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:
Apr. 07, 1998
Filed:
Feb. 13, 1996
Applicant:
Inventor:
Shigeharu Urabe, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430569 ; 430567 ;
Abstract
A silver halide photographic emulsion is disclosed, which comprises core/shell type tabular silver halide grains having a diameter/thickness ratio of at least 2 and (111) faces as parallel main planes; wherein at least 30%, on a projected area basis, of the total silver halide grains are tabular grains which contain in their individual shells at least 15 dislocation lines reaching to the grain edges from the interface of the core and the shell and have the ratio of the shell part containing dislocation lines to the core, on a projected area basis, in the range shown as the shaded part in FIG. 1, thereby ensuring high sensitivity and high sharpness.