Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Positive
Patent
1980-12-16
1982-04-27
Downey, Mary F.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Positive
430406, 430411, 430934, G03C 550
Patent
active
043271723
ABSTRACT:
The definition of a photographic emulsion of the positive acting type that would normally produce a positive image is improved by normally exposing the emulsion to actinic radiation and developing the photographic emulsion, bleaching it, exposing the emulsion again to actinic radiation and redeveloping it to reverse the image that would normally result on the film.
REFERENCES:
patent: 1552791 (1925-09-01), Capstaff
patent: 2314380 (1943-03-01), Alburger
patent: 2327822 (1943-08-01), Russell et al.
patent: 3206313 (1965-09-01), Porter et al.
patent: 3282208 (1966-11-01), Ruderman
patent: 3317322 (1967-05-01), Porter et al.
patent: 3367778 (1968-02-01), Berriman
patent: 3591378 (1971-07-01), Altman
patent: 3632340 (1972-01-01), Illingsworth
patent: 3945827 (1976-03-01), Brown
patent: 4108661 (1978-08-01), Vanassche
PSA-MPD Course in Motion Pictures (Lesson Four-Film by George W. Cushman) APSA, PSA Journal, 1959, Nov. pp. 43-46.
James, Theory of the Photographic Process, 3rd Ed., 1966, pp. 150, 152, 154.
DuPont Computer Output Microfilm Training Seminar", 1973 by E. I. Du Pont de Nemours & Co., Section 4, and pp. 5-1, 5-2, 5-3.
Data Release, Kodaline Reproduction Film 2566 and 4566, Kodak Publication No. P-235, 4/75.
Neblette's Handbook of Photography and Reprography, 1977, pp. 29, 63-65.
Stevens, Microphotograpy-Photograph and Photofabrication at Extreme Resolution, 1968, pp. 90, 91, 478.
Data Sheet on Kodak Precision Line Film LPD4 and LPD7, KP0 73556b.
Technical Data Sheet for Cronalar SD Direct Positive Film, SD-4 & SD-7, by E. I. Du Pont de Nemours & Co.
Martin Charles E.
Rachwal Ervin J.
Dosse W. G.
Downey Mary F.
McBurnett R. D.
Western Electric Company Inc.
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