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:
Nov. 15, 1994
Filed:
Oct. 22, 1993
Applicant:
Inventors:
Tetsuo Yoshida, Minami-Ashigara, JP;
Tatsuo Heki, Minami-Ashigara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430509 ; 430567 ; 430571 ; 430598 ; 430599 ;
Abstract
The present invention relates to a direct positive photosensitive material comprising at least two kinds of core/shell-type internal latent image-type silver halide grains having different average grain sizes, the smaller grains being substantially constituted of cubic grains, or tetradecahedron grains mainly of the face (100). According to the present invention, a direct positive photosensitive material having a wide exposure latitude and an extremely improved storage stability can be obtained.