Controlled double exposure method and apparatus

Details Controlled double exposure method and apparatus Controlled double exposure method and apparatus

1981-08-07

1982-10-05

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

Methods

354109, 354276, 354291, G03B 2732, G03B 1724, G03B 1726, G03B 1500

Patent

active

043525555

ABSTRACT:
A positive-to-positive color photographic paper is given a first exposure to create a latent image of a desired background such as a magazine cover with a large area unexposed, utilizing a negative plate and original color artwork. The preexposed paper is stored in a light-tight package. Later, a second exposure of a desired subject is made on the previously unexposed portion using a positive plate of the originally exposed material in a specialized view camera. The view camera uses several selectable fixed focus positions to enable unskilled personnel to perform the second exposure. The paper is then processed rapidly at high temperature, producing a high quality color photograph in a few minutes. A typical use is to provide a person with their photograph as the cover picture on a simulated national magazine cover.

REFERENCES:
patent: 360314 (1887-03-01), Lewis
patent: 547855 (1895-10-01), Lee
patent: 1268609 (1918-06-01), Powell
patent: 3665828 (1972-05-01), Reiter
patent: 3928863 (1975-12-01), Stewart et al.
patent: 4268144 (1981-05-01), Wheeler
patent: 4310232 (1982-01-01), Reed

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