Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified backing or protective layer containing
Patent
1980-09-05
1982-10-12
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified backing or protective layer containing
430538, 430605, 430608, 162 78, 162 80, 162157C, 162182, G03C 186
Patent
active
043539815
ABSTRACT:
A silver halides photographic material with improved keeping quality, said material having a substrate formed by coating a base web with a film-forming resin, preferably a polyolefin resin, said base web being composed principally of natural pulp or a mixture of two or more different types of natural pulp having a post color number of 2 or below, said post color number being defined by the following formula: ##EQU1## [wherein Ro is brightness (%).times.(1)/(100) before fading treatment, R is brightness (%).times.(1)/(100) after 18-hour fading treatment at 85.degree. C. and 95% RH, and P is post color (PC) number which indicates the degree (nondimensional number) of fading].
REFERENCES:
patent: 3100732 (1963-08-01), Smedberg
patent: 3284283 (1966-11-01), Kindron et al.
patent: 3582337 (1971-06-01), Griggs et al.
patent: 3865685 (1975-02-01), Hebbel et al.
patent: 3885962 (1975-05-01), MacClaren
patent: 3901711 (1975-08-01), Iwaosa et al.
Ichihashi Yoshinobu
Kubbota Massashi
Noda Toru
Brown J. Travis
Mitsubishi Paper Mills Ltd.
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