[sane-devel] Canon DR-3060

[lelive]

I all,
i have a problem with a CANON DR-3060 SCSI scanner.
scanimage -L is ok but when i want start the scan with command line 
root at debian:~/dev/sane-backends-git20130912# scanimage
--batch="tmp/test%d.pnm" --batch-start=1 --source "ADF Front"
Scanning -1 pages, incrementing by 1, numbering from 1
Scanning page 1
scanimage: sane_start: Invalid argument

root at debian:~/dev/sane-backends-git20130912# scanimage -L
device `canon_dr:/dev/sg2' is a CANON DR-3060 scanner

scanimage -h :
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root at debian:~/dev/sane-backends-git20130912# scanimage -h
Usage: scanimage [OPTION]...

Start image acquisition on a scanner device and write image data to
standard output.

Parameters are separated by a blank from single-character options (e.g.
-d epson) and by a "=" from multi-character options (e.g.
--device-name=epson).
-d, --device-name=DEVICE   use a given scanner device (e.g. hp:/dev/scanner)
    --format=pnm|tiff      file format of output file
-i, --icc-profile=PROFILE  include this ICC profile into TIFF file
-L, --list-devices         show available scanner devices
-f, --formatted-device-list=FORMAT similar to -L, but the FORMAT of the
output
                           can be specified: %d (device name), %v (vendor),
                           %m (model), %t (type), %i (index number), and
                           %n (newline)
-b, --batch[=FORMAT]       working in batch mode, FORMAT is `out%d.pnm' or
                           `out%d.tif' by default depending on --format
    --batch-start=#        page number to start naming files with
    --batch-count=#        how many pages to scan in batch mode
    --batch-increment=#    increase page number in filename by #
    --batch-double         increment page number by two, same as
                           --batch-increment=2
    --batch-prompt         ask for pressing a key before scanning a page
    --accept-md5-only      only accept authorization requests using md5
-p, --progress             print progress messages
-n, --dont-scan            only set options, don't actually scan
-T, --test                 test backend thoroughly
-A, --all-options          list all available backend options
-h, --help                 display this help message and exit
-v, --verbose              give even more status messages
-B, --buffer-size=#        change input buffer size (in kB, default 32)
-V, --version              print version information

Options specific to device `canon_dr:/dev/sg2':
  Standard:
    --source ADF Front|ADF Duplex [ADF Front]
        Selects the scan source (such as a document-feeder).
    --mode Lineart|Gray [Gray]
        Selects the scan mode (e.g., lineart, monochrome, or color).
    --resolution 200|240|300dpi [300]
        Sets the resolution of the scanned image.
  Geometry:
    -l 0..215.872mm (in steps of 0.0211639) [0]
        Top-left x position of scan area.
    -t 0..279.364mm (in steps of 0.0211639) [0]
        Top-left y position of scan area.
    -x 0..215.872mm (in steps of 0.0211639) [215.872]
        Width of scan-area.
    -y 0..279.364mm (in steps of 0.0211639) [279.364]
        Height of scan-area.
    --page-width 0..255.999mm (in steps of 0.0211639) [215.872]
        Specifies the width of the media.  Required for automatic centering
of
        sheet-fed scans.
    --page-height 0..364.02mm (in steps of 0.0211639) [279.364]
        Specifies the height of the media.
  Enhancement:
    --brightness -127..127 (in steps of 1) [0]
        Controls the brightness of the acquired image.
    --contrast -127..127 (in steps of 1) [0]
        Controls the contrast of the acquired image.
    --threshold 0..255 (in steps of 1) [inactive]
        Select minimum-brightness to get a white point
  Advanced:
    --df-thickness[=(yes|no)] [no]
        Detect double feeds using thickness sensor
    --df-length[=(yes|no)] [no]
        Detect double feeds by comparing document lengths
    --rollerdeskew[=(yes|no)] [no]
        Request scanner to correct skewed pages mechanically
    --swdeskew[=(yes|no)] [no]
        Request driver to rotate skewed pages digitally
    --swdespeck 0..9 (in steps of 1) [0]
        Maximum diameter of lone dots to remove from scan
    --swcrop[=(yes|no)] [no]
        Request driver to remove border from pages digitally
    --stapledetect[=(yes|no)] [no]
        Request scanner to halt if stapled pages are detected
    --dropout-front None|Red|Green|Blue|Enhance Red|Enhance Green|Enhance
Blue [None]
        One-pass scanners use only one color during gray or binary scanning,
        useful for colored paper or ink
    --dropout-back None|Red|Green|Blue|Enhance Red|Enhance Green|Enhance
Blue [None]
        One-pass scanners use only one color during gray or binary scanning,
        useful for colored paper or ink
    --buffermode[=(yes|no)] [no]
        Request scanner to read pages async into internal memory
  Sensors:

Type ``scanimage --help -d DEVICE'' to get list of all options for DEVICE.

List of available devices:
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Can you help me to solve this problem please ?

Olivier




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