kopia lustrzana https://gitlab.com/sane-project/backends
296 wiersze
10 KiB
Groff
296 wiersze
10 KiB
Groff
.TH sane-epson 5 "27-Dec-2000"
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.IX sane-epson
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.SH NAME
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sane-epson - SANE backend for EPSON scanners
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.SH DESCRIPTION
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The
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.B sane-epson
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library implements a SANE (Scanner Access Now Easy) backend that
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provides access to Epson flatbed scanners. Some functions of this
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backend should be considered
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.B beta-quality
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software! Most functions have been stable for a long time, but of
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course new development can not and will not function properly from
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the very first day. Please report any strange behavior to the
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maintainer of the backend.
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.PP
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At present, the following scanners are known to work with this backend:
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.PP
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.RS
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Model: Connection Type
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.br
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--------------------------- -------------------
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.br
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GT-5000 parallel
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.br
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GT-6000 parallel
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.br
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ActionScanner II parallel
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.br
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GT-7000 SCSI
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.br
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Perfection 636 SCSI
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.br
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Perfection 636U USB
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.br
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Perfection 610 USB
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.br
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Perfection 640 USB
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.br
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Perfection 1200S SCSI
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.br
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Perfection 1200U USB
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.br
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Perfection 1240 USB, SCSI
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.br
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Perfection 1640 USB, SCSI
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.br
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Expression 636 / GT-9500 SCSI
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.br
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Expression 1600 USB, SCSI, IEEE-1394
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.RE
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For other scanners the software may or may not work. Please send mail to
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the backend author (khk@khk.net) to report successes or failures.
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.SH OPTIONS
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The options the backend supports can either be selected through command line
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options to programs like scanimage or through GUI elements in xscanimage or xsane.
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Valid command line options and their syntax can be listed by using
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.RS
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scanimage --help -d epson
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.RE
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Not all devices support all options.
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.TP
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.I Scan Mode
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The
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.I --mode
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switch selects the basic mode of operation of the scanner valid choices are
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.I Binary, Gray and Color.
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The Binary mode is black and white only, Gray will produce 256 levels of gray
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or more depending on the scanner and Color means 24 bit color mode or more
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depending on the scanner. Some scanners will internally use 36 bit color,
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the external interface however does only support 24 bits.
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The
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.I --depth
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option selects the bit depth the scanner is using. This option is only available
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for scanners that support more than one bit depth. Older scanners will always
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transfer the image in 8bit mode. Newer scanners allow to select either 8 bits
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or 12 or 14 bits per color channel. For a color scan this means an effective
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color depth of 36 or 42 bits over all channels. The valid choice depend on
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the scanner model.
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The
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.I --dropout
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option determines which color filters are used to scan in Binary mode. Valid choices
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are None, Red, Green and Blue.
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The
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.I --halftoning
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switch selects the mode that is used in Binary mode. Valid options are None,
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Halftone A (Hard Tone), Halftone B (Soft Tone), Halftone C (Net Screen),
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Dither A (4x4 Bayer), Dither B (4x4 Spiral), Dither C (4x4 Net Screen),
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Dither D (8x4 Net Screen), Text Enhanced Technology, Download pattern A,
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and Download pattern B.
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The
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.I --dropout
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switch selects the so called dropout color. Vald options are None, Red, Green
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and Blue. The default is None. The dropout color is used for
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monochrome scanning and selects the color that is not scanned. This can be used
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to e.g. scan an original with a colored background.
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The
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.I --brightness
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switch controls the brightness of the scan. Valid options are the numbers from -3 to
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3. The default is 0. The larger the brightness value, the brighter the image gets. If
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a user defined table for the gamma correction is selected, the brightness parameter is
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not available.
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The
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.I --sharpness
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switch sets the sharpness of the image data. Valid options are the numbers from -2 to
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2, with -2 meaning "Defocus", -1 "Defocus slightly", 0 "Normal", 1 "Sharpen slighly"
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and 2 "Sharpen".
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The
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.I --gamma-correction
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switch controls the scanne internal gamma correction. Valid options are "Default", "User
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defined", "High density printing" "Low density printing" and "High contrast printing".
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The
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.I --color-correction
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switch controls the scanner internal color correction function. Valid options are "No
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Correction", "Impact-dot printers", "Thermal printers", "Ink-jet printers" and "CRT
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monitors". The default is "CRT monitors".
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The
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.I --resolution
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switch selects the resolution for a scan. Many EPSON scanners will scan in any resulution between
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the lowest and highest possible value. The list reported by the scanner can be displayed using
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the "--help -d epson" parameters to scanimage.
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The
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.I --mirror
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option controls the way the image is scanned. By reading the image data from right to left the
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image is mirored. Valid options are "yes" and "no". The default is "no".
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The
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.I --speed
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option can improve the scan speed in monochrome mode. Valid options are "yes" or "no", the "yes"
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option will speed up the scan if this option is supported.
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The
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.I --auto-area-segmentation
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switch turns on the automatic area segmentation for monochrome scans. The scanner will try to
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determine which areas are text and which contain images. The image areas will be halftoned,
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and the text will be impoved. Valid options are "yes" and "no". The default is "yes".
