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. 27, 1989
Filed:
Nov. 12, 1987
Applicant:
Inventor:
Shunichi Ishikawa, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J / ; G03C / ;
U.S. Cl.
CPC ...
430138 ; 503215 ; 42840221 ; 264-41 ; 264-47 ;
Abstract
A process for the preparation of light-sensitive microcapsules comprises encapsuling silver halide and a polymerizable compound with a shell comprising an aminoaldehyde resin in an aqueous medium in the presence of an anionic protective colloid, wherein the anionic protective colloid is a mixture of pectin and a polymer comprising a repeating unit derived from styrenesulfonic acid such as poly(styrenesulfonic acid) and a copolymer of an ethylenic unsaturated compound and styrenesulfonic acid.