Patents by Inventor Takehito Washizawa

Takehito Washizawa 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: 11897275
    Abstract: A printing apparatus includes a carriage supporting a liquid discharging head for discharging liquid onto a medium being transported, and caused to perform scanning along a width direction intersecting with a transport direction of the medium, a supporting member having a first guide rail extending along the width direction, and a support face capable of supporting the medium, a first engaging portion engaged with the first guide rail, and an edge holder having a plate member covering a first end portion of the medium on a first direction side in the width direction. On the first direction side of an end portion on the first direction side in the width direction of the first guide rail, a retraction region is provided in which the edge holder can be disposed in a state in which an engaging state between the first guide rail and the first engaging portion is released.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: February 13, 2024
    Assignee: Seiko Epson Corporation
    Inventor: Takehito Washizawa
  • Patent number: 11712913
    Abstract: A liquid ejecting device includes a head configured to eject liquid, a holding unit holding the head, a base unit holding the holding unit, a guide unit movably holding the base unit, the guide unit being configured to guide the base unit, and a detection unit attached to the base unit, the detection unit being configured to detect vibration of the base unit, in which the base unit includes a first surface and a second surface opposite to the first surface, the guide unit is attached to the first surface, and the detection unit is attached to at least one of the first surface and the second surface.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: August 1, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Takehito Washizawa
  • Patent number: 11518181
    Abstract: A printing apparatus includes a conveyance unit configured to convey a medium, a suction unit configured to suction the medium, a control unit configured to control the conveyance unit and the suction unit, and a communication interface configured to communicate with a server apparatus. The control unit performs preliminary conveyance in which the conveyance unit conveys the medium in a state where the suction unit performs suction, measures a load determination value that changes in accordance with a conveyance load of the medium in the preliminary conveyance, acquires a conveyance load coefficient on a basis of the load determination value and a suction force of the suction unit, and transmits, to the server apparatus through the communication interface, the conveyance load coefficient or parameter determination information, together with medium type information about a type of the medium. the parameter determination information includes the load determination value and the suction force.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: December 6, 2022
    Assignee: Seiko Epson Corporation
    Inventor: Takehito Washizawa
  • Publication number: 20220234375
    Abstract: A liquid ejecting device includes a head configured to eject liquid, a holding unit holding the head, a base unit holding the holding unit, a guide unit movably holding the base unit, the guide unit being configured to guide the base unit, and a detection unit attached to the base unit, the detection unit being configured to detect vibration of the base unit, in which the base unit includes a first surface and a second surface opposite to the first surface, the guide unit is attached to the first surface, and the detection unit is attached to at least one of the first surface and the second surface.
    Type: Application
    Filed: January 24, 2022
    Publication date: July 28, 2022
    Inventor: Takehito WASHIZAWA
  • Patent number: 11318761
    Abstract: A liquid ejecting system includes an environmental information acquiring unit that acquires, as environmental information at least one of a temperature and a humidity, an ejecting unit that ejects a liquid onto a medium, a drying unit that dries the medium onto which the liquid is ejected by the ejecting unit, a control unit that controls the ejecting unit and the drying unit, and a storage unit that stores setting information. The control unit acquires drying information corresponding to medium type information and ejection amount information acquired as a liquid ejection condition and the environmental information acquired by the environmental information acquiring unit, based on the setting information stored in the storage unit, and performs drying control that controls the drying unit, based on the acquired drying information.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: May 3, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Katsuya Asamoto, Takehito Washizawa, Tsuneyuki Sasaki
  • Patent number: 11260675
    Abstract: A liquid discharge apparatus is provided that includes a transport unit configured to transport a medium, a discharge unit configured to discharge a liquid onto the medium, a housing including therein the discharge unit, a humidifying unit configured to humidify an interior of the housing, and a humidity detection unit configured to detect a humidity. When the humidity detection unit detected a humidity less than a lower limit value (one example of a first predetermined value) (positive determination in step S12), the interior of the housing is humidified by the humidifying unit during transport by the transport unit or during discharge by the discharge unit (step S16).
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: March 1, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Katsuya Asamoto, Tsuneyuki Sasaki, Takehito Washizawa
  • Patent number: 11235571
    Abstract: A liquid discharge apparatus is provided that includes a discharge unit configured to discharge a liquid onto a medium, a support portion configured to support a portion of the medium, the liquid being discharged from the discharge unit onto the portion of the medium, a housing including therein the discharge unit, a humidity detection unit configured to detect a humidity, and a display control unit configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity less than a lower limit value, and configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity exceeding an upper limit value greater than the lower limit value.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: February 1, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Katsuya Asamoto, Tsuneyuki Sasaki, Takehito Washizawa
  • Publication number: 20210300072
    Abstract: A printing apparatus includes a conveyance unit configured to convey a medium, a suction unit configured to suction the medium, a control unit configured to control the conveyance unit and the suction unit, and a communication interface configured to communicate with a server apparatus. The control unit performs preliminary conveyance in which the conveyance unit conveys the medium in a state where the suction unit performs suction, measures a load determination value that changes in accordance with a conveyance load of the medium in the preliminary conveyance, acquires a conveyance load coefficient on a basis of the load determination value and a suction force of the suction unit, and transmits, to the server apparatus through the communication interface, the conveyance load coefficient or parameter determination information, together with medium type information about a type of the medium. the parameter determination information includes the load determination value and the suction force.
