Patents by Inventor Satoru Shimba

Satoru Shimba 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: 5389500
    Abstract: Disclosed is a method for forming color photographic images which comprises printing of color images obtained by use of a color photographic light-sensitive material, having on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer onto a printing color photographic light-sensitive material having on a support, a yellow color forming layer, a magenta color forming layer and a cyan color forming layer, wherein the following requirements (A) and (B) are fulfilled,(A) wavelength .lambda..sub.B.sup.max to give the maximum value in spectral sensitivity distribution of a blue-sensitive silver halide emulsion layer is within the limits of 415 nm to 470 nm, and the sensitivity of the blue-sensitive emulsion layer at 480 nm is not more than 35% of the sensitivity at .lambda..sub.B.sup.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: February 14, 1995
    Assignee: Konica Corporation
    Inventors: Hiroshi Shimazaki, Kuniaki Uezawa, Satoru Shimba, Yoshitaka Yamada
  • Patent number: 5376508
    Abstract: Disclosed is a method for forming a silver halide color photographic image comprising:exposing a silver halide color photographic light-sensitive material for photographing which comprises a support and provided thereon at least one blue-sensitive silver halide emulsion layer (B layer), at least one green-sensitive silver halide emulsion layer (G layer) and at least one red-sensitive silver halide emulsion layer (R layer) to light to obtain a latent image; processing said latent image to obtain a color negative image;printing said color negative image on a silver halide color photographic light-sensitive material for printing which comprises a support and provided thereon a yellow color-forming layer (Y layer), a magenta color-forming layer (M layer) and a cyan color-forming layer (C layer) to obtain a color photographic image; wherein:(A) the spectral sensitivity distribution of the G layer S.sub.G (.lambda.) has a maximum value at a certain point .lambda..sub.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: December 27, 1994
    Assignee: Konica Corporation
    Inventors: Yoshitaka Yamada, Satoru Shimba, Hiroshi Shimazaki
  • Patent number: 5252444
    Abstract: Disclosed is a silver halide color photographic light-sensitive 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 the support, wherein the maximum sensitivity wavelength .lambda..sub.B of the spectral sensitivity distribution in said blue-sensitive silver halide emulsion layer at 400 nm.ltoreq..lambda..sub.B .ltoreq.470 nm, the sensitivity of said blue-sensitive silver halide emulsion layer at 480 nm does not exceed 40% of the sensitivity at the maximum sensitivity wavelength .lambda..sub.B and the gradient of said blue-sensitive silver halide emulsion layer after blue light separation exposure .gamma..sub.SB and the gradient of said blue-sensitive silver halide emulsion layer after white light exposure .gamma..sub.WB bears the relationship of .gamma..sub.SB /.gamma..sub.WB .ltoreq.1.25.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: October 12, 1993
    Assignee: Konica Corporation
    Inventors: Yoshitaka Yamada, Hiroshi Shimazaki, Satoru Shimba
  • Patent number: 5212054
    Abstract: A silver halide color photographic light-sensitive material of which the color reproducibility and printing suitability are kept improved against the variation of photographing conditions, such as a change in light source, is disclosed. The photographic material comprises a support and provided thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, wherein at least one of said emulsion layers is of three-layer structure comprising a low-speed elemental emulsion layer, a medium-speed elemental emulsion layer and a high speed emulsion layer arranged in this sequence from the side facing the support, and a maximum color density of said medium-speed emulsion layer is not more than 0.35.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: May 18, 1993
    Assignee: Konica Corporation
    Inventors: Koji Tashiro, Hideaki Haraga, Atsuo Ezaki, Hiroshi Ideda, Katsutoyo Suzuki, Satoru Shimba, Miki Kon, Kenji Michiue, Yasushi Irie, Toshihiko Yagi, Syoji Matsuzaka, Keisuke Tobita
  • Patent number: 5180657
    Abstract: A silver halide color photographic light-sensitive material which offers high chroma and excellent hue reproduction comprises a support having thereon a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a red-sensitive silver halide emulsion layer, wherein the maximum sensitivity wavelength .lambda..sub.B of a spectral sensitivity distribution of said blue-sensitive silver halide emulsion layer is in the range of 410 nm.ltoreq..lambda..sub.B .ltoreq.470 nm; and the sensitivity of said blue-sensitive silver halide emulsion layer at 480 nm is not more than half of the sensitivity at said wavelength .lambda..sub.B. Preferably, the maximum sensitivity wavelength .lambda..sub.G of said green-sensitive layer is in the range of 530 nm.ltoreq..lambda..sub.G .ltoreq.560 nm and the sensitivity of said green-sensitive layer at the wavelength of 500 nm is not less than one-fourth of the sensitivity at SG.sub.max ; the maximum sensitivity wavelength .lambda..sub.
