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:
Jul. 13, 1993
Filed:
Dec. 06, 1991
Shunichi Ishikawa, Kanagawa, JP;
Taku Nakamura, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A process for preparation of a light-sensitive material containing microcapsules is disclosed. The light-sensitive material comprises a light-sensitive layer provided on a support. The microcapsules are dispersed in the light-sensitive layer. The process of the present invention comprises the steps of: (1) mixing a silver halide emulsion and the reducing agent or the photopolymerization initiator with the polymerizable compound to prepare a light-sensitive composition; (2) emulsifying the composition in an aqueous medium to prepare an aqueous emulsion; (3) forming a shell around the droplets of the composition contained in the aqueous emulsion to prepare a microcapsule dispersion; (4) coagulating the aqueous medium to set the microcapsule dispersion; (5) storing the set microcapsule dispersion; (6) melting the aqueous medium to prepare a coating solution of the light-sensitive layer; and (7) coating the solution on the support. Between the steps (2) and (3), the process preferably further contains the steps of: (a) precipitating the droplets of the light-sensitive composition in the aqueous emulsion; (b) removing at least 50% of the supernatant medium from the droplets; and (c) emulsifying the droplets in an aqueous medium again.