Patents by Inventor Nobuo Furutachi

Nobuo Furutachi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4865963
    Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, said silver halide emulsion layer containing a pyrazoloazole series magenta coupler represented by general formula [I] ##STR1## wherein, R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a releasing group which is released at the reaction with the oxidation product of an aromatic primary amine developing agent; at least one of said R.sup.1 and R.sup.2 is an alkyl group having a secondary or tertiary carbon atom directly bonded to the skeleton, at least one of said R.sub.1 and R.sub.2 is a sulfonamidoalkyl group or a sulfamoylalkyl group; and the magenta coupler may form a dimer or more polymer at the position of said R.sup.1, R.sup.2 or X.By the combined use of high boiling point organic solvent and ultraviolet absorbent, light fastness and coloring property are markedly improved.
    Type: Grant
    Filed: September 30, 1986
    Date of Patent: September 12, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Tadahisa Sato, Seiki Sakanoue, Akio Mitsui, Minoru Sakai, Masakazu Morigaki, Hidetoshi Kobayashi, Nobuo Sakai, Kiyoshi Nakazyo, Takeshi Hirose, Toshio Kawagishi
  • Patent number: 4857444
    Abstract: A silver halide color photographic material is disclosed, comprising a support having provided thereon a red-sensitive layer, a green-sensitive layer, and a blue-sensitive layer, in which at least one of couplers represented by the formulae (I) and/or (II), at least one of couplers represented by the following formula (III), and at least one of couplers represented by the following formula (IV) are respectively incorporated in the light-sensitive layers different from each other in color sensitivity: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.4 each represents a substituted or unsubstituted aliphatic, aromatic or heterocyclic group;R.sub.3, R.sub.5, and R.sub.6 each represents a hydrogen atom, a halogen atom, an aliphatic group, an aromatic group, or an acylimino group or, when taken together, R.sub.3 and R.sub.2 represent non-metallic atoms necessary for forming a nitrogen-containing 5- or 6-membered ring;R.sub.7 represents an alkoxy group, an aryloxy group, or a heterocyclic oxy group;R.sub.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: August 15, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Tadashi Ogawa, Nobuo Furutachi
  • Patent number: 4840878
    Abstract: A method for forming a color image is disclosed, which comprises imagewise exposing a multi-layer silver halide color photographic material comprising a reflective support having provided thereon at least three silver halide emulsion layers different in color sensitivity, each of which separately contains at least one coupler selected from a specific combination of cyan, magenta, and yellow couplers, and processing the exposed material with a color developing solution containing substantially no benzyl alcohol for a period of not more than 2 minutes and a half. A color image excellent in color reproducibility and preservability can be obtained rapidly without using benzyl alcohol.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: June 20, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Nobuo Furutachi, Kozo Aoki, Kiyoshi Nakazyo, Genichi Furusawa
  • Patent number: 4822730
    Abstract: A silver halide color photographic material comprising a support having formed thereon at least one silver halide emulsion layer containing a pyrazoloazole series magenta coupler having at least one group expressed by the formula [S] below at a position other than the coupling active position.--(A).sub.n --L--B [S]wherein A represents a substituted or unsubstituted alkylene group, a substituted or unsubstituted cycloalkylene group, a substituted or unsubstituted arylene group, or a substituted or unsubstituted aralkylene group, in which in the main chain of said alkylene group, cycloalkylene group, arylene group, or aralkylene group, --O--, --S--, --CO--, --CO.sub.2 --, --OCO--, ##STR1## may be contained; L represents ##STR2## B represents a hydrogen atom or a substituted or unsubstituted alkyl or aryl group which does not contain therein --SO.sub.2 --; n is 0 or 1; and R and R' each represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group.
