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sane-teco2(5)             SANE Scanner Access Now Easy             sane-teco2(5)




NAME

       sane-teco2 - SANE backend for TECO / RELISYS scanners


DESCRIPTION

       The sane-teco2 library implements a SANE (Scanner Access Now Easy)
       backend that provides access to some TECO SCSI flatbed scanners. This
       backend should be considered beta-quality software! TECO scanners are
       sold under various brands like Mustek, Relisys, Piotech, Primax, TRUST.
       This backend may or may not support yours.

       The scanners that should work with this backend are:

                 Vendor Model               TECO model      status
              --------------------------- --------------  -----------
                Mustek ScanMagic 4830S      VM3575         untested
                Primax Jewel 4800           VM356A         good
                Primax Profi 9600           VM6575         basic
                Primax Profi 19200          VM6586         good
                Relisys APOLLO Express 3    VM356A         basic
                Relisys APOLLO Express 6    VM6565         good
                Relisys APOLLO Express 12   ?              untested
                Relisys AVEC II S3          VM3564         good
                Relisys AVEC Super 3        VM3575         basic
                Relisys SCORPIO Pro         VM6575         good
                Relisys SCORPIO Pro-S       VM6586         untested
                Relisys SCORPIO Super 3     VM3575         good

       For all these scanners, lineart and gray mode work well. However, most of
       them do not support more than a handful of resolutions in color mode. See
       the backend home page (under AUTHOR) for the exact status of each
       scanner.

       Note that the untested scanner will not be directly supported. You should
       contact the author for that.

       The TECO VM number can usually be found at the back of the scanner. It is
       also part of the FCC ID.

       The options the backend supports can either be selected through command
       line options to programs like scanimage(1) or through GUI elements in
       xscanimage(1), xsane(1), quiteinsane(1) or kooka(1).

       If you have any success with a scanner not listed here, or if you notice
       any strange behavior, please report to the backend maintainer or to the
       SANE mailing list.



OPTIONS

       Valid command line options and their syntax can be listed by using:

              scanimage --help -d teco2


       Scan Mode


       --mode Lineart|Gray|Color
              selects the basic mode of operation of the scanner.  The Lineart
              mode is black and white only (1 bit).  Gray mode will produce 256
              levels of gray (8 bits).  Color will produce a 24 bits color
              image.


       --resolution 1..600
              Selects the resolution for a scan. The scanner can do all
              resolutions between 1 and 600, in increments of 1, for Lineart and
              Gray.  For Color, a restricted set of resolutions are available.

              Note: All values with ydpi > 300 (300 x 600) or 600 (600 x 1200)
              result in a wrong proportion for the scan. The proportion can be
              adjusted with the following convert(1) command from imagemagick:
              convert -geometry (dpi/max_xdpi * 100%)x100%
              max_xdpi is for the vm3575 constant with 300 dpi e.g. 600dpi
              adjust with: convert -geometry 200%x100%


       --preview
              requests a preview scan. The resolution used for that scan is 50
              dpi (for VM356A and VM6575 75 dpi) and the scan area is the
              maximum allowed.  The scan mode is user selected. The default is
              "no".


       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 by
              default.



       Enhancement options


       --custom-gamma (no custom gamma option for the VM3564 and VM356A)
              (color mode only) allows the user to specify a gamma table (see
              the next 3 parameters).



OPTIONS FOR COLOR MODE

       These options are valid for scan mode Color only.


       --red-gamma-table
              Can be used to download a user defined gamma table for the red
              channel. The table must be 256 bytes long.


       --green-gamma-table
              Can be used to download a user defined gamma table for the green
              channel. The table must be 256 bytes long.


       --blue-gamma-table
              Can be used to download a user defined gamma table for the blue
              channel. The table must be 256 bytes long.



OPTIONS ONLY FOR VM3564, VM356A, VM3575 and VM6575

       These options are only available for VM3564, VM356A, VM3575 and VM6575
       models.

       --white-level-r 0..64
              Selects what red radiance level should be considered "white", when
              scanning some sheets by changing the calibration value loaded into
              the scanner. Scale 0..64 in steps of 1.


       --white-level-g 0..64
              Selects what green radiance level should be considered "white",
              when scanning some sheets by changing the calibration value loaded
              into the scanner. Scale 0..64 in steps of 1.


       --white-level-b 0..64
              Selects what blue radiance level should be considered "white",
              when scanning some sheets by changing the calibration value loaded
              into the scanner. Scale 0..64 in steps of 1.




CONFIGURATION FILE

       The configuration file /opt/local/etc/sane.d/teco2.conf supports only one
       item: the device name to use (eg /dev/scanner).




FILES

       /opt/local/lib/sane/libsane-teco2.a
              The static library implementing this backend.

       /opt/local/lib/sane/libsane-teco2.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).




ENVIRONMENT

       SANE_DEBUG_TECO2
              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_TECO2_CAL_ALGO
              Either 0 or 1. Selects the algorithm for the calibration. A value
              of 1 seems to give better scans on the VM356A, VM3575.  Feedback
              on it is welcome.  For VM3564, VM356A, VM3575, VM6575 default 1.
              For other supported types default 0.




LIMITATIONS

       The windows TWAIN driver has many more options than this SANE backend.
       However they are only software adjustments. This backend only implements
       what the scanner can support.




BUGS

       Plenty. Parts of this backend are still under development.




SEE ALSO

       sane(7), sane-scsi(5), scanimage(1), xscanimage(1), xsane(1)




AUTHORS

       Frank Zago
              http://www.zago.net/sane/#teco2

       The package is actively maintained by Gerard Klaver.
              http://gkall.hobby.nl/teco2.html






CREDITS

       Thanks to:

       Gerard Klaver for his relentless VM3575 testings and contributed a patch
       to support the VM3564 and VM356A.

       Mark Plowman for providing the first SCSI traces from a VM3575.

       Andreas Klaedtke for providing the first SCSI traces from a VM6586 and
       for his testing, and to Stefan von Dombrowski for his testing.

       Nicolas Peyresaubes for providing the first SCSI traces from a VM656A and
       for his testing.

       Dave Parker for testing the support for the VM6575.

       Michael Hoeller for testing the support for the VM356A.

       Christoph Hoeffner for testing the support for the VM3564 (Relisys AVEC
       II S3 firmware 1.09).



                                   14 Jul 2008                     sane-teco2(5)

sane-backends 1.2.1 - Generated Sat Feb 25 16:14:44 CST 2023
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