Patents by Inventor Tsuyoshi Nagasu

Tsuyoshi Nagasu 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: 12269264
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit among the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.
    Type: Grant
    Filed: November 22, 2022
    Date of Patent: April 8, 2025
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsunobu Gohda, Tsuyoshi Nagasu, Koichi Kudo, Tomoaki Hayashi, Masayuki Sunaoshi, Masahiro Mizuno
  • Patent number: 11618250
    Abstract: A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.
    Type: Grant
    Filed: October 13, 2020
    Date of Patent: April 4, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Nagasu, Tomoaki Hayashi, Masayuki Sunaoshi, Koichi Kudo, Masahiro Mizuno
  • Publication number: 20230088949
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit among the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.
    Type: Application
    Filed: November 22, 2022
    Publication date: March 23, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Mitsunobu GOHDA, Tsuyoshi NAGASU, Koichi KUDO, Tomoaki HAYASHI, Masayuki SUNAOSHI, Masahiro MIZUNO
  • Patent number: 11535031
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit among the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: December 27, 2022
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsunobu Gohda, Tsuyoshi Nagasu, Koichi Kudo, Tomoaki Hayashi, Masayuki Sunaoshi, Masahiro Mizuno
  • Publication number: 20210023837
    Abstract: A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.
    Type: Application
    Filed: October 13, 2020
    Publication date: January 28, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Tsuyoshi NAGASU, Tomoaki HAYASHI, Masayuki SUNAOSHI, Koichi KUDO, Masahiro MIZUNO
  • Publication number: 20210008879
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit among the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.
    Type: Application
    Filed: September 25, 2020
    Publication date: January 14, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Mitsunobu GOHDA, Tsuyoshi NAGASU, Koichi KUDO, Tomoaki HAYASHI, Masayuki SUNAOSHI, Masahiro MIZUNO
  • Patent number: 10836154
    Abstract: A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: November 17, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Nagasu, Tomoaki Hayashi, Masayuki Sunaoshi, Koichi Kudo, Masahiro Mizuno
  • Patent number: 10814622
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control the each liquid ejection head unit of the plurality of liquid ejection head units to eject liquid at a timing based on a plurality of the detection results of a plurality of the detection units.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: October 27, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsunobu Gohda, Tsuyoshi Nagasu, Koichi Kudo, Tomoaki Hayashi, Masayuki Sunaoshi, Masahiro Mizuno
  • Patent number: 10744756
    Abstract: A conveyance device includes a conveyor to convey a conveyed object, a head unit to perform an operation on the conveyed object being conveyed at a first conveyance speed, a sensor to acquire data of the conveyed object, a gauge to output a measured travel amount of the conveyed object, and a processor. The processor includes a calculator to calculate a detection result including at least one of a position, a speed of travel, and a calculated travel amount of the conveyed object based on the data acquired by the sensor; and an adjusting unit to adjust a timing of acquisition of the data acquired while the conveyed object is conveyed at the first conveyance speed, based on the detection result and the measured travel amount of the conveyed object being conveyed at a second conveyance speed lower than the first conveyance speed.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: August 18, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsunobu Gohda, Tomoaki Hayashi, Masahiro Mizuno, Tsuyoshi Nagasu, Koichi Kudo, Masayuki Sunaoshi
  • Publication number: 20200171854
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that are configured to eject liquid onto a conveyed object that is being conveyed; a detection unit that is provided with respect to each liquid ejection head unit of the plurality of liquid ejection head units and is configured to output a detection result indicating at least one of a position, a moving speed, and an amount of movement of the conveyed object with respect to a conveying direction of the conveyed object; and a control unit configured to control each liquid ejection head unit of the plurality of liquid ejection head units to eject the liquid based on the detection result.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 4, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Masayuki SUNAOSHI, Tsuyoshi NAGASU, Tomoaki HAYASHI, Koichi KUDO, Masahiro MIZUNO
  • Publication number: 20200171846
    Abstract: A liquid ejection apparatus is provided that includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path for the conveyed object; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a detection unit that is installed between the first support member and the second support member for the corresponding liquid ejection head unit and is configured to output a detection result indicating a position of the conveyed object with respect to a direction orthogonal to a conveying direction of the conveyed object; and a moving unit configured to move each liquid ejection head unit based on the detection result.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 4, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomoaki HAYASHI, Tsuyoshi NAGASU, Masayuki SUNAOSHI, Koichi KUDO, Masahiro MIZUNO
  • Patent number: 10632770
    Abstract: A conveyance device includes a conveyor to convey a conveyed object, a head unit to perform an operation on the conveyed object, a sensor to obtain surface data of the conveyed object, provided for each head unit, and at least one processor. The processor is configured to calculate a first detection result including at least one of a position, a speed of movement, and an amount of movement of the conveyed object based on the surface data, set a detection area based on the first detection result, calculate a second detection result using the detection area according to the first detection result. The processor is further configured to control operation of the at least one head unit based on the second detection result.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: April 28, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Masahiro Mizuno, Tomoaki Hayashi, Tsuyoshi Nagasu, Masayuki Sunaoshi, Mitsunobu Gohda
  • Patent number: 10427423
    Abstract: A recording device discharge position adjustor includes a recording device to discharge liquid droplets onto a recording medium; an edge detector unit to detect a lateral edge position of the recording medium in a direction perpendicular to a recording medium conveyance direction; a discharge position adjustor to adjust a discharge position of the liquid droplets from the recording device relative to the recording medium; a controller to adjust the discharge position using the discharge position adjustor; and an edge position converter to convert the edge position of the recording medium detected by the edge detector unit to an edge position at a position of the recording device, in which the controller adjusts the discharge position of the recording device by an adjustment amount corresponding to the edge position of the recording medium at the position of the recording device converted by the edge position converter.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: October 1, 2019
    Assignee: Richoh Company, Ltd.
