Patents by Inventor Yasushi Nozawa

Yasushi Nozawa 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: 6645710
    Abstract: A silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive silver halide emulsion layer, unit green-sensitive silver halide emulsion layer, and unit red-sensitive silver halide emulsion layer, each of which includes not less than two color-sensitive layers differing in sensitivity, wherein tabular grains having an aspect ratio of not less than 5.0 account for not less than 60% of the total projected area of silver halide grains contained in an emulsion layer having the highest sensitivity in each unit color-sensitive layer, and a grain number indicated by specific equation is not more than 1.00.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: November 11, 2003
    Inventors: Ryoji Nishimura, Yasushi Nozawa
  • Patent number: 6606455
    Abstract: A lens-fitted film unit comprises photographic mechanism provided with a taking lens, a shutter device and an aperture. The lens-fitted film unit has been loaded with an unexposed photographic film. The shutter device and the photographic film satisfying the conditional formula: log2(1/T)−log2(0.3×S)<−1.7 wherein T represents a shutter speed and S represents an ISO speed.
    Type: Grant
    Filed: August 28, 2001
    Date of Patent: August 12, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasushi Nozawa
  • Patent number: 6599689
    Abstract: A silver halide color negative photographic lightsensitive material comprises, on a support, at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer. The total coating amount of colored couplers in the lightsensitive material is less than 0.05 mMol/m2. The lightsensitive material contains at least one spectrally sensitized silver halide emulsion and a compound capable of absorbing light within the spectrally sensitizing region of the spectrally sensitized silver halide emulsion, and capable of reducing the sensitivity of the spectrally sensitized silver halide emulsion by at least 0.05 LogE.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: July 29, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Tamaoki, Yasushi Nozawa, Keisuke Matsumoto
  • Publication number: 20030104323
    Abstract: A silver halide color negative photographic lightsensitive material comprises, on a support, at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer. The total coating amount of colored couplers in the lightsensitive material is less than 0.05 mMol/m2. The lightsensitive material contains at least one spectrally sensitized silver halide emulsion and a compound capable of absorbing light within the spectrally sensitizing region of the spectrally sensitized silver halide emulsion, and capable of reducing the sensitivity of the spectrally sensitized silver halide emulsion by at least 0.05 LogE.
    Type: Application
    Filed: April 17, 2002
    Publication date: June 5, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hiroshi Tamaoki, Yasushi Nozawa, Keisuke Matsumoto
  • Publication number: 20020057906
    Abstract: A lens-fitted film unit comprises photographic mechanism provided with a taking lens, a shutter device and an aperture. The lens-fitted film unit has been loaded with an unexposed photographic film.
    Type: Application
    Filed: August 28, 2001
    Publication date: May 16, 2002
    Inventor: Yasushi Nozawa
  • Publication number: 20020055073
    Abstract: A silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive silver halide emulsion layer, unit green-sensitive silver halide emulsion layer, and unit red-sensitive silver halide emulsion layer, each of which includes not less than two color-sensitive layers differing in sensitivity, wherein tabular grains having an aspect ratio of not less than 5.0 account for not less than 60% of the total projected area of silver halide grains contained in an emulsion layer having the highest sensitivity in each unit color-sensitive layer, and a grain number indicated by specific equation is not more than 1.00.
    Type: Application
    Filed: August 24, 2001
    Publication date: May 9, 2002
    Inventors: Ryoji Nishimura, Yasushi Nozawa
  • Patent number: 6301442
    Abstract: A lens-fitted photo film unit for photographing an object includes a flash charger button as mode selector, which designates a selected one of a flashless mode and a flashing mode. An exposure aperture forms a color image by object light from the object. The image, if the flashless mode is designated, is recorded with first color balance in the exposure aperture, and if the flashing mode is designated, is recorded with second color balance. An electronic flash unit applies flash light to the object. A light balancing filter as color balance adjustor subjects the object light to correction if the flashless mode is designated, so as to set the first and second color balance substantially equal to one another.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: October 9, 2001
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mitsuhiro Uchida, Yuji Kume, Yasushi Nozawa
  • Patent number: 5576165
    Abstract: A silver halide color photographic material having improved stability with respect to fog and latent images, which contains at least one compound of formula (A) and at least one polymer having repeating units of formula (I) or (II): ##STR1## wherein R.sub.a1 to R.sub.a5 are as defined in the specification ##STR2## wherein R.sup.1 represents a hydrogen atom or an alkyl group; and Q represents a group selected from the group consisting of groups represented by formulae 1) to 4): ##STR3## (wherein the definitions of each symbols are the same as in the application) ##STR4## wherein E represents --COR.sub.21, --COOR.sub.22, --CONHR.sub.23, --CONHCOR.sub.24 or --SO.sub.2 R.sub.25 (wherein R.sub.21, R.sub.22, R.sub.23, R.sub.24 and R.sub.25 each represents an alkyl, aryl or cycloalkyl group, or a hydrogen atom); and G represents an alkylene group.
