MICROFILM RETRIEVING/READING DEVICE

PURPOSE:To prevent the stick of dust on an optical system, and to facilitate maintenance by storing a projecting lens and an image sensor in a case to form hermetically closed room together with a transparent plate. CONSTITUTION:A reader unit 50 is provided with a glass plate 54 as an example of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: IGARASHI SHUNKICHI
Format: Patent
Sprache:eng
Schlagworte:
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