Photocopying – Projection printing and copying cameras – Identifying – composing – or selecting
Patent
1979-11-29
1984-06-12
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Identifying, composing, or selecting
354 77, 355 45, 355 54, G03B 2752, G03B 2770
Patent
active
044538227
ABSTRACT:
Apparatus for producing microform records from various image sources, such as hard copy or cathode ray tube images fed from various data sources, includes an image-reducing projection system into which is selectively directed light reflected from hard copy or light preferably from the face of a cathode ray tube to which white background CRT image-forming signals are fed from any one of a number of selectable data sources. The reduced image involved is preferably applied first to a non-archival heat developable mask-forming film, like a dry silver film, and then the image on this film is transferred preferably to an archival film capable of later receiving additional data on unused portions thereof and most advantageously arranged as a microfiche card. The cathode ray tube face is preferably positioned immediately below a platform-containing or receiving image field area. The platform normally is adapted to receive hard copy thereupon. Manual controls are provided for setting-up the apparatus for producing microform records of either hard copy or cathode ray tube face images. In the latter case, the platform, which is preferably white opaque, is moved away from the face of the cathode ray tube so that the light image thereon is directed up into the image-reducing projection system. Means are provided for determining exposure times for imaging upon the mask-forming film in accordance with the average background light intensity of the light reflecting from the hard copy or the background light on the cathode ray tube face, depending upon whether hard copy or cathode ray tube face microform imaging is desired by operation of the appropriate manual control.
REFERENCES:
patent: 3966317 (1976-06-01), Wacks et al.
patent: 4067650 (1978-01-01), Spence-Bate
patent: 4068941 (1978-01-01), Spence-Bate
patent: 4074935 (1978-02-01), Spence-Bate
patent: 4123157 (1978-10-01), Klose et al.
Energy Conversion Devices Inc.
Norris Lawrence G.
Wintercorn Richard A.
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