    Type: Grant
    Filed: January 17, 1996
    Date of Patent: November 19, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Masakazu Morigaki
  • Patent number: 5514534
    Abstract: Disclosed is a silver halide photographic light-sensitive material which comprises a support and at least one silver halide emulsion layer formed on the support. The emulsion layer contains at least one silver halide emulsion which is a tellurium-sensitized monodispersed emulsion.
    Type: Grant
    Filed: October 14, 1993
    Date of Patent: May 7, 1996
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Hiroyuki Mifune, Hirotomo Sasaki
  • Patent number: 5457019
    Abstract: A silver halid photographic emulsion contains an antioxidizing agent.
    Type: Grant
    Filed: January 21, 1994
    Date of Patent: October 10, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Mitsuhiro Uchida
  • Patent number: 5422231
    Abstract: A photographic product having an exposure function is described, which has therein a built-in color photographic material comprising a support having provided thereon at least one red-sensitive emulsion layer, at least one green-sensitive emulsion layer and at least one blue-sensitive emulsion layer and having a specific photographic sensitivity of 640 or more, wherein the built-in color photographic material is characterized by blue, green and red density function curves D (logE) in which in each curve a region defined by a gamma (<.gamma.>=dD/dlogE) of 0.4 or more is 2.8 or more as logE.
    Type: Grant
    Filed: March 4, 1994
    Date of Patent: June 6, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasushi Nozawa
  • Patent number: 5380631
    Abstract: A silver halide color photographic light-sensitive material having at least one negative silver halide emulsion layer on a support, wherein the silver halide color photographic light-sensitive material contains at least one type of a compound which reacts with the oxidized form of a developing agent to release a development inhibitor or a precursor of a development inhibitor and/or at least one type of a compound which cleaves after reacting with the oxidized form of a color developing agent, the cleaved compound of which in turn reacts with another molecule of the oxidized form of a color developing agent to cleave a development inhibitor, and contains at least one type of a compound selected from Formulas (A) and (B) below. In Formulas (A) and (B), each of R.sub.a1 to R.sub.a5 and R.sub.b1 to R.sub.b5 represents a hydrogen atom, an alkyl group or other groups. R.sub.a1 to R.sub.a5 are not simultaneously hydrogen atoms, and one or two of R.sub.b2 to R.sub.b5 are hydroxyl groups.
    Type: Grant
    Filed: January 8, 1993
    Date of Patent: January 10, 1995
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Nobuo Seto, Nobutaka Ohki, Masayoshi Toyoda
  • Patent number: 5166042
    Abstract: Disclosed is a silver halide color photographic photosensitive materials comprising, on a support, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer. The ISO speed of the photosensitive material is S. The difference (S.sub.G.sup.560 -S.sub.R.sup.560) is in the range of from -0.2 to 1.0. Here, S.sub.G.sup.560 and S.sub.R.sup.560 are, respectively, the speed of the green-sensitive silver halide emulsion layer and the speed of the red-sensitive silver halide emulsion layer with respect to monochromatic light of a wavelength of 560 nm, measured after subjecting the photosensitive material to a uniform exposure of 2/S lux.sec with white light.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: November 24, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasushi Nozawa
  • Patent number: 5091293
    Abstract: A high-speed color negative photographic material which comprises, a support having provided thereon, at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive emulsion layer, and is designated so as to acquire a specific photographic sensitivity (defined in detailed description of the invention) of 800 or above, and has a combined total of silver coverages ranging from 3.0 g/m.sup.2 to 9.0 g/m.sup.2 so as to minimize an increase in fog, a decrease in photographic speed and deterioration in granularity, which heretofore have occurred in high-speed photographic materials during long-range storage before used. In addition, the present photographic material enables enhancement of pressure resistance and processing efficiency.
