Patents by Inventor Masakazu Morigaki

Masakazu Morigaki 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: 4939072
    Abstract: A color photograph comprising a support having provided thereon at least one photographic layer, wherein said at least one photographic layer contains a storage stability improving compound which forms a chemically inert and substantially colorless compound by combining chemically with the oxidation product of an aromatic amine color developing agent remaining in said color photograph after color development processing.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: July 3, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Nobuo Seto, Osamu Takahashi, Hideaki Naruse
  • Patent number: 4931382
    Abstract: A silver halide color photographic light-sensitive material containing a combination of a pyrazolo-azole magenta coupler and a specific dye image stabilizing agent is disclosed. The stabilizing agent is effective to improve fastness of a dye image formed by the coupler to light, heat and moisture.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: June 5, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Toshio Kawagishi, Kiyoshi Nakazyo, Nobuo Seto, Sadao Kamei
  • Patent number: 4929538
    Abstract: A novel silver halide color photographic material is provided, containing at least one coupler represented by formula (C-I) and at least one compound represented by formula (A-I) or (A-II) ##STR1## wherein Q.sub.1 represents an atomic group containing at least one nitrogen atom required to form a 5- or more membered nitrogen-containing heterocyclic ring together with the carbon atoms to which it is bonded; Z.sub.1 represents a hydrogen atom or a coupling-off group; R.sub.Cl represents an acyl or sulfonyl group; and R.sub.C2 represents a hydrogen atom or a C.sub.1-8 aliphatic group, or the substituents for R.sub.Cl, R.sub.C2, Z.sub.1, or Q.sub.1 form a dimeric or polymeric coupler; ##STR2## wherein R represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic group, or a hydrolyzable protective group; R.sub.1, R.sub.2, R.sub.3, R.sub.4, and R.sub.
    Type: Grant
    Filed: September 29, 1987
    Date of Patent: May 29, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Kozo Aoki
  • Patent number: 4906555
    Abstract: A multilayer silver halide color photographic material comprising a reflective support and a blue-, green- and red-sensitive emulsion layer containing at least one yellow coupler (represented by the general formula (I)), magenta coupler (represented by the general formula (II)), and cyan coupler (represented by the general formula (III)), respectively, and the blue-sensitive emulsion layer also contains at least one compound represented by the general formulae (A) or (B), all compounds are as disclosed in the specification.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: March 6, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeshi Hirose, Nobuo Furutachi, Masakazu Morigaki
  • Patent number: 4895793
    Abstract: A silver halide color photographic material, wherein a dye stabilizer as described in the claims is contained in a photographic layer such as a coupler-containing silver halide photosensitive emulsion layer. The dye images obtained eventually by developing the photographic material have improved fading or discoloring characteristics.
    Type: Grant
    Filed: April 15, 1987
    Date of Patent: January 23, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Masakazu Morigaki
  • Patent number: 4894320
    Abstract: A method of processing an imagewise exposed silver halide color photographic material comprising developing the material with a color developing solution, and then processing the material with a solution having a bleaching ability, wherein the processing solution having a bleaching ability contains a ferric complex salt comprising, as a complexing agent, an aromatic compound having at least one group represented by the following general formula (I): ##STR1## wherein X represents a hydrogen atom or an organic or inorganic cation, A represents a single bond or a divalent linking group, and R represents a hydrogen atom, an aliphatic group, an aromatic group, a heterocyclic ring group, an acyl group, a sulfonyl group, A or --CH.sub.2 PO.sub.3 X.sub.2.
    Type: Grant
    Filed: September 25, 1987
    Date of Patent: January 16, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shinji Ueda, Masakazu Morigaki, Kozo Aoki
  • Patent number: 4868101
    Abstract: A silver halide color photographic material, wherein a dye stabilizer as described in the claims is contained in a photographic layer such as a coupler-containing silver halide photosensitive emulsion layer. The dye images obtained eventually by developing the photographic material is excellent in preventing it from fading or discoloring.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: September 19, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Nobuo Seto
  • 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: 4864039
    Abstract: A novel 3,3'(2H,2'H)-spirobibenzofuran compound is disclosed. The spirobibenzofuran compound has a strong antioxidizing action and is thus useful as an antioxidant for dyes, synthetic polymer products such as rubbers, plastics and the like, and for petroleum. In addition, the compound is effective in preventing fading and discoloration of color photographic images obtained by a subtractive color process.
    Type: Grant
    Filed: March 30, 1987
    Date of Patent: September 5, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Masakazu Morigaki
  • Patent number: 4808515
    Abstract: A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, the silver halide color photographic material containing at least one pyrazoloazole type coupler represented by the general formula (I) and at least one compound represented by the general formula (II). ##STR1## wherein R.sub.1 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon coupling reacti1 Za, Zb and Zc each represents a methine group, a substituted methine grou .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; when the Zb--Zc bond is a carbon-carbon double bond, the Zb--Zc bond may be a part of a condensed aromatic ring; R.sub.