    Inventors: Tsuyoshi Nagasu, Takahiro Inoue, Tomoaki Hayashi
  • Patent number: 10336063
    Abstract: A liquid discharge apparatus includes a head to discharge liquid onto a conveyed object, at least one light source to irradiate the conveyed object with light having a high relative intensity in a range of wavelength in which a relative reflectance of the liquid is high, and a detector including at least one optical sensor to perform imaging of the conveyed object being irradiated by the at least one light source, to generate data. The detector is configured to generate a detection result based on the data. The detection result including at least one of a conveyance amount of the conveyed object and a conveyance speed of the conveyed object.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: July 2, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hanako Bando, Koichi Kudo, Tsuyoshi Nagasu
  • Patent number: 10334130
    Abstract: An image forming apparatus includes a conveyor to convey a conveyed object in a conveyance direction, a plurality of head units to perform image formation on the conveyed object, a displacement sensor disposed downstream from the plurality of head units to detect a position adjustment image on the conveyed object, formed by the plurality of head units, and at least one processor configured to adjust an image formation position of at least one of the head units in a direction orthogonal to the conveyance direction, based on a result generated by the displacement sensor. The image forming apparatus further includes a surface sensor to obtain surface data of the conveyed object at a position corresponding to the head unit to be adjusted, and the processor further adjusts the image formation position in the orthogonal direction based on the surface data obtained by the surface sensor.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: June 25, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Sunaoshi, Tomoaki Hayashi, Masahiro Mizuno, Tsuyoshi Nagasu
  • Publication number: 20190143675
    Abstract: A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Tsuyoshi NAGASU, Tomoaki HAYASHI, Masayuki SUNAOSHI, Koichi KUDO, Masahiro MIZUNO
  • Patent number: 10207494
    Abstract: A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: February 19, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Nagasu, Tomoaki Hayashi, Masayuki Sunaoshi, Koichi Kudo, Masahiro Mizuno
  • Publication number: 20180272694
    Abstract: A conveyance device includes a conveyor to convey a conveyed object, a head unit to perform an operation on the conveyed object being conveyed at a first conveyance speed, a sensor to acquire data of the conveyed object, a gauge to output a measured travel amount of the conveyed object, and a processor. The processor includes a calculator to calculate a detection result including at least one of a position, a speed of travel, and a calculated travel amount of the conveyed object based on the data acquired by the sensor; and an adjusting unit to adjust a timing of acquisition of the data acquired while the conveyed object is conveyed at the first conveyance speed, based on the detection result and the measured travel amount of the conveyed object being conveyed at a second conveyance speed lower than the first conveyance speed.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 27, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Mitsunobu Gohda, Tomoaki Hayashi, Masahiro Mizuno, Tsuyoshi Nagasu, Koichi Kudo, Masayuki Sunaoshi
  • Publication number: 20180270366
    Abstract: An image forming apparatus includes a conveyor to convey a conveyed object in a conveyance direction, a plurality of head units to perform image formation on the conveyed object, a displacement sensor disposed downstream from the plurality of head units to detect a position adjustment image on the conveyed object, formed by the plurality of head units, and at least one processor configured to adjust an image formation position of at least one of the head units in a direction orthogonal to the conveyance direction, based on a result generated by the displacement sensor. The image forming apparatus further includes a surface sensor to obtain surface data of the conveyed object at a position corresponding to the head unit to be adjusted, and the processor further adjusts the image formation position in the orthogonal direction based on the surface data obtained by the surface sensor.
    Type: Application
    Filed: March 14, 2018
    Publication date: September 20, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Masayuki Sunaoshi, Tomoaki Hayashi, Masahiro Mizuno, Tsuyoshi Nagasu
  • Publication number: 20180236794
    Abstract: A conveyance device includes a conveyor to convey a conveyed object, a head unit to perform an operation on the conveyed object, a sensor to obtain surface data of the conveyed object, provided for each head unit, and at least one processor. The processor is configured to calculate a first detection result including at least one of a position, a speed of movement, and an amount of movement of the conveyed object based on the surface data, set a detection area based on the first detection result, calculate a second detection result using the detection area according to the first detection result. The processor is further configured to control operation of the at least one head unit based on the second detection result.
    Type: Application
    Filed: February 14, 2018
    Publication date: August 23, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Masahiro Mizuno, Tomoaki Hayashi, Tsuyoshi Nagasu, Masayuki Sunaoshi, Mitsunobu Gohda