APPAREIL D'ENREGISTREMENT SUR MICROFICHES COMPRENANT UN DISPOSITIF POUR EMPECHER AUTOMATIQUEMENT UNE DOUBLE EXPOSITION NON DESIREE

A reflection sensing apparatus detects the prior exposure history of an annotatable archival microfiche film card frame. A light source used to expose the microfiche to the record image is positioned to convert a reserved sensing area, which is outside the record image but within the frame, from an...

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Bibliographische Detailangaben

1. Verfasser:	H.C. OVSHINSKY
Format:	Patent
Sprache:	fre
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
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