    Type: Grant
    Filed: June 25, 1990
    Date of Patent: February 25, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Hideto Ikoma, Keiji Mihayashi, Yoshihiko Shibahara
  • Patent number: 4952485
    Abstract: A silver halide color negative photographic material having at least one blue-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one red-sensitive silver halide emulsion layer on a support, which is characterized in that the combined total of silver contents in the material is from 3.0 g/m.sup.2 to 8.0 g/m.sup.2 and the specific photographic sensitivity of the material is from 320 to less than 800. The material has improved sharpness and graininess and has high processability including pressure-resistance. Even after stored for long periods of time, the graininess of the material does not deteriorate.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: August 28, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yoshihiko Shibahara, Yasushi Nozawa, Keiji Mihayashi
  • Patent number: 4775612
    Abstract: A method for processing a silver halide color photographic material is disclosed, wherein a washing bath is replenished with water in an amount of from 2 to 50 times the volume of the preceding bath which is carried over with the photographic material into the washing bath per unit area of the photographic material to be processed, and washing in the washing bath is carried out in the presence of at least one compound represented by formula (I): ##STR1## wherein A represents a n-valent aliphatic, aromatic or heterocyclic linking group, wherein when n is 1, A represents a monovalent aliphatic, aromatic, or heterocyclic group, or a hydrogen atom; X represents --O--, --S--, or ##STR2## R.sup.1 and R.sup.2 each represents substituted or unsubstituted lower alkyl group; R.sup.3 represents a lower alkylene group; R.sup.4 represents a lower alkyl group; or R.sup.1 and R.sup.2, R.sup.1 and A, R.sup.1 and R.sup.3, R.sup.2 and A, or R.sup.2 and R.sup.
    Type: Grant
    Filed: December 8, 1986
    Date of Patent: October 4, 1988
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Akira Abe, Jun Arakawa, Yasushi Nozawa
  • Patent number: 4663271
    Abstract: A color photographic light-sensitive material comprising a support having provided thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer and at least one blue-sensitive silver halide emulsion layer is disclosed. The green-sensitive silver halide emulsion layer has a spectral sensitivity distribution whose wave-averaged wavelength of sensitivity ranges from 520 nm to 580 nm and the material further contains at least one silver halide emulsion layer which is light-responsive opposite to other layers and forms an image having substantially the same hue as that of the red-sensitive silver halide emulsion layer and whose spectral sensitivity distribution has a wave-averaged wavelength of sensitivity ranging from 500 nm to 560 nm. The material is excellent in both saturation of red and distinction of green colors.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: May 5, 1987
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Noboru Sasaki
  • Patent number: 4546075
    Abstract: A heat-developable photographic material comprising (a) an organic silver salt, (b) a photocatalyst, (c) a reducing agent, (d) a binder, and (e) at least one compound selected from the compound represented by the general formula (I) described below and the compound represented by the general formula (II) described below. ##STR1## wherein X represents a halogen atom; and R represents a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, an acyl group, a carbamoyl group, an alkylsulfonyl group, an arylsulfonyl group, an aralkylsulfonyl group or a heterocyclic residue, ##STR2## wherein X represents a halogen atom; Z represents a sulfur atom, an oxygen atom or >N--R.sub.1 (wherein R.sub.1 represents an alkyl group, an aryl group or an acyl group; (R')n represents a substituent present on the benzene nucleus; and n represents 0 or an integer from 1 to 4.
    Type: Grant
    Filed: September 9, 1983
    Date of Patent: October 8, 1985
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroshi Kitaguchi, Isamu Itoh, Itsuo Fujiwara, Yasushi Nozawa, Tadayoshi Kokubo
  • Patent number: 4452885
    Abstract: A heat-developable photographic material is disclosed. The material is comprised of (a) an organic silver salt, (b) a photocatalyst, (c) a reducing agent, (d) a binder, and (e) at least one compound selected from the group consisting of 2-trihalogenomethyl-3,4-oxadiazoles and the derivatives thereof as an antifogging agent. The use of component (e) does not present environmental pollution problems and successfully reduces fog density.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: June 5, 1984
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Yasushi Nozawa, Tadayoshi Kokubo, Isamu Itoh, Hiroshi Kitaguchi