Fuji Photo Film Company, Limited

Mario Aoki

Kiyoshi Takeuchi

Shigeki Uehira

Yasuhiro Shimada

Seiji Ichijima

Hisashi Mikoshiba

Koji Wariishi

Naoto Matsuda

Akira Ikeda

Yasuaki Deguchi

Taiji Katsumata

Jun Ogasawara

Masaharu Sugai

Akira Ogawa

Yasuhiro Kato

Kiyoshi Kawai

Shigeru Kuwashima

A yellow dye-forming coupler represented by formula (I):  wherein Q represents a group of nonmetallic atoms that form a 5- to 7-membered ring in combination with the &#x2014;N&#x2550;C&#x2014;N(R)&#x2014;; Rand Reach represent a substituent; Rrepresents an alkyl group; m represents an integer of 0 to 4; and X represents a hydrogen atom, or a group capable of being split-off upon a coupling reaction with an oxidized product of a developing agent; and when Rrepresents a primary alkyl group, Rrepresents &#x2014;(CH)O&#x2014;Rin which Ris an alkyl group having 4 to 8 carbon atoms. A silver halide color photographic light-sensitive material having at least one yellow dye-forming coupler represented by formula (I) in at least one layer provided on a support.

Dye-forming coupler, silver halide photographic light-sensitive material and azomethine dye compound

A dye-forming coupler and compound of formula (I): wherein Q represents a residue that forms, together with &#x2014;N&#x2014;C&#x2550;N&#x2014;, a nitrogen-containing 6-membered ring; Rrepresents an aryl, heterocyclic, or &#x2014;(R)&#x2014;(R)group; X represents an aryl group; Y represents a hydrogen atom, or a group capable of being split-off upon a coupling reaction with an oxidized product of a developing agent:wherein,when Rrepresents an &#x2014;(R)&#x2014;(R)group, Rrepresents a methylene group, a methine group, or a carbon atom; r is 1 to 30; Rrepresents a substituent except for a hydrogen atom; m is 1 to 30; and the &#x2014;(R)&#x2014;(R)group does not represent a straight-chain alkyl group.

Dye-forming coupler, silver halide photographic light-sensitive material, and azomethine dye compound

A silver halide photographic light-sensitive material including a support and at least one light-sensitive layer formed on the support, wherein at least one of the light-sensitive layers contains at least one of the couplers represented by the following formula (I):

Silver halide photographic light-sensitive material

A silver halide photographic material is disclosed, which has on a reflective support at least one light-sensitive layer containing silver halide emulsion grains, wherein said reflective support has at least one waterproof resin coated layer which contains at least 2 g/m.sup.2 of a white pigment in waterproof resin coated layer at the light-sensitive layer coated side and further at least one light-sensitive layer contains at least one compound represented by following general formula (I) in a molecular dispersion state of a monomolecule or a dimer; ##STR1## wherein R.sub.1 to R.sub.4 each represent a hydrogen atom or a substituent, the sum total of the atomic weights of at least one of (R.sub.1 +R.sub.3) and (R.sub.2 +R.sub.4) being not more than 160; n represents 0, 1, or 2; and M represents a hydrogen atom or an alkali metal.

Silver halide photographic material and color image forming process

A process for producing a pyrazolecarboxamide derivative represented by formula (C) which comprises reacting a pyrazolecarboxylic ester compound represented by formula (A) with an amine compound represented by formula (B) in the presence of a Lewis acid: ##STR1## wherein R.sup.1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group; R.sup.2 represents a substituted or unsubstituted alkyl group; and R.sup.3 and R.sup.4 each represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, provided that R.sup.3 and R.sup.4 may be bonded to each other to form a ring.

Process for producing pyrazolecarboxamide derivative

A novel pyrazolonoxonol compound represented by formula (A) and a silver halide photographic material comprising such a pyrazolonoxonol compound: ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, an alkyl group or an aryl group, and the alkyl groups represented by R.sub.1 and R.sub.2 may bond each other to form a saturated 5- or 6-membered ring; R.sub.3 represents a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, a hydroxyl group, an alkoxy group, a carboxyl group, an ester group, a carbamoyl group, an amino group, an acylamino group, an ureide group, an urethane group or a cyano group; L.sub.1, L.sub.2, L.sub.3, L.sub.4 and L.sub.5 each represents a methine group, and the methine groups which are not adjacent to each other may bond each other to form a 5- or 6-membered ring; M represents a hydrogen atom or a monovalent cation; and m and n each represent an integer 0 or 1.

Pyrazolonoxonol compounds

Pyrazole compounds represented by formulae (A), (B), and (C): ##STR1## wherein R.sub.1 represents an unsubstituted alkyl group, an ester group, a carboxyl group, an amino group or an aryl group; R.sub.2 and R.sub.3 each represents an alkyl group or an aryl group, and the alkyl groups represented by R.sub.2 and R.sub.3 may bond each other to form a saturated 5- or 6-membered ring; R.sub.4 represents an alkoxy group or a carbonamido group; R.sub.5 and R.sub.6 each represents a hydrogen atom, an alkyl group or an aryl group, and the alkyl groups represented by R.sub.5 and R.sub.6 may bond each other to form a saturated 5- or 6-membered ring; R.sub.7 represents an aryl group, an ester group or a carboxyl group; and M represents a hydrogen atom or a monovalent cation.

1-carbamoyl-5-hydroxypyrazole compounds and salts thereof

'A positive-positive silver halide color photographic material comprising at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, at least one blue-sensitive silver halide emulsion layer, at least one hydrophilic colloid layer, and at least one colloidal silver layer on a support wherein said silver halide emulsion layer, hydrophilic colloid layer, or colloidal silver layer contains at least one dye of formula (I): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and each represents an alkyl group, an aryl gorup or a heterocyclic group; L.sub.1, L.sub.2 and L.sub.3 each represents a methine group; n.sub.1 represents 1 or 2; and any of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 has a sulfo group and the total of the groups is at least two or more. A method of forming a color image using the same is also disclosed.

Growing community of inventors

Minami-ashigara, Japan

Mario Aoki