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. 15, 1993
Filed:
Nov. 25, 1991
Applicant:
Inventors:
Mariko Kato, Hino, JP;
Takeshi Sampei, Hino, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430607 ; 430551 ; 430608 ; 430610 ; 430935 ;
Abstract
A method of producing a silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support, provided thereon, a photographic layer including a silver halide emulsion layer and the photographic layer contains a hydrazine compound for forming an extremely high contrast image even when developed with a developer having a pH value of not higher than 11. The light-sensitive material is produced by the method comprising steps of