Patents by Inventor Seigo Umeda

Seigo Umeda 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).

  • Publication number: 20200033508
    Abstract: An optical thin film formed by laminating, from the substrate side, an interlayer, a silver-containing metal layer that contains silver, and a dielectric layer, in which an anchor metal diffusion control layer provided between the interlayer and the silver-containing metal layer, an anchor region which includes an oxide of the anchor metal and has a surface energy that is less than the surface energy of the silver-containing metal layer and larger than the surface energy of the anchor metal diffusion control layer is provided between the anchor metal diffusion control layer and the silver-containing metal layer, a cap region which includes an oxide of the anchor metal is provided between the silver-containing metal layer and the dielectric layer, and the total film thickness of the silver-containing metal layer, the anchor region, and the cap region is 6 nm or less.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 30, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Shinichiro SONODA, Tatsuya YOSHIHIRO, Kenichi UMEDA, Yuichiro ITAI, Seigo Nakamura
  • Publication number: 20200002804
    Abstract: This method for producing a transparent optical film includes a film formation step of forming a silver layer and a high standard electrode potential metal layer so as to be laminated on a substrate, the film formation step including a silver deposition step of forming the silver layer, at a thickness of 6 nm or less by vacuum deposition, and a high standard electrode potential metal deposition step of forming the high standard electrode potential metal layer formed of a high standard electrode potential metal having a higher standard electrode potential than that of silver by vacuum deposition, and an alloying step of forming a silver alloy layer by diffusing the high standard electrode potential metal within the silver layer by performing a heating treatment at a temperature of 50° C. or higher and 400° C. or lower.
    Type: Application
    Filed: September 12, 2019
    Publication date: January 2, 2020
    Applicant: FUJIFILM Corporation
    Inventors: Seigo NAKAMURA, Kenichi UMEDA, Yuichiro ITAI, Shinichiro SONODA
  • Publication number: 20190196064
    Abstract: Provided is an antireflection film that is formed by laminating an interlayer, a silver-containing metal layer containing silver, and a dielectric layer, in this order, on a substrate, in which the interlayer is a multilayer film having two or more layers, in which a layer of high refractive index having a relatively high refractive index and a layer of low refractive index having a relatively low refractive index are alternately laminated, and the dielectric layer has a surface to be exposed to air and is a multilayer film having two or more layers including an oxide layer and a fluorocarbon layer which is a self-assembled film that is formed by a silane coupling reaction to the oxide layer in this order.
    Type: Application
    Filed: February 28, 2019
    Publication date: June 27, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Seigo NAKAMURA, Kenichi UMEDA, Yuichiro ITAI, Shinichiro SONODA
  • Publication number: 20190170908
    Abstract: An antireflection film is formed by laminating an interlayer, a silver-containing metal layer containing silver, and a dielectric layer in this order from the substrate, an anchor region including an oxide of an anchor metal is provided between the silver-containing metal layer and the interlayer, a cap region including an oxide of the anchor metal included in the anchor region is provided between the silver-containing metal layer and the dielectric layer, a crystal grain size obtained by X-ray diffraction measurement in the silver-containing metal layer is less than 6.8 nm, and the anchor metal has a surface energy less than a surface energy of silver and greater than a surface energy of a layer of the interlayer closest to the silver-containing metal layer.
    Type: Application
    Filed: February 6, 2019
    Publication date: June 6, 2019
    Applicant: FUJIFILM Corporation
    Inventors: Kenichi UMEDA, Seigo NAKAMURA, Yuichiro ITAI, Hideki YASUDA
  • Patent number: 6089563
    Abstract: The invention provides a paper supply apparatus for an image reading apparatus, an image reading apparatus with a paper supply apparatus and a paper supply apparatus which can be used suitably with an image scanner wherein a large amount of paper sheets can be taken out one by one with certainty and read successively and rapidly. The paper supply apparatus successively supplies paper sheets accommodated therein to a paper transport mechanism along which an optical image reading mechanism is disposed, and comprises a paper supply hopper, a paper supply roller located above the paper supply hopper for forwarding the paper sheets accommodated in the paper supply hopper, a paper supply roller driving mechanism for rotating the paper supply roller, and a paper separation mechanism for preventing two or more paper sheets forwarded by the paper supply roller from being sent to the paper transport mechanism.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: July 18, 2000
    Assignee: Fujitsu, Ltd.
    Inventors: Yoshihiro Takashimizu, Toshiaki Anzai, Seigo Umeda, Hiroyuki Maruyama, Tadayoshi Nakata, Toshiaki Kumagai, Rika Nishiwaki
  • Patent number: 5956161
    Abstract: An improved image reading apparatus suitable for use with an image scanner which can read a large number of paper sheets successively and rapidly and cope with various paper sizes from a small size to a large size. The image reading apparatus includes a paper supply mechanism, a paper transport mechanism, an optical image reading mechanism for optically reading information on a paper sheet being transported by the paper transport mechanism, and a paper stacking mechanism.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: September 21, 1999
    Assignee: Fujitsu Limited
    Inventors: Yoshihiro Takashimizu, Masahiro Yoshida, Toshiaki Anzai, Hirotoshi Kakegawa, Noriaki Yamazaki, Toshio Saito, Hiroyuki Maruyama, Fumiaki Harada, Seigo Umeda, Yoshio Tabata
  • Patent number: 5715071
    Abstract: The invention provides a paper supply apparatus for an image reading apparatus, an image reading apparatus with a paper supply apparatus and a paper supply apparatus which can be used suitably with an image scanner wherein a large amount of paper sheets can be taken out one by one with certainty and read successively and rapidly. The paper supply apparatus successively supplies paper sheets accommodated therein to a paper transport mechanism along which an optical image reading mechanism is disposed, and comprises a paper supply hopper, a paper supply roller located above the paper supply hopper for forwarding the paper sheets accommodated in the paper supply hopper, a paper supply roller driving mechanism for rotating the paper supply roller, and a paper separation mechanism for preventing two or more paper sheets forwarded by the paper supply roller from being sent to the paper transport mechanism.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: February 3, 1998
    Assignee: Fujitsu Limited
    Inventors: Yoshihiro Takashimizu, Toshiaki Anzai, Seigo Umeda, Hiroyuki Maruyama, Tadayoshi Nakata, Toshiaki Kumagai, Rika Nishiwaki