Patents by Inventor Osamu Wada

Osamu Wada 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: 20110008724
    Abstract: A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y??1.54x+5.93 ??(1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.
    Type: Application
    Filed: July 13, 2010
    Publication date: January 13, 2011
    Inventors: Nobuyuki YOSHIOKA, Takanori Kamoto, Osamu Wada, Tadashi Iwamatsu
  • Publication number: 20110001688
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Application
    Filed: September 17, 2010
    Publication date: January 6, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Osamu WADA, Junichi NAKAMURA
  • Publication number: 20100290303
    Abstract: A semiconductor device includes a first terminal, a second terminal, and a fuse link that connects between the first terminal and the second terminal. The first terminal and the fuse link have a polysilicon layer doped with an impurity ion and a layer containing a metal element laminated on the polysilicon layer. The second terminal has a polysilicon layer not doped with an impurity ion and a layer containing a metal element laminated on the polysilicon layer, in at least a part of an end side connected to the fuse link.
    Type: Application
    Filed: February 18, 2010
    Publication date: November 18, 2010
    Inventors: Osamu Wada, Toshimasa Namekawa
  • Publication number: 20100279221
    Abstract: A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm3. The resin coating layer contains cross-linked fine resin particles. Additionally, the resin-coated carrier is configured such that a volume average particle size of the cross-linked fine resin particles contained in the resin coating layer and an area average diameter of the surface fine pores satisfy a predetermined relational expression.
    Type: Application
    Filed: April 28, 2010
    Publication date: November 4, 2010
    Inventors: Osamu Wada, Takanori Kamoto, Nobuyuki Yoshioka, Ayae Nagaoka, Tadashi Iwamatsu
  • Patent number: 7821476
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: October 26, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Wada, Junichi Nakamura
  • Publication number: 20100248116
    Abstract: A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 ?m. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 30, 2010
    Inventors: Takanori KAMOTO, Takayuki Yamanaka, Osamu Wada, Tadashi Iwamatsu, Nobuyuki Yoshioka
  • Publication number: 20100183340
    Abstract: A resin coated carrier is provided that can stably charge a toner having added thereto an external additive having a large particle size over a long period of time and can prevent blocking of a developer. The resin coated carrier satisfies the following formula (1): log(Mb/Ma)>2??(1) in which Ma is a weight average molecular weight of a silicone resin having the minimum weight average molecular weight, contained in a resin coating layer, and Mb is a weight average molecular weight of a silicone resin having the maximum weight average molecular weight, and the following formula (2) is satisfied: 0.5??log(A/B)?2.5??(2) in which A is a volume resistance (?/cm) under electric field of 1,000 V/cm obtained by conducting a stirring test, and B is a volume resistance (?/cm) under electric field of 1,000 V/cm before the stirring test.
    Type: Application
    Filed: January 21, 2010
    Publication date: July 22, 2010
    Inventors: Osamu Wada, Tadashi Iwamatsu, Takanori Kamoto, Nobuyuki Yoshioka, Natsuki Matsuura, Nobuhiro Seki, Masatomo Hayashi
  • Patent number: 7733713
    Abstract: A memory cell array includes a plurality of non-volatile semiconductor memory elements, each memory element storing data in a non-volatile manner. A shift register stores data read from the semiconductor memory element and sequentially transfers the data outside, the shift register also stores data transferred from outside and stores the data in the semiconductor memory element. A syndrome generation circuit is connected to an output terminal of the shift register, the syndrome generation circuit generating syndrome of data output from the output terminal. An error-correction circuit uses the data and the syndrome to correct an error of the data.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: June 8, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Nakano, Toshimasa Namekawa, Hiroshi Ito, Osamu Wada, Atsushi Nakayama
  • Publication number: 20100097298
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Application
    Filed: December 22, 2009
    Publication date: April 22, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Osamu Wada, Junichi Nakamura
  • Patent number: 7663572
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Grant
    Filed: February 10, 2009
    Date of Patent: February 16, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Wada, Junichi Nakamura
  • Publication number: 20100003614
    Abstract: The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5??log {(A/C)/(B/C)}?2.5 ??(1) wherein A represents a volume resistance value (Q/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value (?/cm) of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (?/cm) of the carrier core in an electric field of 1000 V/cm.
