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).

  • Patent number: 11141985
    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: December 12, 2019
    Date of Patent: October 12, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Satoshi Shinada, Yoshiaki Shimizu, Noriyuki Fukasawa
  • Publication number: 20210309015
    Abstract: A liquid container includes: a bag that contains a liquid; and a pair of members configured to be reused when the liquid container is reassembled by replacing the bag used. The pair of members are fixed to each other by one or more swaging pins.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 7, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Noriyuki FUKASAWA, Hiroyuki KAWATE, Taku ISHIZAWA, Takumi NAGASHIMA
  • Patent number: 11117379
    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: November 6, 2019
    Date of Patent: September 14, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Ryoichi Tanaka, Tadahiro Mizutani
  • Publication number: 20210263692
    Abstract: To provide a technique in which an image forming process is not restricted even when consumption information cannot be transmitted to the outside such as a server in an image forming apparatus. The image forming apparatus includes an operation control portion for executing a plurality of functions for forming an image; a memory that stores availability information of the plurality of functions according to a specified contract that defines usage conditions of the image forming apparatus; and a determination portion that determines, when a usage request for at least one of the plurality of functions is received, with reference to the availability information, whether or not the at least one of the plurality of functions corresponding to the usage request received is configured to be used, in which the operation control portion controls operation of the image forming apparatus in accordance with a determination result of the determination portion.
    Type: Application
    Filed: February 24, 2021
    Publication date: August 26, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI
  • Publication number: 20210237456
    Abstract: An ink refill container configured to refill an ink tank with ink and an ink refill system. An ink refill container includes a container main body having an ink chamber; an ink outlet forming portion provided at an edge of the container main body including an ink outlet configured to allow ink to flow out from the ink chamber; a valve provided in 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 ink tank when valve is opened. The positioning structure has a positioning surface located on an opposite side to a container main body side where the container main body is located, across the valve and extends in a direction intersecting with a center axis of the ink outlet.
    Type: Application
    Filed: April 23, 2021
    Publication date: August 5, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tadahiro MIZUTANI, Taku ISHIZAWA, Noriyuki FUKASAWA, Naomi KIMURA, Shoma KUDO, Manabu AKAHANE
  • Publication number: 20210229453
    Abstract: A liquid storage container includes: a housing including a case having a case opening, and a lid that closes the case opening; and a sheet that holds the lid and the case together, the sheet extending over lid exterior faces and case exterior faces and being disposed so as to surround the outer circumference of the housing.
    Type: Application
    Filed: January 27, 2021
    Publication date: July 29, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadahiro Mizutani, Mao Otashiro
  • Patent number: 11072180
    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: Grant
    Filed: September 17, 2019
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadahiro Mizutani, Taku Ishizawa, Noriyuki Fukasawa, Hideki Okumura, Naomi Kimura
  • Patent number: 11065879
    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: Grant
    Filed: January 29, 2020
    Date of Patent: July 20, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadahiro Mizutani, Ryoichi Tanaka, Taku Ishizawa
  • Patent number: 11059299
    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: Grant
    Filed: January 23, 2020
    Date of Patent: July 13, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Tadahiro Mizutani
  • Patent number: 11052668
    Abstract: The liquid container includes a housing member including an external circumferential wall surrounding a liquid storing chamber, an opening surrounded by an end portion of the external circumferential wall, and a closing wall opposing the liquid storing chamber at a position deep inside with respect to the opening, an external edge portion of the closing wall coupled to an end portion of the external circumferential wall, in which the liquid outlet portion is provided in the external circumferential wall; a valve provided in the liquid outlet portion, the valve being opened by having both a first pipe through which atmospheric air flows and a second pipe through which the liquid flows inserted therein when the liquid is made to flow out from the liquid storing chamber; a flexible wall sealing the opening portion; and an inner wall that extends from the closing wall towards an opening portion side in an area surrounded by the external circumferential wall and that is in contact with the flexible wall.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: July 6, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Seigo Miyazawa, Tadahiro Mizutani, Taku Ishizawa
  • Patent number: 11007787
    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: Grant
    Filed: May 27, 2020
    Date of Patent: May 18, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tadahiro Mizutani, Taku Ishizawa, Noriyuki Fukasawa, Naomi Kimura, Shoma Kudo, Manabu Akahane
  • Patent number: 11001068
    Abstract: An ink replenish container comprises a container main body that is able to store the ink; and an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet. The container main body includes a screw formation portion having a screw for engaging with the ink outlet formation member, and a shoulder portion provided on a front end side of the screw formation portion. The ink outlet formation member includes an abutting portion that abuts the shoulder portion.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: May 11, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Ryoichi Tanaka, Tadahiro Mizutani
  • Publication number: 20210129551
    Abstract: The printing system includes a liquid supply container that stores a liquid; a printing device that receives a liquid supplied from the liquid supply container and performs printing; an imaging device that acquires image information including at least a part of the liquid supply container; an acquisition section that acquires reference information; a determination section that collates the image information with the reference information and determines whether or not the liquid is allowed to be supplied according to a collation result; and a control section that controls the printing device according to the determination.
