Patents by Inventor Hiroshi Toyama

Hiroshi Toyama 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: 8134125
    Abstract: Problems encountered in the conventional inspection method and the conventional apparatus adopting the method are solved by the present invention using an electron beam by providing a novel inspection method and an inspection apparatus adopting the novel method which are capable of increasing the speed to scan a specimen such as a semiconductor wafer. The inspection novel method provided by the present invention comprises the steps of: generating an electron beam; converging the generated electron beam on a specimen by using an objective lens; scanning the specimen by using the converged electron beam; continuously moving the specimen during scanning; detecting charged particles emanating from the specimen at a location between the specimen and the objective lens and converting the detected charged particles into an electrical signal; storing picture information conveyed by the electrical signal; comparing a picture with another by using the stored picture information; and detecting a defect of the specimen.
    Type: Grant
    Filed: September 16, 2008
    Date of Patent: March 13, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Yuko Iwabuchi, Hideo Todokoro, Hiroyoshi Mori, Mitsugu Sato, Yasutsugu Usami, Mikio Ichihashi, Satoru Fukuhara, Hiroyuki Shinada, Yutaka Kaneko, Katsuya Sugiyama, Atsuko Takafuji, Hiroshi Toyama
  • Patent number: 8120634
    Abstract: The apparatus is adapted to deflect a light beam from a laser light source for each of the color components by means of a deflection mirror surface which oscillates, thereby making the light beam reciprocally scan in a main scanning direction. In this apparatus, however, only a light beam SL which scans in a first direction (+X) of the main scanning direction is irradiated in an effective image region on a photosensitive member, so as to form a latent image thereon. The resultant latent image is developed to form a toner image. Since image formation is performed using only the light beam SL which scans in the first direction (+X), the images may be formed at the consistent density irrespective of the image types. Furthermore, the scanning directions of the light beams SL for all the color components are uniformly defined to be the first direction (+X), so that the toner images of the respective colors may maintain the consistent density.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: February 21, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Yujiro Nomura, Ken Ikuma, Hiroshi Toyama
  • Patent number: 8023070
    Abstract: A backlight device includes a first substrate having optical transparency and having first and second surfaces opposite to each other. An LED thin-film is fixed to the first surface of the first substrate. An anode electrode and a cathode electrode are formed on the LED thin-film. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film to emit light. An anode wiring and a cathode wiring are provided on the first surface of the first substrate. A second substrate has optical transparency, and has first and second surfaces opposite to each other. The second surface of the second substrate faces the first surface of the first substrate. A reflection film is provided on the first surface of the second substrate. A light diffusion plate is provided so as to face the second surface of the first substrate and has a function to diffuse incident light.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 20, 2011
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Toyama, Yukio Nakamura
  • Patent number: 8023847
    Abstract: An image forming apparatus includes an image carrier that is electrically charged and exposed to light to form a latent image that is developed by liquid developer. A first squeezing roller that is held in contact with the image carrier carrying a developed image bears bias voltage Vs1. A second squeezing roller that is held in contact with the image carrier squeezed by the first squeezing roller bears bias voltage Vs2. The image is transferred to a transfer member that is held in contact with the image carrier squeezed by the second squeezing roller. The absolute values of the bias voltages Vs1 and Vs2 have a relationship of |Vs1|>|Vs2|.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: September 20, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Toyama, Ken Ikuma
  • Patent number: 8013952
    Abstract: A backlight device includes a first substrate having optical transparency and having a first surface and a second surface. An LED thin-film is fixed to the first surface of the first substrate. The LED thin-film is formed of epitaxially grown inorganic material layers as a P-N junction device. An anode electrode and a cathode electrode are formed on the LED thin-film. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film. An anode wiring is provided for connecting the anode driver IC and the anode electrode, and a cathode wiring is provided for connecting the cathode driver IC and the cathode electrode. A second substrate has optical transparency and having a function to diffuse incident light. The second substrate is provided so as to face the second surface of the first substrate.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: September 6, 2011
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Toyama, Yukio Nakamura
  • Publication number: 20110150511
    Abstract: The apparatus is adapted to deflect a light beam from a laser light source for each of the color components by means of a deflection mirror surface which oscillates, thereby making the light beam reciprocally scan in a main scanning direction. In this apparatus, however, only a light beam SL which scans in a first direction (+X) of the main scanning direction is irradiated in an effective image region on a photosensitive member, so as to form a latent image thereon. The resultant latent image is developed to form a toner image. Since image formation is performed using only the light beam SL which scans in the first direction (+X), the images may be formed at the consistent density irrespective of the image types. Furthermore, the scanning directions of the light beams SL for all the color components are uniformly defined to be the first direction (+X), so that the toner images of the respective colors may maintain the consistent density.
