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






NAME

       sane-avision - SANE backend for Avision branded and Avision OEM (HP,
       Minolta, Mitsubishi, UMAX and possibly more) flatbed and film scanners.



DESCRIPTION

       The sane-avision library implements a SANE (Scanner Access Now Easy)
       backend that provides access to various Avision scanners and the Avision
       OEM scanners labelled by HP, Minolta, Mitsubishi or Fujitsu.

       It is fully big-endian aware and in everyday use on PowerPC and SPARC
       systems.

       I suggest you hold one hand on the power-button of the scanner while you
       try the first scans - especially with film-scanners!



CONFIGURATION

       The configuration file for this backend resides in
       /opt/local/etc/sane.d/avision.conf.

       Its contents is a list of device names that correspond to Avision and
       Avision compatible scanners and backend-options. Empty lines and lines
       starting with a hash mark (#) are ignored. A sample configuration file is
       shown below:

        # this is a comment
        option force-a4
        option force-a3
        option skip-adf
        option disable-gamma-table
        option disable-calibration
        #scsi Vendor Model Type Bus Channel ID LUN
        scsi AVISION
        scsi HP
        scsi /dev/scanner
        usb 0x03f0 0x0701


       force-a4:
              Forces the backend to overwrite the scanable area returned by the
              scanner to ISO A4. Scanner that are known to return bogus data are
              marked in the backend so if you need this option please report
              this to the backend maintainer. USE WITH CARE!

       force-a3:
              Forces the backend to overwrite the scanable area returned by the
              scanner to ISO A3. Scanner that are known to return bogus data are
              marked in the backend so if you need this option please report
              this to the backend maintainer. USE WITH CARE!

       skip-adf:
              Forces the backend to ignore an inconsistent ADF status returned
              by the scanner (ADF not present, but ADF model number non-zero).
              Without this option, the backend will make several attempts to
              reset the ADF and retry the query in this situation, and will fail
              with a "not supported" error if the ADF still doesn't respond.

       disable-gamma-table:
              Disables the usage of the scanner's gamma-table. You might try
              this if your scans hang or only produce random garbage.

       disable-calibration:
              Disables the scanner's color calibration. You might try this if
              your scans hang or only produce random garbage.

       Note:  Any option above modifies the default code-flow for your scanner.
              The options should only be used when you encounter problems with
              the default behavior of the backend. Please report the need of
              options to the backend-author so the backend can be fixed as soon
              as possible.



DEVICE NAMES

       This backend expects device names of the form:

              scsi scsi-spec

              usb usb-spec

       Where scsi-spec is the path-name to a special device or a device ID for
       the device that corresponds to a SCSI scanner. The special device name
       must be a generic SCSI device or a symlink to such a device, for example
       on Linux /dev/sga or /dev/sg0.  The device ID is the ID returned by the
       scanner, for example "HP" or "AVISION". See sane-scsi(5) for details.

       Note:  Since the backend now includes native USB access, it is no longer
              needed - even considered obsolete - to access USB scanner via the
              SCSI emulation (named hpusbscsi on Linux) for Avision USB devices
              such as the HP 53x, HP 74xx or Minolta film-scanners.

       usb-spec is the USB device name, the vendor/product ID pair or the name
       used by libusb corresponding to the USB scanner. For example "0x03f0
       0x0701" or "libusb:002:003". See sane-usb(5) for details.

       The program sane-find-scanner(1) helps to find out the correct scsi or
       usb device name.

       A list with supported devices is built into the avision backend so
       normally specifying an ID should not be necessary.



FILES

       /opt/local/etc/sane.d/avision.conf
              The backend configuration file (see also description of
              SANE_CONFIG_DIR below).

       /opt/local/lib/sane/libsane-avision.a
              The static library implementing this backend.

       /opt/local/lib/sane/libsane-avision.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).



ENVIRONMENT

       SANE_CONFIG_DIR
              This environment variable specifies the list of directories that
              may contain the configuration file.  On *NIX systems, the
              directories are separated by a colon (`:'), under OS/2, they are
              separated by a semi-colon (`;').  If this variable is not set, the
              configuration file is searched in two default directories: first,
              the current working directory (".") and then in
              /opt/local/etc/sane.d.  If the value of the environment variable
              ends with the directory separator character, then the default
              directories are searched after the explicitly specified
              directories.  For example, setting SANE_CONFIG_DIR to
              "/tmp/config:" would result in directories tmp/config, ., and
              /opt/local/etc/sane.d being searched (in this order).

       SANE_DEBUG_AVISION
              If the library was compiled with debug support enabled, this
              environment variable controls the debug level for this backend.
              Higher debug levels increase the verbosity of the output. The
              debug level 7 is the author's preferred value to debug backend
              problems.

              Example: export SANE_DEBUG_AVISION=7



SEE ALSO

       sane(7), sane-scsi(5), sane-usb(5)
       http://exactcode.com/site/open_source/saneavision



MAINTAINER

       Rene Rebe



AUTHOR

       Rene Rebe and Meino Christian Cramer



                                   11 Jul 2008                   sane-avision(5)

sane-backends 1.2.1 - Generated Sat Feb 25 08:53:54 CST 2023
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