    Type: Grant
    Filed: December 18, 1990
    Date of Patent: January 19, 1993
    Assignee: Konica Corporation
    Inventors: Fumie Fukazawa, Yasushi Irie, Hiroshi Shimazaki, Katuya Yabuuchi, Satoru Shimba
  • Patent number: 4666825
    Abstract: A method for processing silver halide photographic light-sensitive material which comprises color developing an imagewise-exposed silver halide photographic light-sensitive material and then bleach-fixing said color developed light-sensitive material, said light-sensitive material comprising support having thereon a silver halide emulsion layer containing monodispersed silver halide particles and a photographic cyan coupler having the Formula [I]: ##STR1## wherein X is a hydrogen atom or a radical that can be split off by the reaction of said coupler with the oxidized product of an aromatic primary amine color developing agent; R.sub.1 is an aryl or a heterocyclic radical; and R.sub.2 is a ballasting radical which provides non-diffusibility to said cyan coupler and a cyan dye formed therefrom.
    Type: Grant
    Filed: March 4, 1986
    Date of Patent: May 19, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Shimba, Masao Iwamuro, Kenji Ito, Katutoyo Suzuki, Fumio Hamada
  • Patent number: 4528263
    Abstract: Disclosed is a light-sensitive silver halide color photographic material having at least one light-sensitive silver halide emulsion layer on a support, characterized in that said light-sensitive silver halide emulsion layer contains a cyan coupler represented by the formula [I] shown below, and said light-sensitive silver halide emulsion layer and/or a layer contiguous to said light-sensitive silver halide emulsion layer contains at least one of a timing DIR compound represented by the formula [II] shown below and a non-timing type DIR compound: ##STR1## wherein X, R.sub.1 and R.sub.2 are as defined in the specification; ##STR2## wherein Cp, TIME and Z are as defined in the specification.
    Type: Grant
    Filed: February 27, 1984
    Date of Patent: July 9, 1985
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Sugita, Yasuo Tsuda, Kenji Ito, Satoru Shimba
  • Patent number: 4490460
    Abstract: A silver halide color photographic material in which the photographic characteristics do not deteriorate when contacted with formaldehyde.
    Type: Grant
    Filed: March 3, 1983
    Date of Patent: December 25, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Shimba, Yoshikazu Watanabe, Kazuo Kato, Kiyotoshi Yamashita
  • Patent number: 4480028
    Abstract: Silver halide photographic material having at least one light sensitive silver halide emulsion layer, at least one non-light sensitive hydrophilic colloidal layer, and optionally a third type of layer, wherein at least one of said emulsion layers, colloid layers, or third type of layers has, in a single layer, both a magenta coupler of Formula I and a development inhibitor releasing compound having a development inhibitor radical of Formula II or III, said Formula is wherein R.sub.1 is selected from benzamido, anilino, and phenylureido, each having a sulfonamido group and R.sub.2 is selected from aryl and heterocyclic groups; said Formula II is ##STR1## wherein R.sub.3 is selected from hydrogen, halogen, acylamino, alkyl, benzothiazolinylidenamino and phenyl substituted alkoxy; said Formula III is ##STR2## wherein X is a group of non-metallic atoms necessary to complete, together with the C.dbd.N group, a five or six membered heterocyclic ring.
