SANE Scanner Access Now Easy sane-umax(5)
NAME
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
CONFIGURATION
The configuration file for this backend resides in
/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 confi-
guration file is shown below:
# 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 exposure-time-rgb-bind -1
option invert-shading-data -1
option lamp-control-available 0
option gamma-lsb-padded 0
/dev/sge
#scsi Vendor Model Type Bus Channel ID LUN
# The following scanner supports lamp control
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option lamp-control-available 1
scsi UMAX * Scanner * * * * *
# scanner on /dev/scanner does not support lamp control
option lamp-control-available 0
/dev/scanner
execute-request-sense:
values: 0 = disabled, 1 = enabled
default = 0
If set to 1 umaxdorequestsense is called in
umaxdocalibration. 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 = 32768, max = 131072
Especially the minimum value is very important. If
this value is set too small the backend is not able to
send gamma tables to the scanner or to do a correct
color calibration. This may result in strange color
effects. If the minimum value is set too large then the
backend is not able to allocate the requested scsi
buffer size and aborts with out of memory error. The
default is 32KB, for some scanners it should be
increased to 64KB.
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
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calibration-width-offset:
values: -99999 = auto, > -99999 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 = 2 bytes/pixel
use # bytes per pixel for calibration
exposure-time-rgb-bind:
values: -1 = automatically set by driver - if known, 0
= disabled (own selection for red, green and blue), 1 =
enabled (same values for red, green and blue)
invert-shading-data:
values: -1 = automatically set by driver - if known, 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
gamma-lsb-padded:
values: -1 = automatically set by driver - if known, 0
= gamma data is msb padded, 1 = gamma data is lsb pad-
ded
default = -1
handle-bad-sense-error:
values: 0 = handle as device busy, 1 = handle as ok, 2
= handle as i/o error, 3 = ignore bad error code - con-
tinue sense handler
default = 0
scsi-maxqueue:
values: 1..# (maximum defined at compile time)
default = 2
most scsi drivers allow internal command queueing with
a depth of 2 commands. In most cases it does not mprove
anything when you increase this value. When your scsi
driver does not support any command queueing you can
try to set this value to 1.
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 permissions
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of that device, have a look at sane-scsi.
SCSI ADAPTER TIPS
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 hardware FAQs
and HOWTOs for your platform for more information.
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:
/etc/sane.d/umax.conf
The static library implementing this backend:
/usr/lib/sane/libsane-umax.a
The shared library implementing this backend:
/usr/lib/sane/libsane-umax.so (present on systems that
support dynamic loading)
ENVIRONMENT
SANEDEBUGUMAX
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:
SANEDEBUGUMAX values
Number Remark
0 print important errors (printed each time)
1 print errors
2 print sense
3 print warnings
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4 print scanner-inquiry
5 print informations
6 print less important informations
7 print called procedures
8 print readerprocess messages
10 print called sane-init-routines
11 print called sane-procedures
12 print sane infos
13 print sane option-control messages
Example:
export SANEDEBUGUMAX=8
BUGS
X-resolutions greater than 600 dpi sometimes make problems
SEE ALSO
sane(7)
AUTHOR
Oliver Rauch
EMAIL-CONTACT
Oliver.Rauch@Rauch-Domain.DE
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWsane-backend
Interface Stability Uncommitted
NOTES
Source for SANE is available on http:/opensolaris.org.
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