sane-epson(5) SANE Scanner Access Now Easy sane-epson(5)NAMEsane-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
maintainer of the backend.
At present, the following scanners are known to work with
this backend:
Model: Connection Type
----------------------------------------------
GT-5000 parallel
GT-6000 parallel
ActionScanner II 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, IEEE-1394
Expression 636 / GT-9500 SCSI
Expression 1600 USB, SCSI, IEEE-1394
Expression 1680 USB, SCSI, IEEE-1394
CX-3200 USB
CX-5200 USB
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.
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 opera-
tion 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 scan-
ner 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
monochrome scanning and selects the color that is
not scanned. This can be used to e.g. scan an orig-
inal 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 slighly" and 2
"Sharpen".
The --gamma-correction switch controls the scan-
ner's internal gamma correction. Valid options are
"Default", "User defined", "High density printing"
"Low density printing" and "High contrast print-
ing".
The --color-correction switch controls the scan-
ner'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 resu-
lution between the lowest and highest possible
value. The list reported by the scanner can be dis-
played 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 mirored. Valid options are "yes"
and "no". The default is "no".
The --speed option can improve the scan speed in
monochrome mode. Valid options are "yes" or "no",
the "yes" option will speed up the scan if this
option is supported.
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 impoved. 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
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 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 reso-
lution. 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 aea. All parameters are speci-
fied in milimeters.
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
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 "Pos-
itive Film".
The --focus-position option selects the focus posi-
tion 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 /usr/freeware/etc/sane.d/epson.conf
specifies the device(s) that the backend will use. Possi-
ble connection types are:
SCSI This is the default, and if nothing else is speci-
fied 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).
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 subsystem and the required device files.
FILES
/usr/freeware/lib32/sane/libsane-epson.a
The static library implementing this backend.
/usr/freeware/lib32/sane/libsane-epson.so
The shared library implementing this backend (pre-
sent on systems that support dynamic loading).
ENVIRONMENT
SANE_DEBUG_EPSON
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_EPSON_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 B5. 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 ALSOsane-scsi(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).
The Perfection 600, Perfection 650, Perfection 660, Per-
fection 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
sane-backends 1.0.12 27-Dec-2000 sane-epson(5)
