SANE Scanner Access Now Easy sane-epson(5)
NAME
sane-epson - SANE backend for EPSON scanners
DESCRIPTION
The sane-epson library implements a SANE (Scanner Access Now
Easy) backend that provides access to Epson flatbed
scanners. Some functions of this backend should be con-
sidered beta-quality software! Most functions have been
stable for a long time, but of course new development can
not and often times will not function properly from the very
first day. Please report any strange behavior to the main-
tainer of the backend.
At present, the following scanners are known to work with
this backend:
Model: Connection Type
--------------------------- -------------------
GT-5000 SCSI, parallel
GT-6000 parallel
GT-6500 SCSI (use only the line "scsi" in epson.conf)
ActionScanner I SCSI, parallel
GT-7000 SCSI
Perfection 636 SCSI
Perfection 636U USB
Perfection 610 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, IE-1394
Expression 636 / GT-9500 SCSI
Expression 1600 USB, SCSI, IE-1394
Expression 1680 USB, SCSI, IE-1394
CX-3200 USB
CX-5200 USB
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 backend author (khk@khk.net) 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.
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Valid command line options and their syntax can be listed by
using
scanimage --help -d epson
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 inter-
nally use 36 bit color, their external interface how-
ever 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. Vald options are None, Red, Green and Blue. The
default is None. The dropout color is used for mono-
chrome 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 param-
eter 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
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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 --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 --speed option can improve the scan speed in mono-
chrome mode. Valid options are "yes" or "no", the "yes"
option will speed up the scan if this option is sup-
ported.
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 --gamma-table parameter can be used to download a
user defined gamma table. The option takes 256 values
from the range 0-255. In color mode this option equally
affects the red, green, and blue channel.
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 down-
load 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 down-
load a user defined gamma table for the blue channel.
The valid options are the same as for --gamma-table.
The color correction coefficients --cct-1 --cct-2 --
cct-3 ... --cct-9 will install color correction
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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 fron-
tend software automatically selects a low resolution.
Valid options are "yes" and "no". The default is "no".
The --preview-speed options will increase the scan
speed if this is supported by the scanner. 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 millime-
ters.
The --quick-format option lets the user select a scan
area with predefined sizes. Valid parameters are "CD",
"A5 portrait", "A5 landscape", "Letter", "A4" and
"max". The default is "max", which selects the largest
possible area.
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 scan-
ning 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.
CONFIGURATION FILE
The configuration file /etc/sane.d/epson.conf specifies the
device(s) that the backend will use. Possible connection
types are:
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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 A device file that is preceded by the string "USB" is
treated as a scanner connected via the Universal Serial
Bus. The correct special device file has to be created
prior to using it with Sane. See the USB documentation
for more information about how to set up the USB sub-
system and the required device files.
FILES
/usr/lib/sane/libsane-epson.a
The static library implementing this backend.
/usr/lib/sane/libsane-epson.so
The shared library implementing this backend (present
on systems that support dynamic loading).
ENVIRONMENT
SANEDEBUGEPSON
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.
SANEPSONCMDLVL
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!
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SEE ALSO
sane-scsi(5), scanimage(1), xscanimage(1), xsane(1)
BUGS
None :-) At least none are currently known.
UNSUPORTED 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).
The Perfection 600, Perfection 650, Perfection 660, Perfec-
tion 1250 and Perfection 1260 are not supported by this
backend.
AUTHOR
The package is actively maintained by Karl Heinz Kremer
(khk@khk.net). The software is based on work by Christian
Bucher and Kazuhiro Sasayama
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWsane-backend
Interface Stability Uncommitted
NOTES
Source for SANE is available on http:/opensolaris.org.
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