    Type: Application
    Filed: March 29, 2021
    Publication date: September 30, 2021
    Inventor: Takehito WASHIZAWA
  • Publication number: 20210268816
    Abstract: A printing apparatus includes a carriage supporting a liquid discharging head for discharging liquid onto a medium being transported, and caused to perform scanning along a width direction intersecting with a transport direction of the medium, a supporting member having a first guide rail extending along the width direction, and a support face capable of supporting the medium, a first engaging portion engaged with the first guide rail, and an edge holder having a plate member covering a first end portion of the medium on a first direction side in the width direction. On the first direction side of an end portion on the first direction side in the width direction of the first guide rail, a retraction region is provided in which the edge holder can be disposed in a state in which an engaging state between the first guide rail and the first engaging portion is released.
    Type: Application
    Filed: February 25, 2021
    Publication date: September 2, 2021
    Inventor: Takehito WASHIZAWA
  • Publication number: 20210031510
    Abstract: A liquid ejecting system includes an environmental information acquiring unit that acquires, as environmental information at least one of a temperature and a humidity, an ejecting unit that ejects a liquid onto a medium, a drying unit that dries the medium onto which the liquid is ejected by the ejecting unit, a control unit that controls the ejecting unit and the drying unit, and a storage unit that stores setting information. The control unit acquires drying information corresponding to medium type information and ejection amount information acquired as a liquid ejection condition and the environmental information acquired by the environmental information acquiring unit, based on the setting information stored in the storage unit, and performs drying control that controls the drying unit, based on the acquired drying information.
    Type: Application
    Filed: July 29, 2020
    Publication date: February 4, 2021
    Inventors: Katsuya ASAMOTO, Takehito WASHIZAWA, Tsuneyuki SASAKI
  • Patent number: 10850537
    Abstract: Provided is a liquid ejecting apparatus including a liquid ejecting unit configured to eject a liquid onto a medium (sheet) being transported in a transport direction, and a medium supporting unit arranged to face the liquid ejecting unit and configured to support the sheet being transported, wherein the medium supporting unit includes, in a width direction intersecting the transport direction, a plurality of first ribs arranged in parallel with the transport direction at an upstream side of a region (print region), where the liquid ejecting unit performs ejection onto the sheet. In addition, the liquid ejecting apparatus further includes a suction mechanism, and the medium supporting unit includes, at the upstream side, a recessed portion sectioned by the first ribs, the recessed portion including a suction hole for causing a suction force by the suction mechanism to be applied onto the sheet.
    Type: Grant
    Filed: June 6, 2019
    Date of Patent: December 1, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Shiohara, Takehito Washizawa
  • Publication number: 20200307185
    Abstract: A liquid discharge apparatus is provided that includes a transport unit configured to transport a medium, a discharge unit configured to discharge a liquid onto the medium, a housing including therein the discharge unit, a humidifying unit configured to humidify an interior of the housing, and a humidity detection unit configured to detect a humidity. When the humidity detection unit detected a humidity less than a lower limit value (one example of a first predetermined value) (positive determination in step S12), the interior of the housing is humidified by the humidifying unit during transport by the transport unit or during discharge by the discharge unit (step S16).
