Microfilm copyboard with document index
AssigneeBell & Howell Company
InventorGeorge William Bookless
Life of this patent
Estimating the term…
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.
Claims10
A copyboard especially suited for use in a microfilm system, said copyboard comprising a guide member having a digital display means integrally mounted thereon, and guide member mounting means for enabling movement of said guide member and said display means across said copyboard, said guide member mounting means commprising a main guideway and spaced parallel outrigger guideways disposed on opposite sides of said main guideway.
Dependencies are inferred from the claim text.