    Type: Grant
    Filed: January 28, 1983
    Date of Patent: October 30, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kazuo Kato, Yoshikazu Watanabe, Kenji Kumashiro, Satoru Shimba
  • Patent number: 4458012
    Abstract: Disclosed is a light-sensitive silver halide color photographic material having at least one light-sensitive silver halide emulsion layer on a support, characterized in that said light-sensitive silver halide emulsion layer contains a cyan coupler represented by formula [I] shown below, and said light-sensitive silver halide emulsion layer and/or a layer contiguous to said light-sensitive silver halide emulsion layer contains a colored cyan coupler represented by the formula [II]: ##STR1## wherein X, R.sub.1 and R.sub.2 are as defined in the specification; ##STR2## wherein (Coup--).sub.c, L, Q.sub.1, Q.sub.2, M, j, and G are as defined in the specification.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: July 3, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Kenji Ito, Satoru Shimba, Yasuo Tsuda, Hiroshi Sugita
  • Patent number: 4450228
    Abstract: Disclosed is a light-silver silver halide color photographic material, having a blue sensitive silver halide emulsion layer, a green sensitive silver halide emulsion and a red sensitive silver halide emulsion on a support; which comprises said red sensitive silver halide emulsion containing at least one kind of the compounds represented by the formula [I] shown below, and further the content of the silver halide contained in all of the aforesaid light-sensitive silver halide emulsion layers being 7.5 g/m.sup.2 or more as calculated on silver, and the content of the silver halide contained in said red sensitive silver halide emulsion being 3.5 g/m.sup.2 or more as calculated on silver: ##STR1## wherein, X, R.sub.1 and R.sub.2 as defined in the specification.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: May 22, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Satoru Shimba, Kenji Ito, Yasuo Tsuda, Hiroshi Sugita
  • Patent number: 4434225
    Abstract: Disclosed is a light-sensitive silver halide color photographic material having at least one light-sensitive silver halide emulsion layer on a support, characterized in that said light-sensitive silver halide emulsion layer contains a cyan coupler represented by the formula [I] shown below, and said light-sensitive silver halide emulsion layer and/or a layer contiguous to said light-sensitive silver halide emulsion layer contains at least one of a timing DIR compound represented by the formula [II] shown below and a non-timing type DIR compound: ##STR1## wherein X, R.sub.1 and R.sub.2 are as defined in the specification; ##STR2## wherein Cp, TIME and Z are as defined in the specification.
    Type: Grant
    Filed: February 22, 1983
    Date of Patent: February 28, 1984
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Hiroshi Sugita, Yasuo Tsuda, Kenji Ito, Satoru Shimba
  • Patent number: H1127
    Abstract: A silver halide photographic material that contains a polymer including a repeating unit represented by the following general formula (I) and having a weight average molecular weight of no more than 30,000: ##STR1## wherein R.sup.1 is a hydrogen atom or an alkyl group; Z represents the atomic group necessary to form a lactam ring, an oxazolidone ring or a pyrrolidone ring; A is a simple linkage, --CO--, --COO(CH.sub.2).sub.n or --CONR.sup.2 (CH.sub.2).sub.n where R.sup.2 is a hydrogen atom or an alkyl group, and n is an integer of 1-6. This photographic material experiences a minimum level of increase in fogging during rapid processing and produces image having improved sharpness and granularity.
    Type: Grant
    Filed: October 3, 1990
    Date of Patent: January 5, 1993
    Assignee: Konica Corporation
    Inventors: Hiroshi Shimazaki, Fumie Fukazawa, Masayuki Kurematsu, Kenjiro Ushiyama, Satoru Shimba
  • Patent number: H1243
    Abstract: A silver halide color photoqraphic light-sensitive material having an excellent graininess, sharpness and color reproducibility, particularly of green colors including yellowish qreen and bluish qreen is disclosed. Among silver halide emulsion layers, the blue-sensitive layer is located furthest from a support and the outside thereof, has a non-light-sensitive layer. And the optical specifications of these two layers are as specified in the claims.
    Type: Grant
    Filed: March 9, 1992
    Date of Patent: October 5, 1993
    Assignee: Konica Corporation
    Inventors: Satoru Shimba, Keisuke Tobita, Kenji Michiue, Katuya Yabuuchi