    Type: Application
    Filed: February 18, 2011
    Publication date: June 23, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yujiro NOMURA, Ken IKUMA, Hiroshi TOYAMA
  • Publication number: 20110140729
    Abstract: An object of the invention is to provide an inspection device which has a function of preventing electric discharge so that an absorbed current is detected more efficiently. In the invention, absorbed current detectors are mounted in a vacuum specimen chamber and capacitance of a signal wire from each probe to corresponding one of the absorbed current detectors is reduced to the order of pF so that even an absorbed current signal with a high frequency of tens of kHz or higher can be detected. Moreover, signal selectors are operated by a signal selection controller so that signal lines of a semiconductor parameters analyzer are electrically connected to the probes brought into contact with a sample. Accordingly, electrical characteristics of the sample can be measured without limitation of signal paths connected to the probes to transmission of an absorbed current. In addition, a resistance for slow leakage of electric charge is provided in each probe stage or a sample stage.
    Type: Application
    Filed: July 29, 2009
    Publication date: June 16, 2011
    Applicant: Hitachi High-Technologies Corporation
    Inventors: Mitsuhiro Nakamura, Hiroshi Toyama, Yasuhiko Nara, Katsuo Oki, Tomoharu Obuki, Masahiro Sasajima
  • Patent number: 7944463
    Abstract: An image forming apparatus, includes: a latent image carrier whose surface includes an effective image region spanning across a predetermined width in a main scanning direction and is driven in a sub scanning direction approximately orthogonal to the main scanning direction; a latent image former which has a light source and a deflection mirror oscillating, and deflects a light beam from the light source using the deflection mirror so as to scan the effective image region with the deflected light beam; and a scanning mode controller which switches selectively between a single-side scanning mode and a double-side scanning mode, the single-side scanning mode being a mode in which the light beam is scanned only in a first direction included in the main scanning direction, the double-side scanning mode being a mode in which the light beam is scanned in both the first direction and a second direction opposite to the first direction, wherein a condition to form latent images on the latent image carrier in the singl
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: May 17, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Toyama, Yujiro Nomura, Ken Ikuma
  • Publication number: 20110103814
    Abstract: The image forming apparatus includes a first latent image carrier; a first developing member develops the latent image by a first liquid developer; a second latent image carrier; a second developing member develops the latent image by a second liquid developer; a transfer medium that forms first and second nip portion; a detecting unit; and a control unit, that, when the first image is a first image density, detect the first image passed through the second nip portion formed by the transfer medium and the second latent image carrier while the second developing member contacts with the second latent image carrier, and when the first image is a second image density higher than the first image density, detect the first image passed through the second nip portion formed by the transfer medium and the second latent image carrier while the second developing member separates form the second latent image carrier.
    Type: Application
    Filed: September 28, 2010
    Publication date: May 5, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroshi TOYAMA, Ken IKUMA
  • Patent number: 7920156
    Abstract: The apparatus is adapted to deflect a light beam from a laser light source for each of the color components by means of a deflection mirror surface which oscillates, thereby making the light beam reciprocally scan in a main scanning direction. In this apparatus, however, only a light beam SL which scans in a first direction (+X) of the main scanning direction is irradiated in an effective image region on a photosensitive member, so as to form a latent image thereon. The resultant latent image is developed to form a toner image. Since image formation is performed using only the light beam SL which scans in the first direction (+X), the images may be formed at the consistent density irrespective of the image types. Furthermore, the scanning directions of the light beams SL for all the color components are uniformly defined to be the first direction (+X), so that the toner images of the respective colors may maintain the consistent density.
