Silverless photographic medium and process

Details Silverless photographic medium and process Silverless photographic medium and process

1983-06-30

1985-10-08

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Stabilizing

430440, 430441, 430495, 428 15, G03C 524

Patent

active

045460710

ABSTRACT:
A photographic image was produced by storing a geranium leaf in darkness and then projecting a light image on the leaf for a sufficient time to produce a suitable latent starch image, the leaf then being treated to extract the chlorophyll and then flooded with an iodine solution to stain the starch and develop the photographed image. Alternatively, instead of the leaf, a photographic medium may be employed including a film of a starch free, water, carbon dioxide and light permeable matrix, such as gelatin, having dispersed therein chloroplast containing algae or photosynthetic bacteria.

REFERENCES:
patent: 3871888 (1975-03-01), Wolwertz et al.
patent: 4065310 (1977-12-01), Dujardin et al.
Kirk-Othmer: Encyclopedia of Chem. Tech., 3rd Ed., vol. 21, pp. 492-496, Jun. 27, 1983.
The New Encyclopaedia Britannica, vol. 14, Apr. 1974, pp. 365-373.
McNally et al. (Abstract) of Ser. No. 35,291, filed May 6, 1970.
Chem. Abs., vol. 90, 1979: 164750d.

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