    Type: Grant
    Filed: May 28, 1987
    Date of Patent: April 18, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Toshio Kawagishi, Kiyoshi Nakazyo
  • Patent number: 4774172
    Abstract: Silver halide color photographic materials are described, which comprise at least one silver halide emulsion layer coated on a support and which are characterized by the incorporation of a pyrazoloazole type coupler of the following general formula (I) into the silver halide emulsion layer(s) or the adjacent layer(s) thereto: ##STR1## wherein Za and Zb each may represent ##STR2## R.sup.1 and R.sup.2 each may represent a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being removed upon a coupling reaction with an oxidized form of an aromatic primary amine type developing agent; when Za.dbd.Zb is a carbon-carbon double bond, this may be a part of the aromatic ring in the formula: with the proviso that at least one of R.sup.1 and R.sup.2 is a group represented by general formulae (II) or (III): ##STR3## wherein R.sup.3 represents a hydrogen atom or a substituted or unsubstituted alkyl group; R.sup.4 represents a hydrogen atom or a substituent; R.sup.
    Type: Grant
    Filed: November 28, 1986
    Date of Patent: September 27, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Kawagishi, Takayoshi Kamio, Keizo Kimura, Tadahisa Sato, Nobuo Furutachi
  • Patent number: 4774166
    Abstract: A method for the formation of a color image is described, wherein a silver halide color photographic material comprising a photographic layer provided on a reflective support is imagewise exposed and then subjected to development for a period of time within 2 minutes and 30 seconds with a color developer which contains an aromatic primary amine developing agent but does not substantially contain benzyl alcohol, wherein said photographic layer contains at lesat one specific non-coloring coloration accelerator selected from the group consisting of compounds represented by formulae (I) through (VII) defined in the specification.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: September 27, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Minoru Sasaki, Tadahisa Sato, Nobuo Furutachi, Takeshi Hirose
  • Patent number: 4705863
    Abstract: Pyrazolo[1,5-b][1,2,4]triazole derivatives are produced by ring closure of an amidoxime compound having a pyrazolyl group. The product can be used as a photographic magenta coupler as such. It is also useful as an intermediate for the magenta coupler, as a dye developer for diffusion transfer process, as an intermediate for the dye releasing agent, and as an intermediate for the photographic sensitizing dye.
    Type: Grant
    Filed: March 20, 1985
    Date of Patent: November 10, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadahisa Sato, Toshio Kawagishi, Nobuo Furutachi
  • Patent number: 4696893
    Abstract: A silver halide color photographic material capable of providing color images having good coloring properties and being excellent in color reproducibility even in a developer using hard water, which contains a cyan coupler represented by formula (I) or (II) and 5-pyrazolone magenta coupler having an arylthio group at the coupling position of said coupler, wherein said arylthio group includes an aliphatic oxy group or an aromatic oxy group at an ortho-position with respect to the sulfur atom of the arylthio group, the aliphatic group or aromatic group of said aliphatic oxy group or aromatic oxy group being unsubstituted or substituted by at least one member selected from(a) a halogen atom,(b) a cyano group,(c) an unsubstituted or substituted aliphatic, aromatic, or heterocyclic sulfonyl, sulfinyl, or phosphonyl group, and(d) a group represented by the formula ##STR1## (e) a group represented by the formula--A.sub.2 -M).sub.n B.sub.
    Type: Grant
    Filed: September 30, 1985
    Date of Patent: September 29, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Umemoto, Kotaro Nakamura, Nobuo Furutachi
  • Patent number: 4621046
    Abstract: A novel pyrazolo[1,5-b]-1,2,4-triazole derivative represented by the general formula (I) is described. ##STR1## wherein R.sub.1 and R.sub.2 which may be the same or different, each represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon coupling; and Y represents a hydrogen atom or an aralkyl group.
    Type: Grant
    Filed: February 19, 1985
    Date of Patent: November 4, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadahisa Sato, Toshio Kawagishi, Nobuo Furutachi
  • Patent number: 4595650
    Abstract: A silver halide color photographic light-sensitive material is described, comprising a support having coated thereon at least one silver halide emulsion layer, the color photographic light-sensitive material having a photographic layer containing at least one kind of magenta coupler of 5-pyrazolone type having an arylthio group at the coupling position thereof, the arylthio group having an alkoxy group or an aryloxy group at the ortho position to the sulfur atom thereof and the alkoxy group and the aryloxy group being substituted with a cyano group, a halogen atom, a sulfonyl group, a sulfinyl group, a phosphonyl group, or an ##STR1## group, wherein A represents a chemical bond, an alkylene group, an arylene group, an oxygen atom, a sulfur atom, or an imino group; and B represents a hydroxy group, an alkoxy group, an aryloxy group, a hydrogen atom, an alkyl group, an aryl group, a heterocyclic group, an acyclic amino group, or a hydrazino group.
