Patents by Inventor Tatsuya Hotogi

Tatsuya Hotogi 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: 20220404755
    Abstract: An image forming apparatus includes: a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.
    Type: Application
    Filed: August 24, 2022
    Publication date: December 22, 2022
    Inventors: Yohei Suzuki, Junya Azami, Seiji Hara, Atsunobu Mori, Masafumi Monde, Tatsuya Hotogi, Hirotaka Shiomichi
  • Publication number: 20220299924
    Abstract: An image forming apparatus includes a first detector detecting an operation sound based on a sound wave received by a receiver; a second detector detecting basis weight of recording material based on an ultrasonic wave transmitted from a transmitter and received by the receiver; a switching unit that switches destination of a reception signal from the receiver between a first path to the first detector and a second path to the second detector; and a controller that controls the switching unit such that the reception signal is output to the first path at a first timing and to the second path at a second timing. When a predetermined condition is satisfied, the controller controls the switching unit such that the reception signal is output to the second path at the first timing or to the first path at the second timing.
    Type: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Inventors: Atsunobu Mori, Yohei Suzuki, Seiji Hara, Yasuhisa Matsumoto, Junya Azami, Masafumi Monde, Hirotaka Shiomichi, Tatsuya Hotogi
  • Patent number: 11442387
    Abstract: An image forming apparatus includes a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.
    Type: Grant
    Filed: January 8, 2021
    Date of Patent: September 13, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yohei Suzuki, Junya Azami, Seiji Hara, Atsunobu Mori, Masafumi Monde, Tatsuya Hotogi, Hirotaka Shiomichi
  • Patent number: 11385587
    Abstract: An image forming apparatus includes a first detector detecting an operation sound based on a sound wave received by a receiver; a second detector detecting basis weight of recording material based on an ultrasonic wave transmitted from a transmitter and received by the receiver; a switching unit that switches destination of a reception signal from the receiver between a first path to the first detector and a second path to the second detector; and a controller that controls the switching unit such that the reception signal is output to the first path at a first timing and to the second path at a second timing. When a predetermined condition is satisfied, the controller controls the switching unit such that the reception signal is output to the second path at the first timing or to the first path at the second timing.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: July 12, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsunobu Mori, Yohei Suzuki, Seiji Hara, Yasuhisa Matsumoto, Junya Azami, Masafumi Monde, Hirotaka Shiomichi, Tatsuya Hotogi
  • Publication number: 20210311424
    Abstract: An image forming apparatus includes a first detector detecting an operation sound based on a sound wave received by a receiver; a second detector detecting basis weight of recording material based on an ultrasonic wave transmitted from a transmitter and received by the receiver; a switching unit that switches destination of a reception signal from the receiver between a first path to the first detector and a second path to the second detector; and a controller that controls the switching unit such that the reception signal is output to the first path at a first timing and to the second path at a second timing. When a predetermined condition is satisfied, the controller controls the switching unit such that the reception signal is output to the second path at the first timing or to the first path at the second timing.
    Type: Application
    Filed: March 25, 2021
    Publication date: October 7, 2021
    Inventors: Atsunobu Mori, Yohei Suzuki, Seiji Hara, Yasuhisa Matsumoto, Junya Azami, Masafumi Monde, Hirotaka Shiomichi, Tatsuya Hotogi
  • Publication number: 20210132535
    Abstract: An image forming apparatus includes a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.
    Type: Application
    Filed: January 8, 2021
    Publication date: May 6, 2021
    Inventors: Yohei Suzuki, Junya Azami, Seiji Hara, Atsunobu Mori, Masafumi Monde, Tatsuya Hotogi, Hirotaka Shiomichi
  • Patent number: 10928765
    Abstract: An image forming apparatus includes a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: February 23, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yohei Suzuki, Junya Azami, Seiji Hara, Atsunobu Mori, Masafumi Monde, Tatsuya Hotogi, Hirotaka Shiomichi
  • Patent number: 10838319
    Abstract: The scanning apparatus and the image forming apparatus include a semiconductor laser emitting laser light for forming an electrostatic latent image according to image data on a photosensitive drum, a rotary polygon mirror scanning the laser light emitted from the semiconductor laser by rotation, a horizontal synchronization sensor arranged in a non-image area, and outputting a signal in response to the laser light being emitted, and a CPU performing intermittent emission control that causes the semiconductor laser to be emitted in an area in which the laser light is emitted to the horizontal synchronization sensor based on a BD cycle, the CPU switches the intermittent emission control based on the BD signal by a time the rotary polygon mirror reaches a target rotation speed.
