Patents by Inventor Takashi Koase

Takashi Koase 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: 11951744
    Abstract: A switching mechanism includes a first rotating body that performs forward rotation and reverse rotation by receiving a driving force transmitted from a driving source; and a second rotating body having convex portions provided on an outer circumference at intervals. The first rotating body has an engagement portion configured to move along the outer circumference of the second rotating body. When the first rotating body rotates in a forward direction, engagement of the engagement portion with the convex portion causes rotation of the second rotating body in the forward direction together with the first rotating body. When the first rotating body rotates in a reverse direction, the engagement portion moves along the outer circumference of the second rotating body so that the second rotating body does not rotate in the reverse direction. A first interval, which is at least one of the intervals, is larger than other intervals.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: April 9, 2024
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Koase
  • Patent number: 11780236
    Abstract: A liquid ejecting apparatus includes a liquid ejecting head that ejects liquid from a nozzle, a liquid storage portion having a storage chamber configured to store the liquid supplied from a liquid supply source to the liquid ejecting head, and a carriage on which the liquid ejecting head and the liquid storage portion are mounted and configured to reciprocate in a scanning direction. The liquid ejecting apparatus includes a discharge flow path configured to discharge air in an upper part of the storage chamber, a coupling portion configured to be coupled to and separated from a coupled portion of the discharge flow path, and a negative pressure generating portion that applies a negative pressure to the coupling portion. When the carriage moves to a predetermined position, the coupling portion is coupled to the coupled portion of the discharge flow path.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: October 10, 2023
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Koase
  • Patent number: 11325389
    Abstract: A liquid ejecting apparatus including a liquid ejecting head that ejects a liquid, a liquid storage portion that stores the liquid, a supply flow path that communicates the liquid ejecting head and the liquid storage portion with each other, and an air chamber that is coupled to the supply flow path through a plurality of flow paths. The supply flow path includes a filter. The plurality of flow paths are, in the supply flow path, connected upstream of the filter, and the air chamber is positioned at a position higher than the filter when in a posture during use.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: May 10, 2022
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Koase, Yuta Komatsu
  • Patent number: 10730307
    Abstract: Various defects that occur when a water-repellent or defoaming layer is formed on a contact portion of a liquid container are reduced. A method for manufacturing a liquid container for containing a liquid includes: (a) preparing a pre-formation liquid container in which a surface layer has not been formed; (b) bringing an aqueous solution obtained by adding water to one of a defoaming agent and a water-repellent agent into contact with a surface of a contact portion with which the liquid is brought into contact, of the pre-formation liquid container; and (c) drying, after the step (b), the contact portion to form the surface layer that is formed of one of the defoaming agent and the water-repellent agent on a surface of the contact portion.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: August 4, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yasunori Koike, Takashi Koase, Satsuki Hayashi
  • Patent number: 10723134
    Abstract: A liquid tank includes a liquid supply portion, a first liquid chamber, a liquid communication flow path and an air communication flow path. The liquid communication flow path includes an upstream end which is connected to the first liquid chamber, a rising flow path which is located on a downstream side with respect to the upstream end and which extends upward in a mounting state, a lowering flow path which is located on the downstream side with respect to the rising flow path and which extends downward in the mounting state and a downstream end which is located on the downstream side with respect to the lowering flow path and which is connected to the liquid supply portion. In the mounting state, the liquid supply portion is located lower than the downstream end and extends downward toward a liquid supply port.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: July 28, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takashi Koase, Naomi Kimura
  • Patent number: 10618297
