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. 25, 1996
Filed:
Jun. 22, 1994
Takanori Hioki, Kanagawa, JP;
Tadashi Ikeda, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the layer contains at least one compound represented by the following formula (I) and at least one compound represented by the following formula (X): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each represents a substituted or unsubstituted aliphatic group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; R.sub.4 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; and R.sub.1 and R.sub.2, and R.sub.3 and R.sub.4 each may be combined with each other to form a ring; ##STR2## wherein Z.sub.11 represents a sulfur atom, a selenium atom or a substituted nitrogen atom represented by ##STR3## in which R.sub.13 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group; Z.sub.12 represents a sulfur atom, a selenium atom, an oxygen atom or a substituted nitrogen atom represented by ##STR4## in which R.sub.13a has the same meaning as R.sub.13 ; R.sub.11 and R.sub.12 are the same or different and each represents a substituted or unsubstituted alkyl group; V.sub.11, V.sub.12, V.sub.13, V.sub.14, V.sub.15, V.sub.16, V.sub.17 and V.sub.18 are the same or different and each represents a hydrogen atom or a monovalent substituent; and adjacent two substituents thereof may be combined with each other to form a ring; L.sub.11, L.sub.12 and L.sub.13 are the same or different and each represents a substituted or unsubstituted methine group; n.sub.11 represents 1, 2 or 3; M.sub.11 represents a counter ion for neutralizing charge; and m.sub.11 is a number of 0 or more necessary for neutralizing the molecular charge.