# Re: Document Feeders

Andreas Rick (rickand@gemse.fr)
Tue, 27 Jul 1999 13:44:01 +0200

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To add still more confusion to the ADF discussion I would like
to add a small description of the automatic film strip feeder
for the Nikon Filmscanners:

When you put the film strip into the scanner
(Strip of up to 6 24*36mm slides/negatives )
the scanner does a very quick scan of the whole strip
to find out and store the positions of all images.
You can then query these positions and ask the Feeder to
go to any position. There you can do anything you can do
with a single slide: Preview, Scan, ...
(it is the scanner head which moves while scanning not the film).
There is a special command to eject the film.
If you don't do anything the film is ejected after some
minutes.

With this kind of scanner I can imagine the following
working scenarios:

1.) No Intervention:
The user puts in the film and selects "ADF" and clicks
on Scan. He/She should then find all the images on the disk/gimp.

2.) Personal selection
The user puts in the film and clicks on "Preview all"
which will scan all images in preview resolution.
He/She may then select the preview images one by one,
select the scanning area, the gamma, contrast etc.
Finally by clicking on "scan" all selected image regions
should be scanned

I think the Nikon film scanner is more similar to the
HP Flat Scanners in that the CCD moves during scanning, not the film.

Do you think we can find a common way to access these different
Feeders?

-
Andreas

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