Patents by Inventor Taku Ishizawa

Taku Ishizawa 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: 20200238722
    Abstract: An ink replenishing container includes a first bottom surface that defines a portion of an ink storage portion in which an ink is stored, a first side wall that intersects the first bottom surface and defines a portion of the ink storage portion, an ink outlet that communicates with the ink storage portion, and a second side wall that is disposed outside the first side wall, and that is not in contact with the ink stored in the ink storage portion.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI
  • Publication number: 20200238715
    Abstract: An ink refill container 31 includes a container body 61 including an inner tube portion 62 constituting an ink containing chamber 41, an inner bottom 64 joined to the inner tube portion 62, an ink-outlet forming portion 38 that is provided in the inner tube portion 62 and that includes an ink outlet 46, and a cover 75 including an outer bottom 76 covering the inner bottom 64 from below. The cover 75 includes a receiving recess 95 that is configured of the outer bottom 76 and a tubular receiving wall 93 integrally coupled to the outer bottom 76 and that receives an ink IK leaked from the ink containing chamber 41 through a junction of the container body 61 and the inner bottom 64.
    Type: Application
    Filed: January 29, 2020
    Publication date: July 30, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Taku ISHIZAWA
  • Publication number: 20200238713
    Abstract: An ink replenishing container includes an ink storage member in which an ink is stored, the ink storage member having a first side wall that defines the ink storage member and an opening portion surrounded by the first side wall, an ink outlet that communicates with the ink storage portion, and a film member that closes the opening portion.
    Type: Application
    Filed: January 23, 2020
    Publication date: July 30, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI
  • Publication number: 20200139716
    Abstract: Convenience of an ink bottle and a bottle set is improved. An ink bottle includes: a container portion that contains ink; a guiding portion that is formed in one end portion of the container portion, and includes an outflow port from which the ink in the container portion flow out; and a cover that covers at least an end portion of the container portion on the opposite side of the guiding portion.
    Type: Application
    Filed: December 27, 2019
    Publication date: May 7, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI, Ryoichi TANAKA, Manabu AKAHANE, Koichi TOBA, Takumi NAGASHIMA, Yoshiaki SHIMIZU, Tadashi WATANABE, Noriyuki FUKASAWA
  • Publication number: 20200130357
    Abstract: A liquid ejection apparatus comprises a carriage that includes a liquid ejection head and that moves inside a predetermined moving range, a plurality of liquid containers mounted on the carriage, the plurality of liquid containers including liquid refill ports respectively, an exterior member that covers the moving range, the exterior member including an opening configured to have a liquid outlet portion of the liquid refilling container be inserted therein, a selection information receiving portion that receives an input of a selected target liquid container, among the plurality of liquid containers, in which refilling of the liquid is to be performed, and a control unit that, using selection information that the selected information receiving portion has received, moves the carriage so that the liquid refill port of the target liquid container faces the opening.
    Type: Application
    Filed: October 29, 2019
    Publication date: April 30, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI
  • Publication number: 20200114651
    Abstract: A liquid supply unit includes an outer shell, a liquid supply portion that is arranged in the outer shell and can supply a liquid to the liquid ejection apparatus, and an engaged structure including an engaged portion that can engage with the engagement portion of the liquid ejection apparatus, and a first opening that is formed in the outer shell and through which the engagement structure can be inserted. The engaged portion is arranged further inward than an outer surface of the outer shell.
    Type: Application
    Filed: December 12, 2019
    Publication date: April 16, 2020
    Applicant: Seiko Epson Corporation
    Inventors: Taku ISHIZAWA, Satoshi SHINADA, Yoshiaki SHIMIZU, Noriyuki FUKASAWA
  • Patent number: 10618292
    Abstract: A printer comprises a main body cover configured to change over a state between a closed state and an open state; a tank including an ink container portion configured to contain ink and an ink inlet configured to inject the ink; a tank cover configured to change over a state between a closed state and an open state; and an ink bottle including a container portion and a delivery portion. In the open state of both the main body cover and the tank cover, the ink bottle is self-supported and configured to deliver the ink from the delivery portion of the ink bottle to the ink inlet. A space is formed between the main body cover and the ink bottle when the ink bottle is self-supported. At least part of the ink bottle is located in a locus drawn by the main body cover during rotation.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: April 14, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadahiro Mizutani, Naomi Kimura, Shoma Kudo, Ryoichi Tanaka, Tadashi Watanabe
  • Publication number: 20200086648
    Abstract: An ink tank that communicates with an ink ejecting head, includes: an ink chamber configured to house ink; an ink inlet portion that communicates with the ink chamber and that receives ink supplied from an ink supply container; and an ink viewing portion that is a portion of a wall that defines the ink chamber and that enables the ink in the ink chamber to be viewed from an outside, the ink chamber having an ink guide wall for guiding the ink from the ink inlet portion toward the ink viewing portion.
