Title: Microfilm copyboard with document index

Abstract: A copyboard (especially -- although not exclusively -- for microfilm cameras) has a movable document guide which slides diagonally. A counter is mounted on the document guide to display a frame identifying number, which appears adjacent the image in each frame. Since the counter is mounted on the document guide, the number which it displays always appears along side the photographic image, regardless of the original document size. A blip image is also placed on the copyboard to provide a white spot that facilitates automatic searching. When a special operation is performed, the blip image is made longer in order to provide a command signal.

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Inventors: Bookless, George William (Franklin Park, IL, US)

Application Number: 617471
Filing Date: 1975-09-30
Publication_date: 1976-09-21
Assignee: Bell & Howell Company (Chicago, IL)
Primary Class(es): 355/75 355/39, 355/40, 355/64, 396/310
Other Classes:
US Patent Ref:

1743310	Jan, 1930	Beidler	355/75.
3710696	Jan, 1973	Tucker et al.	354/105.

Other Refs:
Primary Examiner: Hartary, Joseph W.
Assistant Examiner:
Attorney: Walsh; Robert A.