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The
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.I --gamma-table
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parameter can be used to download a user defined gamma table. The options takes 256 values from
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the range 0-255. In color mode this option equally affects the red, green, and blue channel.
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The
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.I --red-gamma-table
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parameter can be used to download a user defined gamma table for the red channel. The valid
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options are the same as for --gamma-table.
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The
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.I --green-gamma-table
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parameter can be used to download a user defined gamma table for the green channel. The valid
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options are the same as for --gamma-table.
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The
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.I --blue-gamma-table
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parameter can be used to download a user defined gamma table for the blue channel. The valid
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options are the same as for --gamma-table.
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The color correction coefficients
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.I --cct-1 --cct-2 --cct-3 ... --cct-9
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will install color correction coefficients for the user defined color correction. Possible
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values are in the range -127..127.
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The
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.I --preview
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option requests a preview scan. The frontend software automatically selects a low
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resolution. Valid options are "yes" and "no". The default is "no".
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The
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.I --preview-speed
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options will increase the scan speed if this is supported by the scanner. Valid options
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are "yes" and "no", the default is "no".
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The geometry options
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.I -l -t -x -y
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control the scan area: -l sets the top left x coordinate, -t the top left y coordinate,
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-x selects the width and -y the height of the scan aea. All parameters are specified in
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milimeters.
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The
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.I --quick-format
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option lets the user select a scan area with predefined sizes. Valid parameters are "CD",
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"A5 portrait", "A5 landscape", "Letter", "A4" and "max". The default is "max", which
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selects the largest possible area.
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The
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.I --source
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option selects the scan source. Valid options depend on the installed options. The default
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is "Flatbed".
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The
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.I --auto-eject
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option will eject a page after scanning from the document feeder.
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The
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.I --film-type
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option will select the film type for scans with the transparency unit. This
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option is only activated of the TPU is selected as scan source. Valid options
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are "Negative Film" and "Positive Film".
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The
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.I --focus-position
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option selects the focus position for all scans. Valid options are "Focus 2.5mm above
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glass" and "Focus on glass". The focus on the 2.5mm point above the glass is
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necessary for scans with the transparency unit, so that the scanner can focus on the
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film if one of the film holders is used.
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.SH CONFIGURATION FILE
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The configuration file @CONFIGDIR@/epson.conf specifies the device(s) that the
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backend will use. The current version only supports one scanner per Epson
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backend. Possible connection types are:
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.TP
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.I SCSI
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This is the default, and if nothing else is specified the backend software will
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open a given patch as SCSI device. More information about valid syntax for SCSI
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devices can be found in sane-scsi(5).
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.TP
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.I PIP - Parallel Interface
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The parallel interface can be configured in two ways: An integer number starting
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at the beginning of a line will be interpreted as the IO address of the parallel
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port. To make it clearer that a configured IO address is a parallel port the
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port address can be preceded by the string "PIO". The PIO connection does not
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use a special device file in the /dev directory.
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.TP
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.I USB
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A device file that is preceded by the string "USB" is treated as a scanner
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connected via the Universal Serial Bus. The correct special device file has
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to be created prior to using it with Sane. See the USB documentation for
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more information about how to set up the USB subsystem and the required
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device files.
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.SH FILES
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.TP
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.I @LIBDIR@/libsane-epson.a
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The static library implementing this backend.
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.TP
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.I @LIBDIR@/libsane-epson.so
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The shared library implementing this backend (present on systems that
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support dynamic loading).
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.SH ENVIRONMENT
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.TP
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.B SANE_DEBUG_EPSON
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If the library was compiled with debug support enabled, this
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environment variable controls the debug level for this backend. E.g.,
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a value of 128 requests all debug output to be printed. Smaller
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levels reduce verbosity.
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.TP
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.B SANE_EPSON_CMD_LVL
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This allows to override the function or command level that the backend
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uses to communicate with the scanner. The function level a scanner
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supports is determined during the initialization of the device. If
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the backend does not recognize the function level reported by the
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scanner it will default to function level B5. Valid function levels
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are A1, A2, B1, B2, B3, B4, B5, B6, B7, B8 and F5. Use this feature
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only if you know what you are doing!
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.SH "SEE ALSO"
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sane\-scsi(5), scanimage(1), xscanimage(1), xsane(1)
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.SH BUGS
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None :-) At least none are currently known.
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.SH UNSUPPORTED DEVICES
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The backend may be used with Epson scanners that are not yet listed
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under the list of supported devices. A scanner that is not recognized
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may default to the function level B3, which means that not all
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functions that the scanner may be capable of are accessible.
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If the scanner is not even recognized as an Epson scanner this is
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probably because the device name reported by the scanner is not in the
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correct format. Please send this information to the backend maintainer
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(email address is in the AUTHOR section of this man page or in the
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AUTHORS file of the SANE distribution).
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.SH AUTHOR
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The package is actively maintained by Karl Heinz Kremer (khk@khk.net). The
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software is based on work by Christian Bucher and Kazuhiro Sasayama
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