    Type: Application
    Filed: September 17, 2019
    Publication date: March 19, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tadahiro MIZUTANI, Taku ISHIZAWA, Noriyuki FUKASAWA, Hideki OKUMURA, Naomi KIMURA
  • Publication number: 20200070523
    Abstract: An ink replenish container comprises a container main body that is able to store the ink; an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet; and a cap attachable to a front end side of the ink outlet formation member. The ink outlet includes an outer circumferential surface and an inner circumferential surface located inward of the outer circumferential surface, the inner circumferential surface surrounding an opening through which the ink passes. The cap includes a first protrusion that is configured to contact with the outer circumferential surface of the ink outlet to form a first exit seal portion, and a second protrusion that is configured to contact with the inner circumferential surface of the ink outlet to form a second exit seal portion.
    Type: Application
    Filed: November 6, 2019
    Publication date: March 5, 2020
    Applicant: Seiko Epson Corporation
    Inventors: Noriyuki FUKASAWA, Taku ISHIZAWA, Tadashi WATANABE, Ryoichi TANAKA, Tadahiro MIZUTANI
  • Publication number: 20200070534
    Abstract: A liquid container is used in a liquid consumption device including a mounting unit to which a liquid container provided with a prism at a predetermined site, and a liquid container not provided with a prism at the predetermined site are replaceably mounted; a light emitting unit that emits light to the predetermined site of the liquid container; and a light receiving unit that receives light reflected from the predetermined site. The liquid container is not provided with the prism, and is provided with a reflection reduction unit that reduces reflection of light to the light receiving unit, at the predetermined site.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Noriyuki FUKASAWA, Shuichi KOGANEHIRA, Takayuki YAZAWA
  • Patent number: 10569556
    Abstract: Provided is a highly-convenient ink replenishment container. The ink replenishment container includes: a container main body portion capable of containing the ink; and an ink outlet forming portion that is to be attached to an end portion of the container main body portion and at which an ink outlet through which the ink flows out is formed. In a region located outside of the ink outlet, the ink replenishment container includes an erroneous insertion prevention portion that protrudes relative to the ink outlet in a direction opposite to the container main body portion in an axial direction as an axial center, and is configured to be inserted into a recessed portion and to prevent erroneous insertion into the ink tank. The erroneous insertion prevention portion includes protrusions that can be attached and detached, the protrusions are attached and detached in accordance with the shape of the recessed portion.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: February 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Tadahiro Mizutani
  • Patent number: 10543692
    Abstract: A liquid supply unit includes an outer shell, a liquid supply portion that is arranged in the outer shell and can supply a liquid to the liquid ejection apparatus, and an engaged structure including an engaged portion that can engage with the engagement portion of the liquid ejection apparatus, and a first opening that is formed in the outer shell and through which the engagement structure can be inserted. The engaged portion is arranged further inward than an outer surface of the outer shell.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 28, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Satoshi Shinada, Yoshiaki Shimizu, Noriyuki Fukasawa
  • Patent number: 10471723
    Abstract: An ink replenish container comprises a container main body that is able to store the ink; an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet; and a cap attachable to a front end side of the ink outlet formation member. The ink outlet includes an outer circumferential surface and an inner circumferential surface located inward of the outer circumferential surface, the inner circumferential surface surrounding an opening through which the ink passes. The cap includes a first protrusion that is configured to contact with the outer circumferential surface of the ink outlet to form a first exit seal portion, and a second protrusion that is configured to contact with the inner circumferential surface of the ink outlet to form a second exit seal portion.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: November 12, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Ryoichi Tanaka, Tadahiro Mizutani
  • Publication number: 20190329558
    Abstract: A liquid supplier can be attached to and detached from a case of a liquid ejection device, and includes a connection member located at an end of the case. The connection member includes a liquid outlet member including a liquid outlet port and a connection port, a container-side electric connector, a first receiving portion that receives a first positioning portion of the liquid ejection device, and a second receiving portion that receives a second positioning portion of the liquid ejection device. The width of the liquid supplier in the Z direction is smaller than a width in the Y direction and a width in the X direction. The liquid supplier further includes a tube whose one end is connected to the connection port, and into which liquid is injected from another end that is located outside the liquid ejection device.