    Type: Grant
    Filed: October 3, 2008
    Date of Patent: April 5, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yujiro Nomura, Ken Ikuma, Hiroshi Toyama
  • Patent number: 7884374
    Abstract: An LED backlight device includes a substrate having an optical transparency and an LED thin-film layered structure fixed to a first surface of the substrate. The LED thin-film layered structure is formed of epitaxially grown inorganic material layers as a P-N junction device. An anode electrode and a cathode electrode are formed on the LED thin-film layered structure. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film layered structure. A wiring structure electrically connects the anode driver IC and the anode electrode of the LED thin-film layered structure and electrically connects the cathode driver IC and the cathode electrode of the LED thin-film layered structure. A phosphor is formed on the second surface of the substrate opposite to the first surface.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: February 8, 2011
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Toyama, Yukio Nakamura
  • Patent number: 7884371
    Abstract: A backlight device includes a first substrate, and an LED thin-film layered structure (epitaxially grown inorganic material layers) fixed to a surface of the first substrate. An anode electrode and a cathode electrode are formed on the LED thin-film layered structure. An anode driver IC and a cathode driver IC are provided for driving the LED thin-film layered structure. A wiring structure electrically connects the anode driver IC and the anode electrode of the LED thin-film layered structure, and electrically connects the cathode driver IC and the cathode electrode of the LED thin-film layered structure. A second substrate has an optical transparency and is disposed to face the surface of the first substrate on which the LED thin-film layered structure is formed. A phosphor is formed on a surface of the second substrate facing the first substrate and is disposed on a position corresponding to the LED thin-film layered structure.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: February 8, 2011
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Toyama, Yukio Nakamura
  • Patent number: 7863614
    Abstract: An LED backlight device includes a first substrate having optical transparency and having first and second surfaces. An LED thin-film layered structure is fixed to the first surface of the first substrate, and is formed of epitaxially grown inorganic material layers as a P-N junction device. An anode electrode of the LED thin-film layered structure is connected to an anode driver IC via an anode wiring. A cathode electrode of the LED thin-film layered structure is connected to a cathode driver IC via a cathode wiring. A phosphor is provided on the second surface of the first substrate. The LED backlight device further includes a second substrate having optical transparency and having first and second surfaces. The first surface of the second substrate faces the first surface of the first substrate. A reflection layer is provided on the second surface of the second substrate.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: January 4, 2011
    Assignee: Oki Data Corporation
    Inventors: Hiroshi Toyama, Yukio Nakamura
  • Patent number: 7834897
    Abstract: An optical scanning apparatus in which an exposing signal is generated from pattern data indicating a position to be exposed by a light beam on a surface-to-be-scanned. A corrected exposing signal is generated by varying the width of pulses of the exposing signal in accordance with a distance between an exposing area corresponding to the pulse and an optical axis of the scanning optical system. The light beam is emitted and modulated by the corrected exposing signal. The pulse width and/or the light quantity of the light beam is/are varied in accordance with the distance between the exposing area and the optical axis of the scanning optical system.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: November 16, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Toyama, Yujiro Nomura, Ken Ikuma
  • Patent number: 7815276
    Abstract: An image forming method using an image forming apparatus including: a latent image carrier whose surface is driven in a sub scanning direction; a deflector which scans a beam spot reciprocally in a main scanning direction substantially perpendicular to the sub scanning direction on the surface of the latent image carrier in the use of an oscillating deflect mirror so as to form spot latent images each of which formed on a pixel; developer which develops each of the spot latent images as a pixel-dot, the method includes of: halftoning for a tone reproduction in which a halftone-dot constituted by the pixel-dot(s) is formed on a cell consisting plural pixels according to a fattening type threshold matrix, wherein a plurality of cells are contiguously arranged in the main scanning direction so as to form a plurality of contiguous locations at each of which the cells adjoin mutually in the main scanning direction, each cell includes a larger-than-four even number of pixels in the sub scanning direction, and the c
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: October 19, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Toyama, Yujiro Nomura, Ken Ikuma
  • Publication number: 20100226670
    Abstract: An image forming apparatus includes a first latent image carrier that forms a first latent image, a first charging unit that charges the first latent image carrier, and a first exposure unit that exposes the first latent image carrier to light, forming the first latent image. A first developing unit develops the first latent image with a first liquid developer. A second latent image carrier forms a second latent image. A second charging unit charges the second latent image carrier, which is exposed by a second exposure unit to light, forming the second latent image. A second developing unit develops the second latent image with a second liquid developer. Developed images of the first and second latent image carriers are transferred by a transfer member. A light amount controlling unit adjusts an exposed light amount of the first or the second exposure unit according to image information.
