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:
Jun. 17, 1997
Filed:
Jan. 09, 1995
Applicant:
Inventor:
Hitoshi Adachi, Hino, JP;
Assignee:
Konica Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ;
U.S. Cl.
CPC ...
430567 ; 430570 ; 430966 ;
Abstract
A silver halide black and white photographic light-sensitive material is disclosed, comprising a support having thereon two silver halide emulsion layers, wherein a silver halide emulsion layer provided further from the support contains tabular silver halide grains having an aspect ratio of not less than 3, another silver halide emulsion layer containing silver halide grains having an aspect ratio of not more than 2.5; both silver halide grain emulsions are each spectrally sensitized by adding thereto a spectral-sensitizing dye in the form of a dispersion of solid particles dispersed in an aqueous medium.