    Type: Application
    Filed: April 24, 2019
    Publication date: October 31, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Manabu YAMAGUCHI, Hiroyuki KAWATE, Takumi NAGASHIMA, Hiroyoshi OZEKI, Taku ISHIZAWA
  • Patent number: 10434786
    Abstract: A liquid supply unit that includes a liquid ejection apparatus and configured to be mounted onto a holder unit that has a liquid introducing needle that extends in a first direction includes an outer shell, a liquid supply port, and an engagement structure including a first engagement portion, in which the first engagement portion is disposed on a mounting direction side of the outer shell at a position that overlaps with the outer shell when the liquid supply unit is viewed from the demounting direction side.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: October 8, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Yoshiaki Shimizu, Satoshi Shinada
  • Publication number: 20190299624
    Abstract: There are provided an ink refill container configured to appropriately refill an ink tank with ink and an ink refill system including such an ink refill container. An ink refill container 63 includes a container main body 64 provided to include an ink chamber 76; an ink outlet forming portion 66 provided at an edge of the container main body to include an ink outlet 65 configured to allow ink to flow out from the ink chamber; a valve 74 provided in the ink outlet forming portion and configured to seal the ink outlet in an openable and closable manner; and a positioning structure configured to abut on part of the ink tank and position the valve relative to the ink tank when the valve is opened. The positioning structure has a positioning surface 84 that is located on an opposite side to a container main body side where the container main body is located, across the valve and that is extended in a direction intersecting with a center axis 85 of the ink outlet.
    Type: Application
    Filed: June 8, 2017
    Publication date: October 3, 2019
    Applicant: Seiko Epson Corporation
    Inventors: Tadahiro MIZUTANI, Taku ISHIZAWA, Noriyuki FUKUSAWA, Naomi KIMURA, Shoma KUDO, Manabu AKAHANE
  • Patent number: 10399344
    Abstract: A liquid container comprises a liquid supply port provided in a bottom wall, a first chamber configured to contain a liquid, a second chamber configured to contain the liquid and to include at least one sub-chamber having a smaller dimension in the X direction than that of the first chamber, a partition wall configured to part the first chamber from the second chamber, and a connecting hole configured to connect the first chamber with the second chamber. The second chamber is connected with the liquid supply port, and the first chamber is connected with the liquid supply port via the connecting hole and the second chamber. The liquid contained in the first chamber is flowed from the connecting hole into the second chamber and is subsequently introduced through the sub-chamber to the liquid supply port.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: September 3, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadahiro Mizutani, Ryoichi Tanaka, Taku Ishizawa, Atsushi Kobayashi, Koichi Toba, Yoshiaki Shimizu, Shun Oya
  • Publication number: 20190232667
    Abstract: A liquid container comprises a liquid supply port provided in a bottom wall, a first chamber configured to contain a liquid, a second chamber configured to contain the liquid and to include at least one sub-chamber having a smaller dimension in the X direction than that of the first chamber, a partition wall configured to part the first chamber from the second chamber, and a connecting hole configured to connect the first chamber with the second chamber. The second chamber is connected with the liquid supply port, and the first chamber is connected with the liquid supply port via the connecting hole and the second chamber. The liquid contained in the first chamber is flowed from the connecting hole into the second chamber and is subsequently introduced through the sub-chamber to the liquid supply port.
    Type: Application
    Filed: April 8, 2019
    Publication date: August 1, 2019
    Applicant: Seiko Epson Corporation
    Inventors: Tadahiro MIZUTANI, Ryoichi TANAKA, Taku ISHIZAWA, Atsushi KOBAYASHI, Koichi TOBA, Yoshiaki SHIMIZU, Shun OYA
  • Patent number: 10350901
    Abstract: An ink bottle comprises a container main body configured to contain ink that is to be supplied to an ink tank, an ink outlet forming portion provided on an end of the container main body and configured to include an ink outlet that causes the ink to be flowed out from the container main body, and a valve provided in the ink outlet forming portion and configured to seal the ink outlet in an openable and closable manner. The ink outlet is formed in an end face of the ink outlet forming portion. The end face is arranged to face an opposite side of the ink outlet forming portion that is opposite to a container main body side thereof. A first recess is formed in an outer side portion of the ink outlet on the end face to be recessed toward the container main body side.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: July 16, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadahiro Mizutani, Koichi Toba, Ryoichi Tanaka, Taku Ishizawa, Manabu Akahane, Tadashi Watanabe, Noriyuki Fukasawa
  • Patent number: D865521
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: November 5, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Noriyuki Fukasawa, Manabu Akahane, Izumi Washizawa, Yasuhiko Fuchigami