Patents by Inventor Kohei Matsumoto

Kohei Matsumoto 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: 20200403019
    Abstract: A semiconductor apparatus according to the present invention includes: a semiconductor component including a cell array and a plurality of wirings; and a semiconductor component including a plurality of pads connected to the semiconductor component including the cell array. A first row pad connected to a row wiring connected to a first cell and a second cell, a second row pad connected to a row wiring connected to a third cell and a fourth cell, and a column pad connected to a column wiring connected to the first cell and the third cell are arranged such that a straight line connecting the first row pad and the column pad crosses a straight line connecting the second row pad and the column pad.
    Type: Application
    Filed: June 18, 2020
    Publication date: December 24, 2020
    Inventors: Kohei Matsumoto, Hideo Kobayashi, Daisuke Yoshida
  • Patent number: 10855940
    Abstract: An imaging device includes a first chip on which a plurality of first blocks is arranged in a matrix, and a second chip which includes a first block scanning circuit and a second block scanning circuit. The second chip includes a selection circuit configured to select driving timing given to a plurality of pixels, based on a signal output from the first block scanning circuit and a signal output from the second block scanning circuit. A second block includes a circuit other than the selection circuit.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 1, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kohei Matsumoto, Hirofumi Totsuka, Katsuhito Sakurai, Kohichi Nakamura
  • Publication number: 20200014871
    Abstract: An imaging device including an operation signal generation circuit of reduced circuit scale is provided. The imaging device includes a selection circuit configured to output a pixel transfer pulse signal to be input to a gate of a transfer transistor of a pixel based on a vertical block control signal, a horizontal block control signal, and a row transfer pulse signal.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 9, 2020
    Inventors: Kohei Matsumoto, Hirofumi Totsuka, Katsuhito Sakurai, Kohichi Nakamura
  • Publication number: 20190293319
    Abstract: A heat exchange ventilator includes: a partition wall that has a bypass opening allowing an exhaust air duct upstream of a total heat exchanger to communicate with the exhaust air duct between the total heat exchanger and a humidifier, and separates the exhaust air duct upstream of the total heat exchanger and a supply air duct downstream of the total heat exchanger; a bypass damper that opens and closes the bypass opening; and a controller that performs control to open the bypass opening by the bypass damper at a first time, and close the bypass opening by the bypass damper at a second time.
    Type: Application
    Filed: December 13, 2016
    Publication date: September 26, 2019
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kenta Okeya, Kohei Matsumoto
  • Publication number: 20190262760
    Abstract: A wet abatement system which can suppress the accumulation of foreign matters in a treatment gas line is proposed. There is provided a wet abatement system for detoxifying treatment gas by bringing the treatment gas into contact with liquid. The wet abatement system includes an inlet casing having an inlet port from which the treatment gas is let in and an outlet port provided below the inlet port and through which the treatment gas flows, and a liquid film forming device provided between the inlet port and the outlet port and configured to form a liquid film on an inner wall surface of the inlet casing. A heater configured to heat the inlet casing is embedded in an interior of a wall portion of the inlet casing, the wall portion constituting a portion situated above the liquid film forming device.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 29, 2019
    Inventors: Takanori INADA, Kazumasa HOSOTANI, Kazutomo MIYAZAKI, Kohei MATSUMOTO
  • Patent number: 10365601
    Abstract: An image forming apparatus includes an image forming device, an image density detector, and a processor. The processor controls the image forming device to form a first test toner image, and controls the image density detector to detect an image density at the plurality of positions of the first test toner image. The processor adjusts an image forming condition so that the image density detected at each of the plurality of positions becomes a target image density, controls the image forming device to form a second test toner image based on the adjusted image forming condition, controls the image density detector to detect an image density at the plurality of positions of the second test toner image, determines whether a streak exists in the second test toner image based on the detected image densities, and executes a countermeasure to prevent an occurrence of the streak.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: July 30, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Keita Sone, Akira Yoshida, Natsumi Matsue, Kazuaki Kamihara, Yuuichiroh Uematsu, Kohei Matsumoto, Taku Kumiya
  • Publication number: 20190169522
    Abstract: The present disclosure is related to provide a lubricating grease composition having a high static friction coefficient while maintaining excellent low-temperature torque characteristics, high-temperature shear stability, and high-temperature oil separation characteristics. A lubricating grease composition of the present disclosure contains a base oil, a thickener, and a solid lubricant, wherein the solid lubricant is calcium carbonate, the amount of the calcium carbonate blended is 1 to 60% by weight based on the total weight of the lubricating grease composition, the calcium carbonate has an average particle diameter of 0.1 to 30 ?m, the base oil has a kinematic viscosity of 18 to 300 mm2/s at 40° C., and the lubricating grease composition has a worked penetration of 240 to 320.