    Type: Grant
    Filed: July 20, 1984
    Date of Patent: June 17, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Masakazu Morigaki, Takeshi Hirose
  • Patent number: 4594313
    Abstract: A color image forming process which comprises developing a silver halide photographic material using an aromatic primary amine developing agent in the presence of a blocked magenta image forming coupler represented by the following general formula (I): ##STR1## wherein R represents a hydrogen atom or a substituent; X represents a hydrogen atom, a halogen atom, a carboxy group or a coupling releasable group; Cp represents a coupling block group capable of forming a colorless or alkali-soluble product by reaction with the oxidation product of a color developing agent; A represents ##STR2## when Cp is bonded and --N.dbd. when Cp is not bonded; B and E each represents ##STR3## when Cp is bonded and --N.dbd. or ##STR4## when Cp is not bonded; D represents --N.dbd.
    Type: Grant
    Filed: March 12, 1985
    Date of Patent: June 10, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Yoshinobu Yoshida
  • Patent number: 4590153
    Abstract: A silver halide color photographic material comprising a support having thereon at least a silver halide photographic layer, and photographic material contains (1) at least one magenta coupler containing at least one coupler moiety derived from the compound selected from the group consisting of compounds represented by following formula (I) and (2) at least one metal complex selected from the group consisting of compounds represented by following formula (II), (III), (IV) and (V): ##STR1## wherein X represents a hydrogen atom or a coupling releasing group; R.sup.1 represents a hydrogen atom or a substituent, Za, Zb and Zc each represents a methine group; a substituted methine group; a methylene group, a substituted methylene group, .dbd.N--, or --NH--; one of the Za-Zb bond and the Zb-Zc bond being a double bond and the other being a single bond; ##STR2## wherein M represents Cu, Co, Ni, Pd or Pt; R.sup.2, R.sup.3, R.sup.4 and R.sup.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: May 20, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Kawagishi, Nobuo Furutachi
  • Patent number: 4588679
    Abstract: A color photographic silver halide light-sensitive material is described. The material contains a 1H-pyrazolo[3,2-C]-s-triazole type coupler and, as a color image stabilizer, a compound represented by the formula (I): ##STR1## (wherein all the symbols are as defined in the appended claims). Addition of the color image stabilizer of the formula (I) improves the light fastness of magenta color images formed from the 1H-pyrazolo[3,2-C]-s-triazole type coupler. Thus the light-sensitive material of the invention exhibits high photographic performance.
    Type: Grant
    Filed: January 9, 1984
    Date of Patent: May 13, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Nobuo Furutachi
  • Patent number: 4585728
    Abstract: A silver halide color photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer is described, the color photographic light-sensitive material having at least one layer containing (1) at least one 2-equivalent magenta coupler represented by formula (I): ##STR1## wherein W represents a phenyl group substituted with at least one halogen atom, alkyl group, alkoxy group, alkoxycarbonyl group or cyano group; Y represents an acylamino group or an anilino group; and Z represents a group capable of being released upon coupling, and (2) at least one amine compound having at least two groups other than a hydrogen atom represented by formula (II): ##STR2##
    Type: Grant
    Filed: June 7, 1985
    Date of Patent: April 29, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Takeshi Hirose
  • Patent number: 4585732
    Abstract: A silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, the photographic light-sensitive material containing a color image forming coupler comprising a nitrogen containing heterocyclic 5-membered ring-condensed-5-membered ring in which the coupling active position is substituted with the nitrogen atom of a carboxylic acid amido group containing at least one fluorine atom.The magenta color image forming coupler has good color forming property and provides a magenta color image having excellent spectral absorption property and good fastness to light.