    Type: Grant
    Filed: May 13, 2019
    Date of Patent: November 17, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsunobu Mori, Tatsuya Hotogi
  • Publication number: 20200310318
    Abstract: An image forming apparatus includes: a plurality of members for forming an image; a transmitting unit configured to transmit a sonic wave; a receiving unit configured to receive a first sonic wave that has been transmitted from the transmitting unit and has passed through a sheet and a second sonic wave that is generated from at least one of the plurality of members; a detection unit configured to detect information regarding a type or state of the sheet based on the first sonic wave; and a determination unit configured to determine a state of a member that has generated the second sonic wave based on the second sonic wave.
    Type: Application
    Filed: March 13, 2020
    Publication date: October 1, 2020
    Inventors: Yohei Suzuki, Junya Azami, Seiji Hara, Atsunobu Mori, Masafumi Monde, Tatsuya Hotogi, Hirotaka Shiomichi
  • Patent number: 10635017
    Abstract: A control unit performs first control for outputting a second signal based on a first signal in a case where a cycle of the first signal is within a predetermined cycle, and performs second control for outputting a second signal based on a predicted cycle of the first signal in a case where the cycle of the first signal is out of the predetermined cycle.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuya Hotogi
  • Patent number: 10520848
    Abstract: When a photosensitive member and a developing portion are in a separation state and in a start-up period, a first light emission is performed in an image region and a non-image region. When light is detected at least twice during a period when the first light emission is being performed, a second light emission is performed in the non-image region. When a prescribed period of time has elapsed from the start of the second light emission, a third light emission is performed in the image region in a third light emission amount that is smaller than a second light emission amount during a period in which the photosensitive member makes at least one revolution. After the third light emission is performed, the photosensitive member and the developing portion are switched to a contact state.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: December 31, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Ishida, Takeshi Shimba, Tatsuya Hotogi
  • Publication number: 20190354034
    Abstract: The scanning apparatus and the image forming apparatus include a semiconductor laser emitting laser light for forming an electrostatic latent image according to image data on a photosensitive drum, a rotary polygon mirror scanning the laser light emitted from the semiconductor laser by rotation, a horizontal synchronization sensor arranged in a non-image area, and outputting a signal in response to the laser light being emitted, and a CPU performing intermittent emission control that causes the semiconductor laser to be emitted in an area in which the laser light is emitted to the horizontal synchronization sensor based on a BD cycle, the CPU switches the intermittent emission control based on the BD signal by a time the rotary polygon mirror reaches a target rotation speed.
    Type: Application
    Filed: May 13, 2019
    Publication date: November 21, 2019
    Inventors: Atsunobu Mori, Tatsuya Hotogi
  • Publication number: 20190196354
    Abstract: A control unit performs first control for outputting a second signal based on a first signal in a case where a cycle of the first signal is within a predetermined cycle, and performs second control for outputting a second signal based on a predicted cycle of the first signal in a case where the cycle of the first signal is out of the predetermined cycle.
    Type: Application
    Filed: December 19, 2018
    Publication date: June 27, 2019
    Inventor: Tatsuya Hotogi
  • Publication number: 20190163087
    Abstract: In a photosensitive member and a developing portion are in a separation state and in a start-up period, a first light emission is performed in an image region and a non-image region; when light is detected at least twice during a period when the first light emission is being performed, a second light emission is performed in the non-image region; when a prescribed period of time has elapsed from the start of the second light emission, a third light emission is performed in the image region in a third light emission amount that is smaller than a second light emission amount during a period in which the photosensitive member makes at least one revolution; and, after the third light emission is performed, the photosensitive member and the developing portion are switched to a contact state.
