Patents by Inventor Yuugo Matsuura

Yuugo Matsuura 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: 11964496
    Abstract: An optical writing device, and a method of controlling the optical writing device. The optical writing device and the method includes controlling speed of operation of a light deflector based on image magnifying-power information in a sub-scanning direction parallel to a direction in which a surface of a photoconductor moves, and controlling a prescribed write clock frequency such that a number of clock pulses of write light will become a target number of pulses over a period where the write light scans an area within a prescribed distance in a main scanning direction, the target number of pulses being maintained even when the speed of operation of the light deflector is changed in the controlling the speed of operation of the light deflector. The write clock frequency controller maintains the target number of pulses even when the speed of operation of the light deflector is changed by the light-deflector controller.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: April 23, 2024
    Assignee: Ricoh Company, Ltd.
    Inventor: Yuugo Matsuura
  • Publication number: 20220317440
    Abstract: An optical writing device, and a method of controlling the optical writing device. The optical writing device and the method includes controlling speed of operation of a light deflector based on image magnifying-power information in a sub-scanning direction parallel to a direction in which a surface of a photoconductor moves, and controlling a prescribed write clock frequency such that a number of clock pulses of write light will become a target number of pulses over a period where the write light scans an area within a prescribed distance in a main scanning direction, the target number of pulses being maintained even when the speed of operation of the light deflector is changed in the controlling the speed of operation of the light deflector. The write clock frequency controller maintains the target number of pulses even when the speed of operation of the light deflector is changed by the light-deflector controller.
    Type: Application
    Filed: March 3, 2022
    Publication date: October 6, 2022
    Applicant: Ricoh Company, Ltd.
    Inventor: Yuugo Matsuura
  • Patent number: 10089559
    Abstract: A scanner includes: an acquiring unit that acquires determination result information based on a determination result of whether a target dot of a target pixel of a plurality of pixels constituting image data is a first dot or a second dot; a light source control unit that, if the target dot is the first dot, causes a light source to emit a light beam during a corrected lighting time with a light source characteristic time based on a characteristic of the light source being added to a predetermined lighting time that is preliminarily determined with respect to the target dot, and if the target dot is the second dot, causes the light source to emit a light beam during the predetermined lighting time; and a deflecting unit that deflects the light beam in the main scanning direction.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: October 2, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Katsuhiko Maeda, Takuma Nishio, Yuugo Matsuura
  • Patent number: 10073371
    Abstract: An image forming apparatus includes a photoconductor, a light source, an optical scanning device, an image bearer, an image density sensor, an image processing circuit, and a light source driver. The plurality of images are formed with a plurality of light intensities and a plurality of image area rates on the image bearer. The image density sensor detects a plurality of image densities of the plurality of images at a plurality of positions in a main scanning direction. The image processing circuit determines a light intensity correction value to correct an image density of a target image in the main scanning direction based on the plurality of light intensities, image area rates, image densities, and positions, and the image area rate of the target image, and outputs a control signal to adjust a light intensity. The light source driver adjusts the light intensity based on the control signal.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: September 11, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Yuugo Matsuura, Kohei Matsumoto
  • Publication number: 20180059569
    Abstract: An image forming apparatus includes a photoconductor, a light source, an optical scanning device, an image bearer, an image density sensor, an image processing circuit, and a light source driver. The plurality of images are formed with a plurality of light intensities and a plurality of image area rates on the image bearer. The image density sensor detects a plurality of image densities of the plurality of images at a plurality of positions in a main scanning direction. The image processing circuit determines a light intensity correction value to correct an image density of a target image in the main scanning direction based on the plurality of light intensities, image area rates, image densities, and positions, and the image area rate of the target image, and outputs a control signal to adjust a light intensity. The light source driver adjusts the light intensity based on the control signal.
    Type: Application
    Filed: July 21, 2017
    Publication date: March 1, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Yuugo MATSUURA, Kohei MATSUMOTO
  • Publication number: 20160275381
    Abstract: A scanner includes: an acquiring unit that acquires determination result information based on a determination result of whether a target dot of a target pixel of a plurality of pixels constituting image data is a first dot or a second dot; a light source control unit that, if the target dot is the first dot, causes a light source to emit a light beam during a corrected lighting time with a light source characteristic time based on a characteristic of the light source being added to a predetermined lighting time that is preliminarily determined with respect to the target dot, and if the target dot is the second dot, causes the light source to emit a light beam during the predetermined lighting time; and a deflecting unit that deflects the light beam in the main scanning direction.
