Patents by Inventor Yuki Okuyama

Yuki Okuyama 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: 11951675
    Abstract: A surface of a workpiece has a smooth region, and a stepped region including a step. A three-dimensional object printing method includes first print operation of ejecting liquid from a head onto the smooth region, and second print operation, antecedent to or subsequent to the first print operation, of ejecting liquid from the head onto the stepped region. The amount of change in an angle of ejection, which is angle formed by a first normal line and a second normal line, during execution of the second print operation is larger than the amount of change in the angle of ejection during execution of the first print operation. The first normal line is a line normal to the ejection face. The second normal line is a line normal to the surface of the workpiece at a point of intersection with the first normal line.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: April 9, 2024
    Assignee: Seiko Epson Corporation
    Inventors: Kohei Utsunomiya, Masayuki Okuyama, Yuki Ishii
  • Patent number: 11946606
    Abstract: Provided is a wavelength conversion member capable of improving brightness of a light source device. Wavelength conversion member according to the present disclosure includes: first phosphor layer that is disposed on an incidence side where excitation light enters, and contains a plurality of first phosphor particles; and second phosphor layer that is disposed on a side reverse to the incidence side and contains a plurality of second phosphor particles. First phosphor particles include an activation component, second phosphor particles include an activation component same as or different from the activation component included in first phosphor particles, and a concentration of the activation component in first phosphor layer is lower than a concentration of the activation component in second phosphor layer.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: April 2, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Ueda, Masayuki Hogiri, Yoshihisa Nagasaki, Kojiro Okuyama
  • Publication number: 20240105743
    Abstract: An imaging device having a superior light-shielding property for a charge-holding section is provided. The imaging device includes: an Si {111} substrate extending along a horizontal plane; a photoelectric conversion section provided in the Si {111} substrate and generating charges corresponding to a light reception amount by photoelectric conversion; a charge-holding section provided in the Si {111} substrate and holding charges transferred from the photoelectric conversion section; and a light-shielding section including a horizontal light-shielding part positioned between the photoelectric conversion section and the charge-holding section in a thickness direction and extending along the horizontal plane and a vertical light-shielding part orthogonal thereto.
    Type: Application
    Filed: December 5, 2023
    Publication date: March 28, 2024
    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Yuki MIYANAMI, Atsushi OKUYAMA
  • Patent number: 5171654
    Abstract: A toner for electrostatic image developing is disclosed. It is prepared by giving a mechanical impact force to radically polymerized particles containing a colorant and a low molecular weight polyolefine so as to have the low molecular weight polyolefine exist at a ratio of 5 to 40% by number on a surface of the particles. The toner has a uniform and good electrification property, high fixability and no offsetting property.
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: December 15, 1992
    Assignee: Konica Corporation
    Inventors: Hiroshi Yamazaki, Yuki Okuyama, Yoshiaki Koizumi, Isao Endou, Satoru Ikeuchi
  • Patent number: 4968573
    Abstract: In a method of developing an electrostatic latent image formed on an electrostatic latent image-carrying member with a developer comprising a magnetic carrier and a toner in a non-contact manner under application of an oscillating electric field to a development region, the improvement comprising the surface of said magnetic carrier is covered with an insulating material, and magnetization (M) of said magnetic carrier when measured under application of a magnetic field of 1000 Oersted and weight average diameter (R) of the same expressed in terms of micro meter satisfy the following relation:30.ltoreq.M.ltoreq.-0.8 R+150(wherein 10.ltoreq.R.ltoreq.150).
    Type: Grant
    Filed: December 16, 1986
    Date of Patent: November 6, 1990
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Tadashi Kaneko, Yuki Okuyama, Mitsutaka Arai, Yoko Yamamoto, Satoru Ikeuchi
  • Patent number: 4897330
    Abstract: An image forming method wherein a latent image is formed by subjecting an image retainer having a photoconductive layer to a image exposure, a toner image is formed by developing the latent image with a toner, each the step of forming the latent image and the step of forming the toner image are repeated at least one time, and a plurality of toner images formed on the image retainer to a transfer material. At least one of the toner images is formed with a toner which has a spectral transmissivity as to substantially absorb a visible light but transmit a light having a wavelength of 750 nm or more. The latent image is formed by subjecting the image retainer bearing the toner image to an image exposure with a light containing a wavelength component of 750 nm or more.
