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
programs 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
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
scanimage.
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).
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
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
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
output to be printed. Smaller levels reduce verbosity.
SANE_EPSON2_CMD_LVL
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!
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 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).
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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