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:
Mar. 25, 2003
Filed:
Sep. 15, 2000
Norihiro Omae, Minami-Ashigara, JP;
Shunichi Aida, Minami-Ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide color negative photographic lightsentive material comprises at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer on a support. The lightsensitive material has an ISO speed of 640 or more, the total silver content of 3.0 to 9.0 g/m . Each of the red-sensitive emulsion layer, green-sensitive emulsion layer and blue-sensitive emulsion layer comprises two or more silver halide emulsion sub-layers having the same color sensitivity but different in speed to each other, and each of the red-sensitive sub-layer having the highest speed, green-sensitive sub-layer having the highest speed and blue-sensitive emulsion sub-layer having the highest speed has a silver content of 0.3 to 1.3 g/m . At least two sub-layers selected from the red-sensitive sub-layer having the highest sensitivity, green-sensitive sub-layer having the highest sensitivity and blue-sensitive sub-layer having the highest speed contain silver halide grains in which tabular silver halide grains occupy 50% or more of the total projected area of all the silver halide grains in the sub-layer, and the tabular grains have an average aspect ratio of 8 or more.