    Type: Grant
    Filed: September 24, 1986
    Date of Patent: February 28, 1989
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Nobuo Seto
  • Patent number: 4770987
    Abstract: A silver halide color photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer having dispersed therein lipophilic fine particles containing an image dye forming lipophilic coupler, wherein the lipophilic fine particles further contain at least one lipophilic compound having a water-solubility of not more than 1% by weight at 25.degree. C. and represented by formula (I):R.sub.0 SO.sub.2 X (I)wherein R.sub.0 represents a substituted or unsubstituted alkyl, aryl or heterocyclic group having 8 or more total carbon atoms; and X represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, a nitrogen-containing organic base, ammonium or a group represented by formula (A): ##STR1## wherein R.sub.1 represents a hydrogen atom or a substituted or unsubstituted alkyl, aryl or heterocyclic group; R.sub.2 represents a hydrogen atom, a halogen atom or a substituted or unsubstituted alkyl, aryl, acyloxy or sulfonyl group; and R.sub.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: September 13, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Takahashi, Hideaki Naruse, Masakazu Morigaki, Nobutaka Ohki, Tadahisa Sato
  • Patent number: 4767697
    Abstract: Photographic coupler solvents which are solid at ordinary temperature are described for incorporation in photographic emulsions and elements. The solvents are employed in combination with a cyan dye forming coupler of the specific phenol type and a discoloration inhibitor of the dihydroxybenzene ether type to improve long-term preservability of the developed cyan dye particularly by exposure to mild heat and humidity.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: August 30, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Makoto Umemoto, Yoshio Seoka, Masakazu Morigaki
  • Patent number: 4745050
    Abstract: There is provided a silver halide color photographic material containing a 6-hydroxychroman derivative in, combination with a specific coupler, i.e., a 5-pyrazolone type magenta coupler having an --SR group at the coupling position or a 5-pyrazolone type magenta coupler having an anilino group at the 3-position. The photosensitive material provides photographic images, quality of which is prevented from deteriorating as time passes. The photographic color images are free from discoloration or fading and do not form yellow stains on a white background.
    Type: Grant
    Filed: January 28, 1986
    Date of Patent: May 17, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Nobuo Seto, Masakazu Morigaki, Nobuo Sakai
  • Patent number: 4735893
    Abstract: A silver halide color photographic light-sensitive material containing a combination of a pyrazolo-azole magenta coupler and a specific dye image stabilizing agent is disclosed. The stabilizing agent is effective to improve fastness of a dye image formed by the coupler to light, heat and moisture.
    Type: Grant
    Filed: June 10, 1985
    Date of Patent: April 5, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Toshio Kawagishi, Kiyoshi Nakazyo, Nobuo Seto, Sadao Kamei
  • Patent number: 4704350
    Abstract: A silver halide color photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer having dispersed therein lipophilic fine particles containing a certain type of lipophilic pyrazoloazole coupler, and said lipophilic fine particles further contain at least one lipophilic mercapto compound represented by formula (II)R--SH (II)wherein R represents a substituted or unsubstituted alkyl, alkenyl, or aryl group, and said compound of formula (II) has a water solubility of not more than 1% by weight at 25.degree. C.The material is prevented from forming color stain caused by processing solution components that become incorporated into the materials during development processing.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: November 3, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Masakazu Morigaki, Nobutaka Ohki, Osamu Takahashi, Hideaki Naruse
  • 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: 4587210
    Abstract: A color photographic silver halide light-sensitive material is described, characterized by containing at least one of the compounds represented by the general formula (I) and their precursors. ##STR1## wherein R represents ##STR2## (wherein R.sub.1 and R.sub.2 are each a hydrogen atom or an alkyl group and may combine with R.sub.3 to form a ring having 5 to 10 carbon atoms, provided that R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, R.sub.3 is a substituted or unsubstituted aryl group, and n is an integer of 1 to 4), and R' has 1 to 20 carbon atoms and represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituent defined by R as defined above). This light-sensitive material provides color images which are stabilized, i.e., freed of fading and the discoloration of the white ground.
    Type: Grant
    Filed: March 30, 1984
    Date of Patent: May 6, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Michio Ono, Masakazu Morigaki, Takayoshi Kamio, Kozo Aoki, Kazuhiko Furuya
  • Patent number: H122
    Abstract: A silver halide color photographic light-sensitive material which comprises a support having thereon at least one silver halide emulsion layer containing dispersed therein at least one magenta coupler represented by the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom or a substituent, each represents a hydrogen atom or a substituent, X represents a hydrogen atom or a group capable of being eliminated upon coupling with an oxidation product of an aromatic primary amine developing agent, Z represents a nitrogen atom or --CR.sup.6 where R.sup.6 represents a hydrogen atom or a substituent and dimers or higher polymers thereof,together with at least one high boiling organic solvent represented by the following general formula (II): ##STR2## wherein R.sup.3, R.sup.4 and R.sup.
    Type: Grant
    Filed: July 19, 1985
    Date of Patent: September 2, 1986
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Toshio Kawagashi, Kiyoshi Nakazyo, Masakazu Morigaki
  • 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
  • Patent number: H851
    Abstract: A silver halide color photographic material which contains at least one coupler represented by the general formula (I) or (II-A) and at least one compound represented by the following general formula (III) in the same light-sensitive silver halide layer: ##STR1## wherein R.sub.1 represents an alkyl group, an aryl group, or a heterocyclic group; R.sub.2 represents a hydrogen atom, or a substituent group; and X represents a hydrogen atom, or a coupling-off group; ##STR2## wherein R represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an oxy radical, or a hydroxyl group; R.sub.3, R.sub.4, R.sub.5 and R.sub.6, which may be the same or different, each represents a hydrogn atom, or an alkyl group; and A represents a nonmetallic atomic group necessary for forming a 5-, 6- or 7-membered ring; provided that R.sub.3 may be linked with R.sub.4, R.sub.5 may be linked with R.sub.6, R may be linked with R.sub.3, or R.sub.3 may be linked with A to form a 5- or 6-membered ring.
    Type: Grant
    Filed: December 8, 1988
    Date of Patent: November 6, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideaki Naruse, Masakazu Morigaki, Nobuo Seto