    Type: Application
    Filed: March 7, 2016
    Publication date: September 22, 2016
    Inventors: Katsuhiko MAEDA, Takuma NISHIO, Yuugo MATSUURA
  • Patent number: 9332655
    Abstract: An electronic circuit having an electronic component mounted on a substrate, a light source device having the electronic circuit, and a method of manufacturing the electronic circuit on which the electronic component is mounted on the substrate are described. The electronic component has a plurality of lead pins to be electrically connected to wirings on the substrate. The substrate is formed with a hole having a larger dimension than a maximum distance between at least two lead pins of the lead pins. The lead pins are inserted into the hole from sides of tips of the lead pins while being bent at a plurality of bending portions, and fixed to the substrate by a solder.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: May 3, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Basho, Katsuhiko Maeda, Masashi Suzuki, Yuugo Matsuura
  • Patent number: 9310708
    Abstract: An optical scanning device includes a light source emitting light to form an image by optical scanning; and a control section generating a control signal, which is for turning on and off the light source, based on an image signal. Further, the control section generates a pulse signal having a predetermined time width when the image signal indicates that the light source is to be turned off.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 12, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Katsuhiko Maeda, Tadashi Shinohara, Yuugo Matsuura
  • Patent number: 9063455
    Abstract: A light-emitting substrate including: a first and second light-emitting devices each including terminals; and a substrate including a first hole and a second hole, the first hole and the second hole respectively having at least one receiving portion, wherein the receiving portion of the first hole receives the terminal of the first light-emitting device, and the receiving portion of the second hole receives the terminal of the second light-emitting device, a first line drawn through a center of the receiving portion of the first hole and a center of the first hole, and a second line drawn through a center of the receiving portion of the second hole and a center of the second hole are not aligned in line.
    Type: Grant
    Filed: August 12, 2013
    Date of Patent: June 23, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Katsuhiko Maeda, Hiroyuki Basho, Masashi Suzuki, Yuugo Matsuura
  • Publication number: 20150054902
    Abstract: An optical scanning device includes a light source emitting light to form an image by optical scanning; and a control section generating a control signal, which is for turning on and off the light source, based on an image signal. Further, the control section generates a pulse signal having a redetermined time width when the image signal indicates that the light source is to be turned off.
    Type: Application
    Filed: July 18, 2014
    Publication date: February 26, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Katsuhiko MAEDA, Tadashi SHINOHARA, Yuugo MATSUURA
  • Publication number: 20140198469
    Abstract: An electronic circuit having an electronic component mounted on a substrate, a light source device having the electronic circuit, and a method of manufacturing the electronic circuit on which the electronic component is mounted on the substrate are described. The electronic component has a plurality of lead pins to be electrically connected to wirings on the substrate. The substrate is formed with a hole having a larger dimension than a maximum distance between at least two lead pins of the lead pins. The lead pins are inserted into the hole from sides of tips of the lead pins while being bent at a plurality of bending portions, and fixed to the substrate by a solder.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 17, 2014
    Inventors: Hiroyuki BASHO, Katsuhiko MAEDA, Masashi SUZUKI, Yuugo MATSUURA
  • Publication number: 20140063168
    Abstract: A light-emitting substrate including: a first and second light-emitting devices each including terminals; and a substrate including a first hole and a second hole, the first hole and the second hole respectively having at least one receiving portion, wherein the receiving portion of the first hole receives the terminal of the first light-emitting device, and the receiving portion of the second hole receives the terminal of the second light-emitting device, a first line drawn through a center of the receiving portion of the first hole and a center of the first hole, and a second line drawn through a center of the receiving portion of the second hole and a center of the second hole are not aligned in line.
    Type: Application
    Filed: August 12, 2013
    Publication date: March 6, 2014
    Inventors: Katsuhiko MAEDA, Hiroyuki Basho, Masashi Suzuki, Yuugo Matsuura