Konishiroku Photo Industry Co., Ltd.

Konica Corporation

Tamotsu Kojima

Takaya Endo

Mitsuto Fujiwhara

Shui Sato

Wataru Fujimatsu

Hiroyuki Imamura

Syunji Matsuo

Katsunori Kato

Tugumoto Usui

Nobuaki Kagawa

Wataru Ishikawa

Shinri Tanaka

Yasuhiko Kawashima

Shigemasa Itoh

Akio Iijima

Tomio Horiuchi

Kazumi Minahara

Osamu Ezawa

A process for producing a chlorohenylhydrazine compound is disclosed, which comprises chlorinating at least one hydrogen atom on the phenyl nucleus in a beta-imidated phenylhydrazine compound and subsequently hydrolyzing the chlorinated compound. Said chlorophenylhydrazine compound is useful as starting material for the production of herbicide, insecticide and photographic coupler is produced in high yield and low cost.

Process for producing chlorophenylhydrazine compounds

A silver halide photographic light sensitive material containing a water-soluble oxonol dye is disclosed. The dye is represented by the following Formula I: ##STR1## wherein R.sup.1 and R.sup.2 are each a hydrogen atom, an alkyl group, an aryl group or a alkenyl group; R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are each a hydrogen atom, an alkyl group, an aryl group, an alkenyl group or a heterocyclic group provided that at least one of said R.sup.3 , R.sup.4, R.sup.5 and R.sup.6 is a heterocyclic group and R.sup.3 and R.sup.4, and R.sup.5 and R.sup.6 are respectively allowed to bond to form a heterocyclic ring; and the groups represented by said R.sup.1 through R.sup.6 are allowed to be substituted or unsubstituted provided that at least one of said groups a water-solubilizing group or a group having a water solubilizing group; L.sub.1, L.sub.2 and L.sub.3 are each a substituted or unsubstituted methine group; and n is an integer of zero, 1 or 2.

Silver halide photographic light-sensitive material containing oxonol dye

A photographic acylacetanilide yellow coupler having at the acyl or anilide portion thereof a moiety represented by --X--Y--Z where X represents --NHCO-- or --CONH-- radical, Y represents a divalent organic radical, Z represents ##STR1## wherein R.sub.1 is an alkyl or aryl radical, and a color photographic material containing an acylacetanilide yellow coupler.

Silver halide color photographic material containing yellow coupler

A photographic yellow coupler having a general formula selected from the group consisting of (I), (II) and (III) ##STR1## wherein A is a yellow coupler residue defined by removing one hydrogen atom of a active methylene group from a yellow coupler having the active methylene group; Q is a group having a formula selected from the group consisting of ##STR2## and ##STR3## (where X and Y are individually a hydrogen atom or an alkyl, acyl, aryl or aralkyl group; Z is a hydrogen atom or an alkyl, aryl or aralkyl group; and R.sub.1 and R.sub.2 are individually a hydrogen atom or an alkyl, aryl or aralkyl group or both of R.sub.1 and R.sub.2 together may form a benzylidene group or a cycloalkyl group); and Q' is a group of the formula --CH.sub.2 --CH.sub.2 -- or ##STR4## (wherein R.sub.3 is a hydrogen or halogen atom or an alkoxy group; R.sub.4 is a hydrogen or halogen atom, an amino, acylamino, ureido, lower alkyl, alkoxy or hydroxy group; and R.sub.4 and R.sub.5 are individually a lower alkyl group).

Photographic silver halide materials containing yellow coupler

The present invention relates to a process for forming a yellow color image which requires contacting exposed silver halide grain with a developer in the presence of a particular yellow coupler.

Silver halide photographic materials containing photographic yellow

The present invention relates to a method of forming a dye image which involves processing a light-sensitive silver halide photographic image, after its imagewise exposure, in the presence of a novel yellow coupler as depicted in the formula below and an aromatic primary amine color developing agent ##STR1## wherein R.sub.1 represents cyano, alkyl carbonyl, phenylalkyl carbonyl, phenoxy alkyl carbonyl, phenylthio alkyl carbonyl, arylcarbonyl, alkyl phenyl carbonyl, alkoxy phenyl carbonyl, R.sub.2, R.sub.3, R.sub.4, R.sub.5 independently are hydrogen, halogen, alkyl, alkoxy, aryloxy, alkylacyloxy, arylacyloxy, acylamino, N-alkyl carbamoyl, N-phenylcarbamoyl, alkylsulfonamido, arylsulfonamido, N-alkyl sulfamoyl, N-phenylsulfamoyl, or imido, R.sub.6 represents cycloalkyl, alkenyl, naphthyl, thienyl, benzothienyl, furyl, or pyranyl, or a group of the formula (II): ##STR2## wherein R.sub.7, R.sub.9 and R.sub.11 are each hydrogen or alkyl, the sum of the carbon atoms in R.sub.7, R.sub.9 and R.sub.11 being 5 to 20, R.sub.8 and R.sub.10 are hydrogen, and Y represents non-metal atoms required for forming 2,5-dioxo-imidazolidine, 2-3,5-trioxo-imidazolidine, 2,5-dioxo-triazolidine, 2,4-oxazolidinedione, 2,4-thiazolidinedione, 2(1H)-pyridone, 2(1H)-pyrazone, 5(1H)-imidazolone, 5(1H)-triazolone, 2(1H)-pyrimidone, 2-pyrazolone (5), 2-isothiazolone(5), 2(1H)-quinaoxazolone, 4(3H)-pyrimidone, 2-benzoxazolone, 4-isooxazolone(5), 3-fluorone(2), 4-imidazolone(2), 3-pyrazolone, 2-tetrazolone(5), 3-tetrazolone(5), and derivatives thereof.

