False color photographic element and process

Details False color photographic element and process False color photographic element and process

1977-07-29

1978-12-26

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

With control means responsive to sensed condition

96 55, 96 67, 96 68, 96 69, 96 74, G03C 716, G03C 176

Patent

active

041314646

ABSTRACT:
A film or paper for producing a colored image from a monochromatic source image comprising four silver halide emulsion layers. A first layer of slow speed emulsion produces an underexposed negative image while a second layer of slow speed emulsion produces an underexposed positive image. The two remaining layers of fast speed emulsion produce an overexposed positive image and an overexposed negative image.
A novel process is disclosed wherein the film or paper is developed in a first developer and only two emulsion layers given reversal exposure. The four emulsions are then developed to three opposite tonal gradations in the three subtractive primary colors, thereby producing a false color image.

REFERENCES:
patent: 2258187 (1941-10-01), Mannes et al.
patent: 2393756 (1946-01-01), Dearing
patent: 3505068 (1970-04-01), Becket et al.
patent: 3663228 (1972-05-01), Wyckoff
patent: 3721823 (1973-03-01), Lishout et al.
patent: 3798037 (1974-03-01), Silverman

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