    Abstract: A tank includes: a liquid chamber; an air introduction inlet; a liquid inlet; a liquid outlet; a liquid communication path; a filter; and an exterior wall forming the liquid chamber and including: an upper wall; a bottom wall; a first side wall; and a second side wall positioned farther away from a liquid ejection head than the first side wall is in the in-use state. The liquid communication path has: a first liquid communication path on an outer surface side of the bottom wall; and a second liquid communication path provided on an outer surface side of the first side wall and communicating with the first liquid communication path. The liquid outlet and the filter are positioned at an end part of the first liquid communication path near the second side wall. The liquid outlet is positioned in the liquid communication path near the upper wall.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: April 14, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hideki Okumura, Takashi Koase
  • Patent number: 10525722
    Abstract: Provided is a liquid tank in which air bubbles are less likely to remain in a valve mechanism provided in an on-carriage-type liquid tank. The liquid tank has a liquid supply portion, a first liquid chamber, a second liquid chamber that can contain the liquid to be supplied to the first liquid chamber, and a valve mechanism that is arranged between the first liquid chamber and the second liquid chamber, and the valve mechanism has, inside an exterior wall constituting the valve mechanism, a channel member, a biasing member, a valve body, and a rod from an upstream side of flow of the liquid in the stated order, the channel member is provided inside the biasing member, and includes a first channel in which the liquid can pass, and the exterior wall and the biasing member form a second channel through which the liquid can pass therebetween.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: January 7, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yusuke Hirasawa, Takashi Koase, Shoma Kudo
  • Publication number: 20190176476
    Abstract: A tank includes: a liquid chamber; an air introduction inlet; a liquid inlet; a liquid outlet; a liquid communication path; a filter; and an exterior wall forming the liquid chamber and including: an upper wall; a bottom wall; a first side wall; and a second side wall positioned farther away from a liquid ejection head than the first side wall is in the in-use state. The liquid communication path has: a first liquid communication path on an outer surface side of the bottom wall; and a second liquid communication path provided on an outer surface side of the first side wall and communicating with the first liquid communication path. The liquid outlet and the filter are positioned at an end part of the first liquid communication path near the second side wall. The liquid outlet is positioned in the liquid communication path near the upper wall.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 13, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hideki OKUMURA, Takashi Koase
  • Publication number: 20190143707
    Abstract: Provided is a liquid tank in which air bubbles are less likely to remain in a valve mechanism provided in an on-carriage-type liquid tank. The liquid tank has a liquid supply portion, a first liquid chamber, a second liquid chamber that can contain the liquid to be supplied to the first liquid chamber, and a valve mechanism that is arranged between the first liquid chamber and the second liquid chamber, and the valve mechanism has, inside an exterior wall constituting the valve mechanism, a channel member, a biasing member, a valve body, and a rod from an upstream side of flow of the liquid in the stated order, the channel member is provided inside the biasing member, and includes a first channel in which the liquid can pass, and the exterior wall and the biasing member form a second channel through which the liquid can pass therebetween.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Applicant: Seiko Epson Corporation
    Inventors: Yusuke HIRASAWA, Takashi Koase, Shoma Kudo
  • Patent number: 10286676
    Abstract: A recording apparatus includes: a recording head that performs recording; a carriage that has a recording head on the bottom and is movable in a width direction intersecting a medium transport direction; at least one ink tank loaded on the carriage, above the recording head, the ink tank storing ink to be supplied to the recording head and having a filling port from which ink can be poured from a refilling container. The ink tank has, at least in one portion thereof, a level checking portion formed of a transparent material through which the liquid level in the liquid container can be viewed. The carriage has a first viewing portion through which the level checking portion of the ink tank can be viewed.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: May 14, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Naomi Kimura, Shoma Kudo, Takashi Koase
  • Publication number: 20180345678
    Abstract: A liquid tank includes a liquid supply portion, a first liquid chamber, a liquid communication flow path and an air communication flow path. The liquid communication flow path includes an upstream end which is connected to the first liquid chamber, a rising flow path which is located on a downstream side with respect to the upstream end and which extends upward in a mounting state, a lowering flow path which is located on the downstream side with respect to the rising flow path and which extends downward in the mounting state and a downstream end which is located on the downstream side with respect to the lowering flow path and which is connected to the liquid supply portion. In the mounting state, the liquid supply portion is located lower than the downstream end and extends downward toward a liquid supply port.
