Apparatus for producing microform records from hard copy, cathod

Details Apparatus for producing microform records from hard copy, cathod Apparatus for producing microform records from hard copy, cathod

1980-01-21

1982-11-23

Wintercorn, Richard A.

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 75, G03B 2752, G03B 2770

Patent

active

043602657

ABSTRACT:
Apparatus for producing microform records includes an image-reducing projection system positioned above a hard copy and transparency-receiving imaging station defining a horizontal document plane. An opaque platform is located at the document plane for supporting hard copy and a transparent plate is located at or near the document plane for supporting a transparency. Overhead lamps are provided to direct light downwardly upon the hard copy, and a light source, preferably a cathode ray tube, is provided below this document plane to project light upwardly through the document plane. The cathode ray tube or other light source produces a uniform light field or image-containing light field, the former when a transparency is placed at said document plane, the latter either when a transparency is or is not located at or near said document plane. When an image-containing light field is directed through a transparency at the document station, the microform record produced includes both the image in the image-containing light field and the object of the transparency as an overlay of the same.

REFERENCES:
patent: 3947112 (1976-03-01), Hahn et al.
patent: 3966317 (1976-06-01), Wacks et al.
patent: 4080065 (1978-03-01), Spence-Bate
patent: 4123157 (1978-10-01), Klose et al.

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