    Type: Application
    Filed: November 27, 2018
    Publication date: May 30, 2019
    Inventors: Satoshi Ishida, Takeshi Shimba, Tatsuya Hotogi
  • Patent number: 10095155
    Abstract: An apparatus has a detection unit, a rotating polygonal mirror and a generation unit. The rotating polygonal mirror has reflecting surfaces and configured to deflect light. The detection unit outputs a first signal in accordance with detecting the light. The generation unit, based on the first signal, generates a second signal which is a main scanning synchronization signal for controlling a write start in a main scanning direction. The second signal has a first waveform and a second waveform. The first waveform does not correspond to a reference reflection surface. The second waveform corresponds to the reference reflection surface and is different to the first waveform.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: October 9, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Hotogi, Fumiaki Mizuno
  • Patent number: 10082666
    Abstract: A CPU is provided which controls a first light emission state in which a light source is controlled to emit a light beam to scan a full-scanning region and a second light emission state in which the light source is controlled to emit a light beam to scan a non-image region in a period from start of activation of a scanning motor to when the number of rotations of the scanning motor reaches a target number of rotations. The CPU acquires BD cycle values of BD signals generated by a main-scanning synchronization sensor, determines a second timing for changing from the first light emission state to the second light emission state on the basis of the two serial BD cycle values, and changes the semiconductor laser from the first light emission state to the second light emission state according to the second timing.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: September 25, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Hotogi, Atsunobu Mori
  • Patent number: 10027837
    Abstract: An apparatus includes a calculation unit configured to calculate information about power using a first signal and a second signal, a first communication unit configured to transmit a calculation result of the calculation unit, and a second communication unit configured to receive a plurality of pieces of setting information stored in a storage unit, wherein the calculation apparatus is capable of switching calculation processing of the calculation unit based on the plurality of pieces of setting information received via the second communication unit.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: July 17, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yasuhiro Shimura, Tatsuya Hotogi, Yuki Nakajima
  • Publication number: 20180024461
    Abstract: An apparatus has a detection unit, a rotating polygonal mirror and a generation unit. The rotating polygonal mirror has reflecting surfaces and configured to deflect light. The detection unit outputs a first signal in accordance with detecting the light. The generation unit, based on the first signal, generates a second signal which is a main scanning synchronization signal for controlling a write start in a main scanning direction. The second signal has a first waveform and a second waveform. The first waveform does not correspond to a reference reflection surface. The second waveform corresponds to the reference reflection surface and is different to the first waveform.
    Type: Application
    Filed: June 27, 2017
    Publication date: January 25, 2018
    Inventors: Tatsuya Hotogi, Fumiaki Mizuno
  • Publication number: 20170363862
    Abstract: A CPU is provided which controls a first light emission state in which a light source is controlled to emit a light beam to scan a full-scanning region and a second light emission state in which the light source is controlled to emit a light beam to scan a non-image region in a period from start of activation of a scanning motor to when the number of rotations of the scanning motor reaches a target number of rotations. The CPU acquires BD cycle values of BD signals generated by a main-scanning synchronization sensor, determines a second timing for changing from the first light emission state to the second light emission state on the basis of the two serial BD cycle values, and changes the semiconductor laser from the first light emission state to the second light emission state according to the second timing.
    Type: Application
    Filed: June 1, 2017
    Publication date: December 21, 2017
    Inventors: Tatsuya Hotogi, Atsunobu Mori
  • Publication number: 20170126918
    Abstract: An apparatus includes a calculation unit configured to calculate information about power using a first signal and a second signal, a first communication unit configured to transmit a calculation result of the calculation unit, and a second communication unit configured to receive a plurality of pieces of setting information stored in a storage unit, wherein the calculation apparatus is capable of switching calculation processing of the calculation unit based on the plurality of pieces of setting information received via the second communication unit.
    Type: Application
    Filed: October 26, 2016
    Publication date: May 4, 2017
    Inventors: Yasuhiro Shimura, Tatsuya Hotogi, Yuki Nakajima