1sane-avision(5)          SANE Scanner Access Now Easy          sane-avision(5)
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NAME

6       sane-avision  - SANE backend for original Avision and Avision OEM scan‐
7       ners (HP, Minolta, Mitsubishi, UMAX and possibly more) flatbed and film
8       scanners.
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ABOUT THIS FILE

12       This  file  is  a short descripton for the avision-backend shipped with
13       SANE.
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DESCRIPTION

17       The sane-avision library implements a SANE (Scanner  Access  Now  Easy)
18       backend  that  provides access to various Avision scanners and the Avi‐
19       sion OEM scanners labelled by HP, Minolta, Mitsubishi or Fujitsu.
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21       It is fully big-endian aware and in every-day use on PowerPC and  SPARC
22       systems.
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24       I  suggest  you  hold one hand on the power-button of the scanner while
25       you try the first scans - especially with film-scanners!
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CONFIGURATION

29       The configuration file for this  backend  resides  in  /etc/sane.d/avi‐
30       sion.conf.
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32       Its  contents  is a list of device names that correspond to Avision and
33       Avision compatible scanners and backend-options. Empty lines and  lines
34       starting  with a hash mark (#) are ignored. A sample configuration file
35       is shown below:
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37        # this is a comment
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39        option force-a4
40        option force-a3
41        option disable-gamma-table
42        option disable-calibration
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44        #scsi Vendor Model Type Bus Channel ID LUN
45        scsi AVISION
46        scsi HP
47        scsi /dev/scanner
48        usb 0x03f0 0x0701
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51       force-a4:
52              Forces the backend to overwrite the scanable  area  returned  by
53              the  scanner  to  ISO A4. Scanner that are known to return bogus
54              data are marked in the backend so if you need this option please
55              report this to the backend maintainer. USE WITH CARE!
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57       force-a3:
58              Forces  the  backend  to overwrite the scanable area returned by
59              the scanner to ISO A3. Scanner that are known  to  return  bogus
60              data are marked in the backend so if you need this option please
61              report this to the backend maintainer. USE WITH CARE!
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63       disable-gamma-table:
64              Disables the usage of the scanner's gamma-table. You  might  try
65              this if your scans hang or only produces random garbage.
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67       disable-calibration:
68              Disables  the scanner's color calibration. You might try this if
69              your scans hang or only produces random garbage.
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71       Note:  Any option above modifies the default code-flow for  your  scan‐
72              ner. The options should only be used when you encounter problems
73              with the default be- haviour of the backend. Please  report  the
74              need  of  options  to  the  backend-author so the backend can be
75              fixed as soon as possible.
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DEVICE NAMES

79       This backend expects device names of the form:
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81              scsi scsi-spec
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83              usb usb-spec
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85       Where scsi-spec is the path-name to a special device or a device ID for
86       the  device that corresponds to a SCSI scanner. The special device name
87       must be a generic SCSI device or a symlink to such a device, for  exam‐
88       ple on Linux "/dev/sga" or "/dev/sg0". The device ID is the ID returned
89       by the scanner, for example "HP" or  "AVISION".  See  sane-scsi(5)  for
90       details.
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92       Note:  Since  the  backend  now  includes  native  USB access, it is no
93              longer needed - even considered obsolete - to access USB scanner
94              via  the  SCSI  emulation (named hpusbscsi on Linux) for Avision
95              USB devices such as the HP 53xx, HP 74xx or  Minolta  film-scan‐
96              ners.
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98       usb-spec is the USB device name, the vendor/product ID pair or the name
99       used by libusb corresponding to the USB scanner.  For  example  "0x03f0
100       0x0701" or "libusb:002:003". See sane-usb(5) for details.
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102       The program sane-find-scanner helps to find out the correct scsi or usb
103       device name.
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105       A list with supported devices is built into the avision backend so nor‐
106       mally specifying an ID should not be necessary.
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FILES

110       /etc/sane.d/avision.conf
111              The   backend   configuration  file  (see  also  description  of
112              SANE_CONFIG_DIR below).
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114       /usr/lib*/sane/libsane-avision.a
115              The static library implementing this backend.
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117       /usr/lib*/sane/libsane-avision.so
118              The shared library implementing this backend (present on systems
119              that support dynamic loading).
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ENVIRONMENT

123       SANE_CONFIG_DIR
124              This environment variable specifies the list of directories that
125              may contain the configuration file.  Under UNIX, the directories
126              are  separated  by a colon (`:'), under OS/2, they are separated
127              by a semi-colon (`;').  If this variable is not set, the config‐
128              uration  file is searched in two default directories: first, the
129              current working directory (".") and then in /etc/sane.d.  If the
130              value  of the environment variable ends with the directory sepa‐
131              rator character, then the default directories are searched after
132              the  explicitly  specified  directories.   For  example, setting
133              SANE_CONFIG_DIR to "/tmp/config:" would  result  in  directories
134              "tmp/config",  ".",  and  "/etc/sane.d"  being searched (in this
135              order).
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137       SANE_DEBUG_AVISION
138              If the library was compiled with  debug  support  enabled,  this
139              environment  variable controls the debug level for this backend.
140              Higher debug levels increase the verbosity of  the  output.  The
141              debug  level  7  is the author's prefered value to debug backend
142              problems.
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144              Example: export SANE_DEBUG_AVISION=7
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SEE ALSO

148       sane(7), sane-scsi(5), sane-usb(5)
149       http://www.exactcode.de/oss/avision/
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AUTHOR

153       René Rebe and Meino Christian Cramer
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157sane-backends 1.0.18              04 Mar 2003                  sane-avision(5)
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