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:
May. 21, 1985
Filed:
Oct. 27, 1983
Applicant:
Inventors:
Yasuhiro Noguchi, Kanagawa, JP;
Yuji Mihara, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430574 ; 430583 ; 430940 ; 430409 ;
Abstract
An inner latent image type silver halide photographic emulsion which is spectrally sensitized by adding at least one monomethine cyanine dye represented by general formula (II) to a direct positive inner latent image type silver halide photographic emulsion and thereafter adding additionally at least one monomethine cyanine dye represented by general formula (I) to said emulsion ##STR1## (the symbols are as defined in the appended claims). A remarkable increase of spectral sensitivity, an increase of maximum density and a decrease of minimum density can be obtained by this silver halide photographic emulsion.