    Type: Application
    Filed: October 29, 2020
    Publication date: May 6, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tadahiro MIZUTANI, Taku ISHIZAWA, Ryoichi TANAKA
  • Patent number: 10974512
    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: Grant
    Filed: January 23, 2020
    Date of Patent: April 13, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Tadahiro Mizutani
  • Publication number: 20210070060
    Abstract: A liquid ejecting system includes a specific liquid ejecting apparatus having a first identifier indicative of coverage by a specific service plan, and a specific liquid container having a second identifier indicative of coverage by the specific service plan. The specific liquid ejecting apparatus includes an acquisition section that acquires the second identifier, and a determination section that compares the first identifier with the acquired second identifier and determines whether the specific liquid container is usable for the specific liquid ejecting apparatus.
    Type: Application
    Filed: September 9, 2020
    Publication date: March 11, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Shuichi KOGANEHIRA
  • Publication number: 20210060960
    Abstract: An ink container includes: a container body that contains ink; and an ink outlet forming portion that has an ink outlet. The container body includes a first connection portion provided around an opening. The ink outlet forming portion includes a second connection portion connectable to the first connection portion. The first connection portion includes a first screw forming portion provided on an outer surface. The second connection portion includes a second screw forming portion provided on an inner surface and configured to be brought into thread engagement with the first screw forming portion. The container body and the ink outlet forming portion include a stopper located inside an outer circumference of the second connection portion in a radial direction, the center of which is a center axis of the first connection portion and the second connection portion.
    Type: Application
    Filed: August 28, 2020
    Publication date: March 4, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshiaki SHIMIZU, Tadahiro MIZUTANI, Taku ISHIZAWA
  • Patent number: 10913280
    Abstract: An ink replenish container comprises a container main body that is able to store the ink; and an ink outlet formation member, attached to a front end side of the container main body, to form an ink outlet. The container main body includes a screw formation portion having a screw for engaging with the ink outlet formation member, and a shoulder portion provided on a front end side of the screw formation portion. The ink outlet formation member includes an abutting portion that abuts the shoulder portion.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: February 9, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Noriyuki Fukasawa, Taku Ishizawa, Tadashi Watanabe, Ryoichi Tanaka, Tadahiro Mizutani
  • Publication number: 20210031536
    Abstract: A container stores a fluid for use in an ink jet printer. The container includes: a casing that defines a storage space for storing the fluid, and has an opening communicating with the storage space; a film that covers the opening and seals the storage space; and a film attachment section that fixes the film to the casing. The casing includes a first surface that surrounds a periphery of the opening, and faces the film, and a second surface that surrounds the opening at a position farther from the opening than the first surface, has an angle intersecting the first surface, and faces the film, and the film attachment section is provided on the second surface.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 4, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Taku ISHIZAWA, Tadahiro MIZUTANI, Takuma OZAWA
  • Patent number: 10894418
    Abstract: A liquid supply unit includes an outer shell; a contact portion that is disposed in the outer shell and that is configured to electronically connect to the apparatus-side terminal by making contact with the apparatus-side terminal; a liquid supply port that is disposed on the outer shell and used for inserting the liquid introducing portion; and a receiving portion that extends in a protruding direction in which the guide member protrudes outward in a mounting state in which the liquid supply unit is mounted onto the liquid ejection apparatus, and that is configured to receive the guide member. At least a part of the receiving portion is located between the liquid supply port and the contact portion in a predetermined direction orthogonal to a direction in which the receiving portion extends.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: January 19, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Taku Ishizawa, Satoshi Shinada, Yoshiaki Shimizu, Noriyuki Fukasawa
  • Patent number: RE48556
    Abstract: A tube support member that puts a tube connected to an ink jet head and an ink tank in a bent state is provided. Accordingly, when a pulling force acts between the bent support member and the tube, a component force acting as contact force occurs at the surface that makes contact with the tube, and a high degree of friction is generated in response to this component force. The tube is thus strongly supported in a state in which the tube does not shift with the dimensions of the tube changing. Meanwhile, when the pulling force is released, the component force is also eliminated, and the tube is freed; the dimensions of the tube return to normal, and the tension is eliminated. An ink jet recording apparatus that prints using an ink jet head that is housed in a carriage is provided. The apparatus includes an ink tank that is provided outside of the carriage and is capable of being refilled.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 18, 2021
    Assignee: Seiko Epson Corporation
    Inventors: Taku Ishizawa, Yoshiaki Shimizu