Process for the photographic production of given transparency or

Details Process for the photographic production of given transparency or Process for the photographic production of given transparency or

1974-04-10

1976-01-06

Bowers, Jr., Charles L.

Gas separation: apparatus

Electric field separation apparatus

With means to add charged solid or liquid particles to...

96 27E, G03C 504

Patent

active

039308553

ABSTRACT:
Photographic process for the production of density profiles or transparency profiles in photographic layers comprising the steps: determination of the characteristic curve of the emulsion layer in the usual manner, graphic determination of the brightness distribution required for the subsequent exposure on the same photographic material, producing the brightness distribution determined in stage 2 by anamorphotic optical means and exposing the photographic material making use of this brightness distribution.

REFERENCES:
patent: 2995066 (1961-08-01), Dufresse
patent: 3148581 (1964-09-01), Lehmann
patent: 3165969 (1965-01-01), Gunn
patent: 3468230 (1969-09-01), Bellows
patent: 3513308 (1970-05-01), Tajima et al.
patent: 3580660 (1971-05-01), La Russa
patent: 3687543 (1972-08-01), Cochran et al.
patent: 3700325 (1972-10-01), Harper
"The Theory of the Photographic Process", 3rd Edition, pp. 482-483, Mees et al., 1966.

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