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:
Sep. 08, 1987
Filed:
Apr. 29, 1986
Kenji Kumashiro, Hachioji, JP;
Toshifumi Iijima, Kokubunji, JP;
Hideo Akamatsu, Hachioji, JP;
Syoji Matsuzaka, Hachioji, JP;
Abstract
A silver halide photographic light-sensitive material comprising a least one silver halide emulsion layer, wherein said silver halide emulsion layer comprises a phenol-type cyan coupler having at the 2-position of the penol nucleus thereof a group selected from the group consisting of a phenyl-ureido group, a naphthyl-ureido group and a heterocyclic ureido group, and having at the 5-position thereof an acylamino group, and a negative type silver halide grains of a core-shell structure which consisting of silver bromide or silver iodobromide and a plurality of shells essentially consisting of silver bromide or silver iodobromide, said plurality of shells comprising an outermost shell containing 0 to 10 mol % of silver iodide, a highly iodide-containing shell provided inside said outermost shell of which silver iodide content is at least 6 mol % of silver iodide, a highly iodide-containing shell provided inside said outermost shell of which silver iodide content is at least 6 mol % higher than that of said outermost shell, and an intermediate shell provided between said outermost shell and said highly iodide-containing shell of which a silver iodide content is at least 3 mol % higher than that of said outermost shell, and at least 3 mol % lower than that of said highly iodide-containing shell.