    Type: Application
    Filed: May 29, 2018
    Publication date: December 6, 2018
    Applicant: Seiko Epson Corporation
    Inventors: Takashi Koase, Naomi Kimura
  • Patent number: 10112399
    Abstract: A liquid jet apparatus comprises a liquid jet head, a carriage carrying the liquid jet head in a side-to-side direction, a liquid flow channel, and a liquid container in fluid communication with the liquid jet head through the liquid flow channel. The liquid container includes a liquid containing chamber arranged along a front/back direction orthogonal to the side-to-side direction; a liquid outlet port, from which the liquid contained in the liquid containing chamber flows to the liquid flow channel; and a liquid inlet port, through which the liquid is injected into the liquid containing chamber. The liquid inlet port has an end surface that does not face in a vertical direction relative to a normal posture of the apparatus.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: October 30, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Shoma Kudo, Takashi Koase, Toshiya Okada, Yasunori Koike, Tetsuya Takamoto, Nobutaka Suzuki, Satoshi Tamai, Toru Nakazawa, Katsutomo Tsukahara, Masayuki Kanazawa, Naofumi Mimura, Keigo Iizawa, Yutaka Kobayashi
  • Publication number: 20180215160
    Abstract: Various defects that occur when a water-repellent or defoaming layer is formed on a contact portion of a liquid container are reduced. A method for manufacturing a liquid container for containing a liquid includes: (a) preparing a pre-formation liquid container in which a surface layer has not been formed; (b) bringing an aqueous solution obtained by adding water to one of a defoaming agent and a water-repellent agent into contact with a surface of a contact portion with which the liquid is brought into contact, of the pre-formation liquid container; and (c) drying, after the step (b), the contact portion to form the surface layer that is formed of one of the defoaming agent and the water-repellent agent on a surface of the contact portion.
    Type: Application
    Filed: January 30, 2018
    Publication date: August 2, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yasunori Koike, Takashi Koase, Satsuki Hayashi
  • Publication number: 20160159099
    Abstract: A liquid jet apparatus comprises a liquid jet head, a carriage carrying the liquid jet head in a side-to-side direction, a liquid flow channel, and a liquid container in fluid communication with the liquid jet head through the liquid flow channel. The liquid container includes a liquid containing chamber arranged along a front/back direction orthogonal to the side-to-side direction; a liquid outlet port, from which the liquid contained in the liquid containing chamber flows to the liquid flow channel; and a liquid inlet port, through which the liquid is injected into the liquid containing chamber. The liquid inlet port has an end surface that does not face in a vertical direction relative to a normal posture of the apparatus.
    Type: Application
    Filed: January 29, 2016
    Publication date: June 9, 2016
    Inventors: Shoma Kudo, Takashi Koase, Toshiya Okada, Yasunori Koike, Tetsuya Takamoto, Nobutaka Suzuki, Satoshi Tamai, Toru Nakazawa, Katsutomo Tsukahara, Masayuki Kanazawa, Naofumi Mimura, Keigo Iizawa, Yutaka Kobayashi
  • Patent number: 9290001
    Abstract: A liquid container includes an ink chamber containing an ink to be supplied via a tube to a liquid ejecting head consuming the ink; an outlet port from which the ink contained in the ink chamber flows to the tube side; an injection port through which the ink can be injected into the ink chamber; and an air intake port taking air into the ink chamber from a further vertically upper position than a liquid level of the ink when the ink is contained in the ink chamber. If the ink equal to 5% of containing capacity containable in the ink chamber flows from the outlet port, the liquid container has an area where a fluctuation range of the liquid level of the ink inside the ink chamber becomes 5% or less of the cubic root of the containing capacity.