    Type: Grant
    Filed: December 27, 1984
    Date of Patent: April 29, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Kawagishi, Nobuo Furutachi
  • Patent number: 4584266
    Abstract: A silver halide color photographic light-sensitive material comprising a support having coated thereon at least one silver halide emulsion layer, the color photographic light-sensitive material having a photographic layer containing at least one 2-equivalent 5-pyrazolone type magenta coupler represented by the general formula (I) described below and an amount of a calcium atom contained in the color photographic light-sensitive material being up to 10 mg/m.sup.2. ##STR1## wherein W represents an aryl group; X represents an aliphatic group, an aryl group or a heterocyclic group; and Y represents an acylamino group, a ureido group or an anilino group.The silver halide color photographic light-sensitive material containing the 2-equivalent 5-pyrazolone magenta coupler and the restricted amount of the calcium atom exhibits photographic properties which are not influenced by variations in the pH of the color developing bath and can provide color images fast to light and heat.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: April 22, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Kotaro Nakamura, Nobuo Furutachi
  • Patent number: 4576910
    Abstract: A silver halide color photographic light-sensitive material containing in its silver halide emulsion layer a latex of magenta color image-forming polymer or copolymer coupler capable of coupling with an oxidation product of an aromatic primary amine developing agent, wherein said coupler has repeating units derived from the monomer represented by the formula (I), (II), (III), (IV) or (V) ##STR1## wherein R.sub.1 represents a hydrogen atom, a lower alkyl group containing 1 to 4 carbon atoms or a chlorine atom, R.sub.2, R.sub.3 and R.sub.
    Type: Grant
    Filed: June 11, 1984
    Date of Patent: March 18, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tsumoru Hirano, Nobuo Furutachi
  • Patent number: 4559297
    Abstract: A silver halide photographic light-sensitive material is described, the material comprising a support having thereon at least one photographic layer containing at least one compound represented by formula (I): ##STR1## wherein R represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, ##STR2## a substituted or unsubstituted silyl group, a substituted or unsubstituted phosphoric acid group, or a divalent group derived from the above-described groups which forms a ring together with the oxygen atom linking to --R and the carbon atom which is in the ortho-position to --O--R and to which ##STR3## is not bonded; R.sub.1, R.sub.2 and R.sub.
    Type: Grant
    Filed: February 7, 1985
    Date of Patent: December 17, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Nobuo Furutachi, Masakazu Morigaki, Kiyoshi Nakazyo
  • Patent number: H131
    Abstract: Silver halide color photographic materials contain pyrazoloazole type magenta couplers having at least one hydroxyphenyl group bonded thereto. The silver halide color photographic materials are improved in color developability and color image light fastness. The pyrazoloazole type magenta couplers are 5-membered ring/5-membered ring condensed nitrogen heterocyclic type couplers.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: September 2, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Furutachi, Tadahisa Sato, Toshio Kawagishi, Kiyoshi Nakazyo
  • Patent number: H706
    Abstract: A silver halide color photosensitive material is disclosed, characterized in that a lipophilic fine grain dispersed in at least one hydrophilic colloidal layer formed on a support contains at least one compound of formula (I) and at least one compound of formula (II):R.sub.1 --SO.sub.2.M.sub.1 (I)R.sub.2 --SO.sub.3.M.sub.2 (II)wherein each of R.sub.1 and R.sub.2 represents an aliphatic group having 8 or more carbon atoms, an aromatic group having 8 or more carbon atoms or a heterocyclic group having 8 or more carbon atoms; each of M.sub.1 and M.sub.2 represents a hydrogen atom or an inorganic or organic salt-forming atom or atomic group; also M.sub.1 represents a protective group to be hydrolyzed with alkali; and sodium dodecylbenzenesulfonate is excluded from the compounds of formula (II). The combined use of the compounds of formulae (I) and (II) can effectively control the formation of stains on the processed white ground after the lapse of time without substantially lowering the maximum color density.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: November 7, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Nobuo Furutachi, Masakazu Morigaki