Method of forming dye image

A color photographic material comprising a light-sensitive silver halide emulsion layer coated on a support containing a magenta coupler represented by general formual [I] or [II]: ##STR1## wherein, R.sub.1 represents a hydrogen atom, an alkyl, aryl or 5 or 6-membered heterocyclic group, R.sub.2 represents a hydrogen atom, an alkyl, aryl, 5 or 6-membered heterocyclic, amino, sulfamoyl or carbamoyl group, R.sub.3 represents an alkyl, aryl or 5 or 6-membered heterocyclic group having from 12 to 35 carbon atoms, R.sub.4 represents an alkyl group having from 2 to 8 carbon atoms or a phenyl group, and R.sub.5 represents an alkyl group having from 2 to 8 carbon atoms.

Light-sensitive silver halide color photographic materials

A process for forming color photographic images using magenta couplers which afford excellent resistance to formalin, is described.

Process for forming magenta dye images

A coloured magenta coupler for photography is disclosed which is represented by the following general formula: ##STR1## wherein R is substituted phenyl, R.sub.1 and R.sub.2 individually stand for hydrogen, halogen, hydroxyl, alkyl, alkoxy or acylamino, with the proviso that one of R.sub.1 and R.sub.2 is hydroxyl but that both are not hydroxyl simultaneously, R.sub.3 is hydrogen, halogen, alkyl, nitro or acylamino and R.sub.4 stands for hydrogen, halogen or a monovalent organic residue.

Silver halide emulsion containing colored magenta coupler for photography

A process for forming yellow image in a light-sensitive silver halide photographic material which uses as a yellow image-forming a coupler a compound of the formula ##STR1## wherein A is a yellow image-forming coupler residue having an active methylene group; ##STR2## is a group which has been substituted for one hydrogen atom of the active methylene group in said coupler residue A; and Z is a group selected from alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridine-diyl groups.

Acylacetanilide coupler with heterocyclic diacyl amino coupling-off group

Process of forming dye images using color couplers containing a monohydro-polyfluoroalkyl group.

Process for forming color photographic images

A cyan coupler of the formula A -- NHCO(CF.sub.2 CF.sub.2).sub.n H wherein A is a phenolic or naphtholic cyan coupler residue and n is a positive integer of 1 to 7, incorporated in a light-sensitive silver halide photographic material produces a cyan dye photographic image which is favorable in light absorption characteristics and excellent in fastness when the coupler is developed with an aromatic primary amine type developing agent.

Process for forming cyan dye photographic images

An improved photographic system in which a new yellow coupler is employed. The yellow coupler has the formula, ##STR1## wherein X is a --N= or --CH= group; Cp is a residue formed by removing one hydrogen atom of the active methylene group of an acetanilide yellow coupler; n is an integer of 1 to 4; and R is a hydrogen or halogen atom, or an alkyl, alkoxy, alkylcarbonyl, aryl, arylcarbonyl, amino, acylamino, carboxyl, nitrile, aralkyl or aralkyloxy group, provided that in case n is 2 or more the R groups may be the same or different, and two adjacent R groups in combination may form a benzene ring.

Silver halide emulsion containing photographic yellow coupler

An imagewise-exposed, light-sensitive silver halide color photographic material is developed, by use of developer, in the presence of a compound of the general formula: ##EQU1## wherein A is a residue formed by removing one of the hydrogen atoms of the active methylene group of an active methylene group-containing yellow image-forming coupler of the acyl acetanilide type; X is a hydrogen atom, or an alkyl, acyl, carboxymethyl, alkoxycarbonylmethyl, carbamylmethyl, aryl, aralkyl, nitro or amino group; and Y and Z are individually a hydrogen atom, or an alkyl, ureido, aryl, aralkyl, benzylidene, styryl, or anilino group.

Growing community of inventors

Hino, Japan

Tamotsu Kojima