Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent
1989-01-25
1991-02-05
Haroian, Harry N.
Optics: image projectors
Selective data retrieval
Plural picture rows on single microcard
353DIG5, 353120, 353108, G03B 2114
Patent
active
049893300
ABSTRACT:
An overhead type file sheet projector including a projector body with a cover provided at an upper face opening thereof, a light source and a projecting condenser lens placed in the projector body. A support arm extends from one side of the projector body to above the projecting condenser lens with a reflecting mirror and a projecting lens system held by the support arm. A stage movably is fitted to guide rails provided at opposite sides of an upper portion of the projector body, and guide members are provided on the stage. The guide members allow movement of the file sheet in a direction orthogonal to the guide rails. A file sheet and a jacket holder for use in the overhead type file sheet projector include pitch movement cuts formed at at least one edge of the file sheet body or the jacket holder body. The pitch movement cuts are formed such that the pitch movement cuts may be engaged with a file sheet movement fitting member formed on a stage movably placed on an upper portion of the projector body.
REFERENCES:
patent: 2540872 (1951-02-01), Fleischer
patent: 3751153 (1973-08-01), Naito
patent: 3807850 (1974-04-01), Ozeki
patent: 4184754 (1980-01-01), Ozeki
Haroian Harry N.
Slidex Corporation
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