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:
Aug. 13, 1991
Filed:
Jun. 20, 1990
Ryuichi Takahashi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A light-sensitive material comprising a support and a light-sensitive layer provided thereon is disclosed. The light-sensitive layer contains silver halide, a reducing agent, an ethylenically unsaturated polymerizable compound and a base precursor composed of a salt of a carboxylic acid with an organic base. The silver halide, reducing agent, polymerizable compound and base precursor are contained in microcapsules which are dispersed in the light-sensitive layer. The microcapsules are obtained by (1) dispersing the base precursor in water, (2) emulsifying the resulting dispersion in the polymerizable compound, (3) further emulsifying the resulting emulsion in an aqueous medium containing a nonionic water-soluble polymer and (4) forming the shell of the microcapsules. It is preferred that the base precursor is dispersed in water in the presence of a nonionic water-soluble polymer or an emphoteric water-soluble polymer, and the resulting dispersion is emulsified in the polymerizable compound.