    Type: Grant
    Filed: June 10, 2015
    Date of Patent: March 22, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Shoma Kudo, Takashi Koase, Toshiya Okada, Yasunori Koike, Tetsuya Takamoto, Nobutaka Suzuki, Satoshi Tamai, Toru Nakazawa, Katsutomo Tsukahara, Masayuki Kanazawa, Naofumi Mimura, Keigo Iizawa, Yutaka Kobayashi
  • Publication number: 20150306882
    Abstract: A liquid container includes an ink chamber containing an ink to be supplied via a tube to a liquid ejecting head consuming the ink; an outlet port from which the ink contained in the ink chamber flows to the tube side; an injection port through which the ink can be injected into the ink chamber; and an air intake port taking air into the ink chamber from a further vertically upper position than a liquid level of the ink when the ink is contained in the ink chamber. If the ink equal to 5% of containing capacity containable in the ink chamber flows from the outlet port, the liquid container has an area where a fluctuation range of the liquid level of the ink inside the ink chamber becomes 5% or less of the cubic root of the containing capacity.
    Type: Application
    Filed: June 10, 2015
    Publication date: October 29, 2015
    Inventors: Shoma Kudo, Takashi Koase, Toshiya Okada, Yasunori Koike, Tetsuya Takamoto, Nobutaka Suzuki, Satoshi Tamai, Toru Nakazawa, Katsutomo Tsukahara, Masayuki Kanazawa, Naofumi Mimura, Keigo Iizawa, Yutaka Kobayashi
  • Patent number: 9120932
    Abstract: An ink set used for an ink jet recording method, in which a reactive solution and a color ink composition are adhered to a recording medium to realize recording, contains a reactive solution containing a polyvalent metal salt, and a first color ink composition at least containing a coloring material, a sparingly water-soluble 1,2-alkanediol, a surfactant and water.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: September 1, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Koase
  • Patent number: 9120324
    Abstract: An ink jet recording method using ink selected from a group including (A) black ink containing black pigment, (B) mixed color black ink containing black and color pigments, and (C) color ink containing color pigment, in which an ink glossiness at 60° is increased in the order of black ink (A), mixed color black ink (B), and color ink (C), the target recording surface glossiness at 60° in a target recording medium is 40 or more, and at least one of the following is satisfied: (1) A black image is formed using at least a plurality of types of the color ink of (C) and a color image is formed using the color ink of (C), and (2) A black image is formed using the mixed color black ink of (B) and a color image is formed using the color ink of (C).
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: September 1, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiko Azami, Takashi Koase, Hiroshi Mukai
  • Patent number: 9085173
    Abstract: An ink jet recording method includes using at least a first ink composition containing a color material and a second ink composition containing a resin as well as substantially not containing a color material, including: a first recording step recording the first ink composition onto a medium to be recorded; a second recording step recording the second ink composition onto the image; a second drying step of drying the image at a first temperature, which is performed during execution of the second recording step or thereafter; and a third drying step of drying the image at a second temperature which exceeds the first temperature after the second drying step; in which, the second ink composition does not substantially contain an aprotic polar solvent, and the heat deformation temperature of the resin exceeds the first temperature and is lower than the second temperature.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: July 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Takashi Koase
  • Patent number: 9079413
    Abstract: A liquid container includes an ink chamber containing an ink to be supplied via a tube to a liquid ejecting head consuming the ink; an outlet port from which the ink contained in the ink chamber flows to the tube side; an injection port through which the ink can be injected into the ink chamber; and an air intake port taking air into the ink chamber from a further vertically upper position than a liquid level of the ink when the ink is contained in the ink chamber. If the ink equal to 5% of containing capacity containable in the ink chamber flows from the outlet port, the liquid container has an area where a fluctuation range of the liquid level of the ink inside the ink chamber becomes 5% or less of the cubic root of the containing capacity.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: July 14, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Shoma Kudo, Takashi Koase, Toshiya Okada, Yasunori Koike, Tetsuya Takamoto, Nobutaka Suzuki, Satoshi Tamai, Toru Nakazawa, Katsutomo Tsukahara, Masayuki Kanazawa, Naofumi Mimura, Keigo Iizawa, Yutaka Kobayashi