    Type: Application
    Filed: March 24, 2020
    Publication date: October 1, 2020
    Inventors: Katsuya ASAMOTO, Tsuneyuki SASAKI, Takehito WASHIZAWA
  • Publication number: 20200307186
    Abstract: A liquid discharge apparatus is provided that includes a discharge unit configured to discharge a liquid onto a medium, a support portion configured to support a portion of the medium, the liquid being discharged from the discharge unit onto the portion of the medium, a housing including therein the discharge unit, a humidity detection unit configured to detect a humidity, and a display control unit configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity less than a lower limit value, and configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity exceeding an upper limit value greater than the lower limit value.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Inventors: Katsuya ASAMOTO, Tsuneyuki SASAKI, Takehito WASHIZAWA
  • Patent number: 10569578
    Abstract: A printing apparatus includes a platen including a first guide rail and a second guide rail mutually parallel in a width direction that intersects a transport direction of a medium; an edge holder including a plate-shaped member that covers an end portion of the medium in the width direction, a first engaging portion that engages with the first guide rail, and a second engaging portion that engages with the second guide rail; and a changing portion that is provided on the first engaging portion side and is for changing a position of the plate-shaped member in the width direction. A space in the transport direction formed between the first engaging portion and the first guide rail is narrower than a space in the transport direction formed between the second engaging portion and the second guide rail.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 25, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Takehito Washizawa, Hiroki Aoki
  • Publication number: 20190375216
    Abstract: Provided is a liquid ejecting apparatus including a liquid ejecting unit configured to eject a liquid onto a medium (sheet) being transported in a transport direction, and a medium supporting unit arranged to face the liquid ejecting unit and configured to support the sheet being transported, wherein the medium supporting unit includes, in a width direction intersecting the transport direction, a plurality of first ribs arranged in parallel with the transport direction at an upstream side of a region (print region), where the liquid ejecting unit performs ejection onto the sheet. In addition, the liquid ejecting apparatus further includes a suction mechanism, and the medium supporting unit includes, at the upstream side, a recessed portion sectioned by the first ribs, the recessed portion including a suction hole for causing a suction force by the suction mechanism to be applied onto the sheet.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Inventors: Satoru SHIOHARA, Takehito WASHIZAWA
  • Publication number: 20190193435
    Abstract: A printing apparatus includes a platen including a first guide rail and a second guide rail mutually parallel in a width direction that intersects a transport direction of a medium; an edge holder including a plate-shaped member that covers an end portion of the medium in the width direction, a first engaging portion that engages with the first guide rail, and a second engaging portion that engages with the second guide rail; and a changing portion that is provided on the first engaging portion side and is for changing a position of the plate-shaped member in the width direction. A space in the transport direction formed between the first engaging portion and the first guide rail is narrower than a space in the transport direction formed between the second engaging portion and the second guide rail.
    Type: Application
    Filed: December 21, 2018
    Publication date: June 27, 2019
    Inventors: Takehito WASHIZAWA, Hiroki AOKI
  • Patent number: 10308041
    Abstract: A printing apparatus includes a medium supporting portion for supporting a medium, a head for printing on the medium, a medium pressing member that includes a plurality of materials stacked thereon, and a platen heater for heating the medium pressing member. The medium pressing member includes a base portion being attached to the medium supporting portion, and an eaves portion which forms a gap with the medium supporting portion and suppresses floating of the medium from the medium supporting portion. The base portion includes a first material for forming a first surface being attached to the medium supporting portion, and a second material for forming a second surface on an opposite side of the first surface, and a coefficient of thermal expansion of the first material is higher than a coefficient of thermal expansion of the second material.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: June 4, 2019
    Assignee: Seiko Epson Corporation
    Inventor: Takehito Washizawa
  • Publication number: 20180345687
    Abstract: A printing apparatus includes a transport unit that transports a medium in a transport direction by rotating while pinching the medium, a support portion that is disposed on a downstream side of the transport unit in the transport direction and that has a support surface that supports the medium transported by the transport unit, a printing unit that is disposed opposite the support portion and that is capable of printing an image and a mark on the medium, and a detection unit that detects the mark printed on the medium by the printing unit when printing on both surfaces of the medium is performed, where the detection unit is disposed on a downstream side of the transport unit in the transport direction.
    Type: Application
    Filed: June 4, 2018
    Publication date: December 6, 2018
    Inventors: Yoshitsugu TOKAI, Hiroki AOKI, Takehito WASHIZAWA
  • Patent number: 10118383
    Abstract: A recording apparatus is provided with a droplet discharging head having a nozzle forming portion and a charging unit. The nozzle forming portion includes nozzles formed therein. The charging unit is configured to impart an electrical charge to the medium. The charging unit imparts, to the medium, an electrical charge having the same polarity as an electrically charged state of the nozzle forming portion after the droplets are discharged.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: November 6, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Murayama, Takehito Washizawa, Yoshiyuki Konishi
  • Publication number: 20180178554
    Abstract: A printing apparatus includes a medium supporting portion for supporting a medium, a head for printing on the medium, a medium pressing member that includes a plurality of materials stacked thereon, and a platen heater for heating the medium pressing member. The medium pressing member includes a base portion being attached to the medium supporting portion, and an eaves portion which forms a gap with the medium supporting portion and suppresses floating of the medium from the medium supporting portion. The base portion includes a first material for forming a first surface being attached to the medium supporting portion, and a second material for forming a second surface on an opposite side of the first surface, and a coefficient of thermal expansion of the first material is higher than a coefficient of thermal expansion of the second material.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 28, 2018
    Inventor: Takehito WASHIZAWA