfection 4870 USB
Perfection 4990 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 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.
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. 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.
"High density printing" "Low density printing" and "High con-
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-
The --threshold switch selects the minimum brightness to get a
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
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
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 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 back-
end software will open a given path as SCSI device. More infor-
mation about valid syntax for SCSI devices can be found in
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
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 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.
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
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 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).
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)
Man Pages Copyright Respective Owners. Site Copyright (C) 1994 - 2019
All Rights Reserved.