    Type: Application
    Filed: July 1, 2009
    Publication date: January 7, 2010
    Inventors: Osamu Wada, Takanori Kamoto, Tadashi Iwamatsu, Nobuyuki Yoshioka, Hiroyuki Hirakawa, Yoshinori Mutoh, Takashi Hara, Hirofumi Kanda, Yoshio Ichii
  • Patent number: 7613062
    Abstract: A semiconductor memory device includes a memory element, a first data line and a second data line, a first selection transistor, and a second selection transistor. The memory element includes a semiconductor element of MOS structure in which data is programmed when an insulating film provided in the semiconductor element is broken down by application of a voltage thereto. The first and second data lines are connected to a sense amplifier. The first selection transistor is configured to connect the memory element to the first data line in order to program data in the memory element. The second selection transistor is configured to connect the memory element to the second data line in order to program data in the memory element and detect the data programmed in the memory element. The second selection transistor has a smaller gate-electrode width smaller than the first selection transistor.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: November 3, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroaki Nakano, Toshimasa Namekawa, Hiroshi Ito, Osamu Wada, Atsushi Nakayama
  • Patent number: 7599206
    Abstract: A non-volatile semiconductor storage device includes: one or more memory cells including anti-fuse elements capable of writing data by breaking down a gate insulation film of a MOS transistor with a high voltage; a sense node having its one end connected to each of the anti-fuse elements; a sense amplifier comparing the potential of the sense node with the reference potential and amplifying the difference therebetween, the sense amplifier being activated according to a sense-amplifier activation signal; an initialization circuit initializing the potential of the sense node according to an initialization signal; a control circuit outputting the initialization signal at a predetermined timing after input of an external signal input from the outside and outputting a first activation signal to activate the sense amplifier at a predetermined timing after input of the external signal; and a switching circuit outputting the first activation signal as the sense-amplifier activation signal when a normal data read oper
    Type: Grant
    Filed: February 15, 2008
    Date of Patent: October 6, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Atsushi Nakayama, Toshimasa Namekawa, Hiroaki Nakano, Hiroshi Ito, Osamu Wada
  • Publication number: 20090174724
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Application
    Filed: February 10, 2009
    Publication date: July 9, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Osamu Wada, Junichi Nakamura
  • Patent number: 7557400
    Abstract: A semiconductor device has a MOS capacitor in which a drain region and a source region of a MOS structure are commonly connected, and a capacitance is formed between the commonly connected drain region/source region and a gate electrode of the MOS structure; and a wiring capacitor which has a first comb-shaped wiring that is formed on said MOS capacitor through an interlayer insulating film, is connected to the gate electrode of said MOS capacitor, and has projecting portions projecting like comb teeth and a second comb-shaped wiring that is formed on said MOS capacitor through the interlayer insulating film, is arranged across an inter-line insulating film from the first comb-shaped wiring, is connected to the drain region and source region, and has projecting portions projecting like comb teeth, wherein the projecting portions of the second comb-shaped wiring are arranged alternately with the projecting portions of the first comb-shaped wiring and arranged perpendicularly to a channel direction connecting t
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: July 7, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Osamu Wada, Hiroaki Nakano, Hiroshi Ito, Toshimasa Namekawa, Atsushi Nakayama
  • Patent number: 7542055
    Abstract: An image display system that performs grayscale correction in accordance with the on-site environment, to display an image, is provided with: a calibration signal generation section (150) that generates calibration signals for displaying each of first and second grayscale correction images having two grayscale values of a single color, a color-light sensor (60) that measures luminance values under an ideal environment and the on-site environment for each of the first and the second grayscale correction images projected on a screen, a 1D-LUT generation section (140) that generates a 1D-LUT based on the luminance values measured by the color-light sensor (60), and a grayscale correction section (170) that stores the 1D-LUT generated by the 1D-LUT generation section (140) and performs grayscale correction.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: June 2, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Matsuda, Osamu Wada
  • Patent number: 7537350
    Abstract: A projector including: an image projection section for projecting an image onto a rectangular screen through a liquid crystal panel; a position adjustment information generation section for generating position adjustment information based on position adjustment of the image made by a user; a correction information generation section for generating position correction information for correcting positions of four corners of the image on the screen based on the position adjustment information; and a correction section for correcting image information for projecting the image based on the position correction information.
    Type: Grant
    Filed: February 7, 2005
    Date of Patent: May 26, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Masanobu Kobayashi, Osamu Wada
  • Patent number: 7524070
    Abstract: A projector includes a projection angle deriving section which generates projection angle information indicating an angle formed by a projection target area and projection light projected onto the projection target area; a projection distance deriving section which generates projection distance information indicating a distance from an aim area in the projection target area to a projection section which projects the projection light; a control information generation section which generates direction control information for aligning a projection direction of the projection light with a normal direction of the projection target area based on the projection angle information, and generates projection section control information for controlling the projection section so that the projection light is projected onto the aim area based on the projection distance information; a pedestal driver section which drives a pedestal which adjusts the projection direction of the projection light based on the direction control
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: April 28, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Hideki Matsuda, Masanobu Kobayashi, Osamu Wada
  • Patent number: 7508358
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: March 24, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Wada, Junichi Nakamura
  • Patent number: 7508357
    Abstract: The color display device includes a colored light generation unit for repetitively generating a plurality of colored lights in a time sequence with a predetermined frequency, and an image generation unit for processing said plurality of colored lights, so as to generate an image corresponding to each of the plurality of colored lights generated in a time sequence. The said predetermined frequency is 180 Hz or more.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: March 24, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Wada, Junichi Nakamura