sane-umax - SANE backend for UMAX scanners
ABOUT THIS FILE
This file only is a short descripton of the umax-backend
for sane! For detailled information take a look at sane-
umax-doc.html (it is included in the sane source directory
and in the xsane online help)!
DESCRIPTION
The sane-umax library implements a SANE backend that pro
vides acces to several UMAX-SCSI-scanners and some Linotye
Hell SCSI-scanners, parallel- and USB-scanners are not
(and propably will never be) supported!
I suggest you hold one hand on the power-button of the
scanner while you try the first scans!
CONFIGURATION
The configuration file for this backend resides in
/usr/local/etc/sane.d/umax.conf.
Its contents is a list of device names that correspond to
UMAX and UMAX compatible scanners. Empty lines and lines
starting with a hash mark (#) are ignored. A sample con
figuration file is shown below:
#scsi Vendor Model Type Bus Channel ID LUN
scsi UMAX * Scanner * * * * *
/dev/scanner
# this is a comment
#
option scsi-maxqueue 4
option scsi-buffer-size-min 65536
option scsi-buffer-size-max 131072
option scan-lines 40
option preview-lines 10
option scsi-maxqueue 2
option execute-request-sense 0
option force-preview-bit-rgb 0
option slow-speed -1
option care-about-smearing -1
option calibration-full-ccd -1
option calibration-width-offset -1
option calibration-bytes-pixel -1
option invert-shading-data -1
option lamp-control-available 0
/dev/sge
- execute-request-sense:
values: 0=disabled, 1=enabled, default=0
umax_do_calibration. This can hang the system
(but has been enabled until this version)
- scsi-buffer-size-min, scsi-buffer-size-max:
values: 4096-1048576, default min=65536, max=131072
- scan-lines, preview-lines:
values: 1-65535,
default: scan-lines=40, preview-lines=10
define the maximum number of lines that are scanned
into one buffer
- force-preview-bit-rgb:
values: 0=disabled, 1=enabled, default=0
set preview bit in rgb real scan
- slow-speed, care-about-smearing:
values: -1=auto, 0=disabled, 1=enabled, default=-1
dangerous options, needed for some scanners
do not changed these options until you really know
what you do, you may destroy your scanner when you
define wrong values for this options
- calibration-full-ccd:
values: -1=auto, 0=disabled, 1=enabled, default=-1
do calibration for each pixel of ccd instead of
selected image
- calibration-width-offset:
values: -1=disabled, >=0 set value
add an offset width to the calculated with for
image/ccd
- calibration-bytes-pixel:
values: -1=disabled, 0=not set, 1=1 byte/pixel,
2=x bytes/pixel
use # bytes per pixel for calibration
- invert-shading-data:
values: -1=auto, 0=disabled, 1=enabled, default=-1
invert shading data before sending it back to the
scanner
- lamp-control-available:
values: 0=automatically set by driver - if known,
1=available, default=0
The special device name must be a generic SCSI device or a
symlink to such a device. To find out to which device
your scanner is assigned and how you have to set the per
missions of that device, have a look at sane-scsi.
The ISA-SCSI-adapters that are shipped with some Umax-
scanners are not supported very well by Linux (I suggest
not to use it), the PCI-SCSI-adapters that come with some
Umax-scanners are not supported at all (as far as I know).
On other platforms these SCSI-adapters are not supported.
So you typically need to purchase another SCSI-adapter
that is supported by your platform. See the relevant hard
ware FAQs and HOWTOs for your platform for more informa
tion.
The UMAX-scanners do block the scsi-bus for a few seconds
while scanning. It is not necessary to connect the scanner
to its own SCSI-adapter. But if you need short response
time for your SCSI-harddisk (e.g. if your computer is a
file-server) or other scsi devices, I suggest you use an
own SCSI-adapter for your UMAX-scanner.
If you have any problems with your Umax scanner, check
your scsi chain (cable length, termination, ...).
See also: sane-scsi(5)
FILES
The backend configuration file:
/usr/local/etc/sane.d/umax.conf
The static library implementing this backend:
/usr/local/lib/sane/libsane-umax.a
The shared library implementing this backend :
/usr/local/lib/sane/libsane-umax.so
(present on systems that support dynamic loading)
ENVIRONMENT
SANE_DEBUG_UMAX
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 out
put to be printed. Smaller levels reduce verbosity:
SANE_DEBUG_UMAX values
Number Remark
0 print important errors (printed each time)
1 print errors
2 print sense
3 print warnings
4 print scanner-inquiry
5 print informations
6 print less important informations
7 print called procedures
10 print called sane-init-routines
11 print called sane-procedures
12 print sane infos
13 print sane option-control messages
Example:
export SANE_DEBUG_UMAX=8
BUGS
X-resolutions greater than 600 dpi sometimes make problems
SEE ALSO
sane(7)
AUTHOR
Oliver Rauch
EMAIL-CONTACT
Oliver.Rauch@Wolfsburg.DE
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