Provided by: libsane-common_1.0.25+git20150528-1ubuntu2.16.04.3_all 
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 or through GUI elements in xscanimage, xsane, quiteinsane or
kooka.
If you have any success with a scanner not listed here, or if you have 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
Scan Mode
--mode selects the basic mode of operation of the scanner valid choices are Lineart , Gray
and Color 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
Lineart and Gray selects the resolution for a scan. The scanner can do all
resolutions between 1 and 600, in increments of 1.
Color selects the resolution for a scan. The scanner can do only the resolutions
listed.
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
imagemagick command: 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%
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).
--red-gamma-table
(color mode only) can be used to download a user defined gamma table for the red
channel. The table must be 256 bytes long.
--green-gamma-table
(color mode only) can be used to download a user defined gamma table for the green
channel. The table must be 256 bytes long.
--blue-gamma-table
(color mode only) can be used to download a user defined gamma table for the blue
channel. The table must be 256 bytes long.
--white-level-r
(VM3564, VM356A, VM3575 and VM6575 only) 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
(VM3564, VM356A, VM3575 and VM6575 only) Selects what green radiance level should
be considered "white", when scanning some sheets by changing the calibration i
value loaded into the scanner. Scale 0..64 in steps of 1.
--white-level-b
(VM3564, VM356A, VM3575 and VM6575 only) 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.
--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".
CONFIGURATION FILE
The configuration file /etc/sane.d/teco2.conf supports only one information: the device
name to use (eg /dev/scanner).
FILES
/usr/lib/arch_triplet/sane/libsane-teco2.a
The static library implementing this backend.
/usr/lib/arch_triplet/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-scsi(5), scanimage(1), xscanimage(1), xsane(1), sane(7)
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)