    Type: Application
    Filed: February 10, 2010
    Publication date: September 9, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi TOYAMA, Ken IKUMA
  • Publication number: 20100188720
    Abstract: A light source apparatus emits light image information. A reflective layer is formed on a planarization film formed on a metal substrate. LED thin films are arranged in a matrix having columns extending in first directions and rows extending in second directions perpendicular to the first directions, the LED thin films being bonded to the reflective layer by means of intermolecular force. First wires are connected to first electrodes of the LED thin films. Second wires are connected to second electrodes of the LED thin films. A first driver circuit selectively electrically drives the LED thin films, arranged in the rows, via the plurality of first wires. A second driver circuit selectively electrically drives the LED thin films, arranged in the rows, via the plurality of second wires.
    Type: Application
    Filed: January 25, 2010
    Publication date: July 29, 2010
    Applicant: OKI DATA CORPORATION
    Inventors: Yukio Nakamura, Hiroshi Toyama
  • Publication number: 20100116986
    Abstract: An object of the present invention is to obtain a clear absorbed current image without involving the difference in gain of amplifier between inputs, from absorbed currents detected by using a plurality of probes and to improve measurement efficiency. In the present invention, a plurality of probes are brought in contact with a specimen. While irradiating the specimen with an electron beam, currents flowing in the probes are measured. Signals from at least two probes are input to a differential amplifier. An output of the differential amplifier is amplified. On the basis of the amplified output and scanning information of the electron beam, an absorbed current image is generated. According to the invention, a clear absorbed current image can be obtained without involving the difference in gain of amplifier between inputs. Thus, measurement efficiency in a failure analysis of a semiconductor device can be improved.
    Type: Application
    Filed: January 21, 2010
    Publication date: May 13, 2010
    Applicant: Hitachi High-Technologies Corporation
    Inventors: Tomoharu Obuki, Hiroshi Toyama, Yasuhiro Mitsui, Munetoshi Fukui, Yasuhiko Nara, Tohru Ando, Katsuo Ooki, Tsutomu Saito, Masaaki Komori
  • Publication number: 20100067950
    Abstract: An image forming apparatus includes: a latent image carrier; an exposure unit which forms a latent image on the latent image carrier; a developing unit which develops the latent image formed on the latent image carrier by the exposure unit using liquid developer; a squeeze roller which contacts the latent image carrier, and applies bias voltage to the latent image carrier after development by the developing unit; an electrification reducing light source which supplies light to the latent image carrier to which bias is applied by the squeeze roller; a transfer member which contacts the latent image carrier and receives the image transferred from the latent image carrier; and a reflection preventing member disposed between the transfer member and the electrification reducing light source.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 18, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroshi TOYAMA, Koichi KAMIJO, Ken IKUMA
  • Publication number: 20100046990
    Abstract: An image forming apparatus includes: a photoconductor drum; a transfer belt wound around the photoconductor drum and configured to move in a first direction; and a transfer member configured to come into abutment with the photoconductor drum at an abutment position via the transfer belt, wherein the transfer belt comes into contact with the photoconductor drum at a first position and comes out of contact with the photoconductor drum at a second position, and a peripheral surface length of the photoconductor drum between the abutment position and the second position is larger than a peripheral surface length of the photoconductor drum between the first position and the abutment position.
    Type: Application
    Filed: August 18, 2009
    Publication date: February 25, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koichi KAMIJO, Satoshi CHIBA, Hiroshi TOYAMA