    Type: Application
    Filed: February 7, 2019
    Publication date: June 6, 2019
    Inventors: Wataru SAWAGUCHI, Kohei MATSUMOTO
  • Publication number: 20190103427
    Abstract: An imaging device includes a first chip on which a plurality of first blocks is arranged in a matrix, and a second chip which includes a first block scanning circuit and a second block scanning circuit. The second chip includes a selection circuit configured to select driving timing given to a plurality of pixels, based on a signal output from the first block scanning circuit and a signal output from the second block scanning circuit. A second block includes a circuit other than the selection circuit.
    Type: Application
    Filed: September 27, 2018
    Publication date: April 4, 2019
    Inventors: Kohei Matsumoto, Hirofumi Totsuka, Katsuhito Sakurai, Kohichi Nakamura
  • Patent number: 10241462
    Abstract: An electrophotographic image forming apparatus includes a latent image bearer to rotate and bear a latent image, a charging device to charge the a latent image bearer, a developing device to develop the latent image with developer including toner and use a developing voltage including an AC component, and a lubricant applicator to apply lubricant onto a surface of the latent image bearer. An amount of the lubricant applied by the lubricant applicator onto the latent image bearer per centimeter in an axial direction of the latent image bearer is equal to or greater than 0.845 mg for a running distance of 1.0 kilometer of the latent image bearer, and a difference between a largest value and a smallest value of the developing voltage is in a range of 200 V to 400 V.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: March 26, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayoshi Nakayama, Takuma Higa, Masaki Sukesako, Masashi Tachi, Kazuaki Kamihara, Yuichi Aizawa, Tomohide Takenaka, Kohei Matsumoto
  • Patent number: 10094587
    Abstract: A heat-exchange ventilation device includes: a heater connection terminal to which an external connection heater is connected; a temperature sensor that measures a temperature of a supply air flow passing through an air supply passage; and a control unit that controls operations of an air supply fan and an air exhaust fan and turning-on and turning-off of the external connection heater based on a measurement result of the temperature sensor. The external connection heater is installed in an outdoor air-supply duct and heats a supply air flow flowing through the air supply passage into a heat exchanger. The air supply fan is operable at a plurality of intensities, and the control unit prohibits a state in which the air supply fan is operated at an intensity lower than an intensity set in advance and the external connection heater is turned on.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: October 9, 2018
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Kohei Hasegawa, Kohei Matsumoto, Masashi Ashino, Fumio Saito
  • 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
  • Patent number: 10040283
    Abstract: A semiconductor device is provided. The device comprises: a first transistor that includes a first primary terminal, a second primary terminal and a first control terminal; a second transistor that includes a third primary terminal, a fourth primary terminal and a second control terminal; and a resistive element. The first and third primary terminal are connected to a first voltage line. The second primary terminal and one terminal of the resistive element are connected to a second voltage line. The first and second control terminal, the fourth primary terminal and the other terminal of the resistive element are connected to a node. A potential change in the third primary terminal is transmitted to the first control terminal by capacitive coupling between the third primary terminal and the node, turning on the first transistor.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: August 7, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Matsumoto, Kazunari Fujii
  • Patent number: 10005278
    Abstract: A semiconductor device is provided. The device comprises: a first transistor that includes a first primary terminal, a second primary terminal and a first control terminal; a second transistor that includes a third primary terminal, a fourth primary terminal and a second control terminal; and a resistive element. The first and third primary terminal are connected to a first voltage line. The second primary terminal and one terminal of the resistive element are connected to a second voltage line. The first and second control terminal, the fourth primary terminal and the other terminal of the resistive element are connected to a node. A potential change in the third primary terminal is transmitted to the first control terminal by capacitive coupling between the third primary terminal and the node, turning on the first transistor.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: June 26, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kohei Matsumoto, Kazunari Fujii
  • Publication number: 20180150010
    Abstract: An image forming apparatus includes an image forming device, an image density detector, and a processor. The processor controls the image forming device to form a first test toner image, and controls the image density detector to detect an image density at the plurality of positions of the first test toner image. The processor adjusts an image forming condition so that the image density detected at each of the plurality of positions becomes a target image density, controls the image forming device to form a second test toner image based on the adjusted image forming condition, controls the image density detector to detect an image density at the plurality of positions of the second test toner image, determines whether a streak exists in the second test toner image based on the detected image densities, and executes a countermeasure to prevent an occurrence of the streak.
