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.

Date of Patent:
Apr. 24, 1990

Filed:

Jun. 20, 1988
Applicant:
Inventors:

Shigeru Ohno, Minami-ashigara, JP;

Yoshio Inagaki, Minami-ashigara, JP;

Keiichi Adachi, Minami-ashigara, JP;

Yasuhito Momoki, Minami-ashigara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430522 ; 430576 ; 430581 ; 546119 ; 546120 ;
Abstract

There are provided by the invention silver halide photographic light-sensitive materials containing dyestuff(s) represented by the general formula (I): ##STR1## wherein R.sup.1, R.sup.3, R.sup.4, R.sup.6, L.sub.1, L.sub.2, L.sub.3, Z.sup.1 and Z.sup.2 are groups conventional in this technical field, and R.sup.2 and R.sup.5 each represent an optionally substituted alkyl group, an optionally substituted aryl group, an optionally substituted heterocyclic group, COR.sup.7 and SO.sub.2 R.sup.7 (wherein R.sup.7 represents an optionally substituted alkyl group or an optionally substituted aryl group) (including the case where the dyestuff(s) is(are) in the form of salt(s)). The dyestuff(s) act(s) as a coloring agent for colored layer(s) for color filtering, antihalation, antiiradiation, etc. Silver halide photographic light-sensitive materials containing dyestuffs represented by the general formula (I) of the invention have remarkable effects, for example, that stability of dyestuffs in the membrane with time lapse is high, relative sensitivity is high, lowering of sensitivity in exposure to light under high humidity is small, image quality is excellent, there is only a little remaining color, and/or there is only a little fog, as compared with silver halide photographic light-sensitive materials containing conventional dyestuffs for the aforementioned purposes.


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