    Type: Grant
    Filed: December 9, 1987
    Date of Patent: January 30, 1990
    Assignee: Konica Corporation
    Inventors: Hisashi Shoji, Satoshi Haneda, Kunihisa Yoshino, Yuki Okuyama
  • Patent number: 4883734
    Abstract: Disclosed are a toner for development of electrostatic image, comprising as the main component a resin obtained by allowing a polymer containing a polymer component with low molecular weight and a polymer component with high molecular weight, at least the polymer component with low molecular weight containing a carboxylic acid component, to react with a polyvalent metal compound, and a method of fixing a toner image employing the toner described above.According to the present invention, there can be provided a toner for development of electrostatic image which has more improved fixability without lowering the anti-off-set property already improved, and also which can be prepared with good reproducibility without causing gelation to occur although the metal compound may be formulated therein, and can be improved in fixability without making charging characteristics unstable and at the same time without bringing about lowering in anti-off-set property, and thus an excellent toner image can be fixed.
    Type: Grant
    Filed: March 1, 1988
    Date of Patent: November 28, 1989
    Assignees: Konica Corporation, Sekisui Kagaku Kogyo Kabushiki
    Inventors: Satoru Ikeuchi, Mitutaka Arai, Yuki Okuyama, Hideki Yuri, Tomoo Shiohara, Yasuhiko Oyama
  • Patent number: 4882258
    Abstract: There are disclosed a toner for development of an electrostatic image which comprises containing (a) a mixture of a lower molecular weight polymer component and a higher molecular weight polymer component, and said lower molecular polymer component is a resin obtained by reacting a polymer containing a carboxylic acid component with a polyvalent metal compound to form cross-linking through a metal atom and (b) offset preventive agent; and also an electrostatic latent image developer which comprises (A) toner particles mainly comprising a resin obtained by reacting a carboxy group existing in a polymer component with a polyvalent metal compound and (B) resin coated-carrier particles coated with a fluorine-containing resin on a surface of a magnetic particle or inorganic fine particles.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: November 21, 1989
    Assignee: Konica Corporation
    Inventors: Satoru Ikeuchi, Mitutaka Arai, Yuki Okuyama, Akitoshi Matsubara
  • Patent number: 4868078
    Abstract: An electrophotographic image forming method is disclosed. The method comprises the steps of developing an electrostatic image formed on an image-forming member with a particulate toner for forming a toner image and transferring said toner image onto a receiving material, in which the image-forming member has a surface-improving layer comprised principally of amorphous silicon, and the toner has a weight average particle size within the range of from 1 .mu.m to 6 .mu.m and contains a constituent having a weight average particle size of not more than 5 .mu.m which accounts for not less than 20% by weight of the whole amount of the toner. An electrophotographic copy bearing a high-resolution and high-quality image can be stably obtained by this method.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 19, 1989
    Assignee: Konica Corporation
    Inventors: Eiichi Sakai, Yuki Okuyama, Yoshihide Fujimaki, Toshinori Yamazaki, Satoru Ikeuchi
  • Patent number: 4675268
    Abstract: This invention relates to a magnetic toner (3b) composed mainly of a magnetic material and a binder resin, in which the difference between the softening point and the softening initiation temperature of said magnetic toner (3b) is made 5.degree. C. or more to provide a magnetic toner (3b) which is suitable for pressing transfer, particularly pressing transfer by use of an intermediate transfer member and capable of giving stable running characteristics without causing off-set phenomenon according to a conventional developing system without use of no special developing system and regardless of the photosensitive member employed as well as good image quality on a plain paper.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: June 23, 1987
    Assignee: Konishiroku Photo Industry Co., Ltd.
    Inventors: Ken-ichi Kishi, Kenzi Tuzita, Tuneo Daidoji, Yuki Okuyama, Kiyoshi Kimura