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

sane-teco2 - SANE backend for TECO / RELISYS scanners

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.

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

scanimage --help -d teco2

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.

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 vertical resolution in dpi > 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%

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".

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.

(color mode only) allows the user to specify a gamma table (see the next 3 parameters).

These options are valid for scan mode Color only.

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

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

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

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

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.

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.

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.

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

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

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.
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.

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.

Plenty. Parts of this backend are still under development.

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

http://www.zago.net/sane/#teco2
http://gkall.hobby.nl/teco2.html

Thanks to:

14 Jul 2008
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