The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 21, 1977
Filed:
May. 19, 1975
Yasuhiro Noguchi, Asaka, JA;
Toshinao Ukai, Asaka, JA;
Kenji Sashihara, Asaka, JA;
Takao Masuda, Asaka, JA;
Fuji Photo Film Co., Ltd., Minami-ashigara, JA;
Abstract
A heat developable light-sensitive material comprising a support having thereon or therein at least (a) an organic silver salt, (b) a light-sensitive silver halide or a light-sensitive silver halide-forming component and (c) as a reducing agent at least one ester selected from the group consisting of (1) esters of carboxylic acids derived from phenol derivatives in which at least one of the o-positions thereof is substituted, preferably substituted with a bulky group, and mono- or poly-hydric alcohols, and (2) esters of alcohols derived from polyhydric phenols in which at least one of the o-positions thereof is substituted, preferably substituted with a bulky group, and mono- or polycarboxylic acids, to reduce the thermal fog produced at the background after heat development processing, and to increase the whiteness of the unexposed areas and the stability to normal room illumination.