    Type: Application
    Filed: October 25, 2017
    Publication date: May 31, 2018
    Inventors: Keita SONE, Akira Yoshida, Natsumi Matsue, Kazuaki Kamihara, Yuuichiroh Uematsu, Kohei Matsumoto, Taku Kumiya
  • Publication number: 20180143581
    Abstract: An electrophotographic image forming apparatus includes a latent image bearer to rotate and bear a latent image, a charging device to charge the a latent image bearer, a developing device to develop the latent image with developer including toner and use a developing voltage including an AC component, and a lubricant applicator to apply lubricant onto a surface of the latent image bearer. An amount of the lubricant applied by the lubricant applicator onto the latent image bearer per centimeter in an axial direction of the latent image bearer is equal to or greater than 0.845 mg for a running distance of 1.0 kilometer of the latent image bearer, and a difference between a largest value and a smallest value of the developing voltage is in a range of 200 V to 400 V.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 24, 2018
    Inventors: Masayoshi NAKAYAMA, Takuma HIGA, Masaki SUKESAKO, Masashi TACHI, Kazuaki KAMIHARA, Yuichi AIZAWA, Tomohide TAKENAKA, 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: 20170291415
    Abstract: A semiconductor device is provided. The device comprises: a first transistor that includes a first primary terminal, a second primary terminal and a first control terminal; a second transistor that includes a third primary terminal, a fourth primary terminal and a second control terminal; and a resistive element. The first and third primary terminal are connected to a first voltage line. The second primary terminal and one terminal of the resistive element are connected to a second voltage line. The first and second control terminal, the fourth primary terminal and the other terminal of the resistive element are connected to a node. A potential change in the third primary terminal is transmitted to the first control terminal by capacitive coupling between the third primary terminal and the node, turning on the first transistor.
    Type: Application
    Filed: March 16, 2017
    Publication date: October 12, 2017
    Inventors: Kohei Matsumoto, Kazunari Fujii
  • Publication number: 20170219237
    Abstract: A heat-exchange ventilation device includes: a heater connection terminal to which an external connection heater is connected; a temperature sensor that measures a temperature of a supply air flow passing through an air supply passage; and a control unit that controls operations of an air supply fan and an air exhaust fan and turning-on and turning-off of the external connection heater based on a measurement result of the temperature sensor. The external connection heater is installed in an outdoor air-supply duct and heats a supply air flow flowing through the air supply passage into a heat exchanger. The air supply fan is operable at a plurality of intensities, and the control unit prohibits a state in which the air supply fan is operated at an intensity lower than an intensity set in advance and the external connection heater is turned on.
    Type: Application
    Filed: October 10, 2014
    Publication date: August 3, 2017
    Applicant: Mitsubishi Electric Corporation
    Inventors: Kohei HASEGAWA, Kohei MATSUMOTO, Masashi ASHINO, Fumio SAITO
  • Patent number: 9696654
    Abstract: An image forming apparatus includes an image bearer, an image forming device, a toner concentration detector, a toner supply device, an image density detector, and a controller including a memory device. At a predetermined timing before image formation is started, the controller adjusts a developing potential to adjust an image density of a detection toner image on the image bearer and drives the toner supply device or the developing device to adjust a toner concentration in the developing device. After the image formation is started, the controller drives the toner supply device to adjust the toner concentration, and, in a predetermined sheet interval, adjusts the target concentration based on the image density of the detection toner image formed in a non-image area of the image bearer. When the toner concentration is higher than the target concentration plus a threshold, the controller suspends image formation and readjusts the developing potential.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: July 4, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayoshi Nakayama, Takuma Higa, Hiroyuki Kunii, Masaki Sukesako, Kazuaki Kamihara, Yuichi Aizawa, Masahiro Katoh, Kohei Matsumoto
  • Patent number: 9500978
    Abstract: An image forming apparatus includes a first electric charging unit having an electric discharge wire to uniformly electrify a surface of the electrostatic latent image bearer, a second electric charging unit having a second electric discharge wire to execute a pre-electric charge removal electric charging process by electrifying the surface of the electrostatic latent image bearer subsequent to a transfer process to transfer a toner image, and a first electric charge removing device to diselectrify the surface of the electrostatic latent image bearer by irradiating it with electric charge removing light subsequent to the pre-electric charge removal electric charging process. The first electric charge removing device is disposed within an electric discharge region of the second electric discharge wire on a downstream side of an extreme upstream edge of the electric discharge region of the second electric discharge wire in a rotational direction of the electrostatic latent image bearer.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 22, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masayoshi Nakayama, Takuma Higa, Hiroyuki Kunil, Masaki Sukesako, Kazuaki Kamihara, Masakazu Terao, Yuichi Aizawa, Masahiro Katoh, Kohei Matsumoto, Toshihiro Sugiyama