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. 27, 1993
Filed:
May. 03, 1991
Applicant:
Inventor:
Tsuyoshi Mitsuhashi, Tokyo, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430567 ; 430547 ; 430596 ; 430597 ; 430598 ; 430606 ; 430963 ;
Abstract
A direct positive silver halide photographic light-sensitive material which is improved in gradation and suitable for rapid processing comprises a support having thereon a silver halide emulsion layer containing surface-fogged type direct positive silver halide grains, wherein said direct positive silver halide emulsion layer comprises two or more silver halide emulsions substantially different in sensitivity and/or gradation; the ratio of the total area of (111) face to and total surface area of grains in said emulsions is not less than 50%; and the average silver iodide content of grains in said emulsions is not more than 5 mol%.