Patents by Inventor Yusuke Hirasawa

Yusuke Hirasawa 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: 9399345
    Abstract: A waste liquid container is detachably mounted on a mounting unit which includes a discharge portion discharging a waste liquid and a projection to which a substrate connection portion is joined. The waste liquid container includes: a containing portion that is able to contain the waste liquid; a connection concave portion that is opened in a mounting direction; a circuit substrate that includes connection terminals electrically connected to the substrate connection portion and is joined to the connection concave portion; and a waste liquid introduction portion that is connected to the discharge portion. In the connection concave portion, one pair of guide portions guiding the projection is formed so that the connection terminals are interposed therebetween in a width direction intersecting the mounting direction. Of the pair of guide portions, one guide portion is disposed between the connection terminals and the waste liquid introduction portion in the width direction.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: July 26, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Yusuke Hirasawa
  • Publication number: 20160082736
    Abstract: A waste liquid container is detachably mounted on a mounting unit which includes a discharge portion discharging a waste liquid and a projection to which a substrate connection portion is joined. The waste liquid container includes: a containing portion that is able to contain the waste liquid; a connection concave portion that is opened in a mounting direction; a circuit substrate that includes connection terminals electrically connected to the substrate connection portion and is joined to the connection concave portion; and a waste liquid introduction portion that is connected to the discharge portion. In the connection concave portion, one pair of guide portions guiding the projection is formed so that the connection terminals are interposed therebetween in a width direction intersecting the mounting direction. Of the pair of guide portions, one guide portion is disposed between the connection terminals and the waste liquid introduction portion in the width direction.
    Type: Application
    Filed: December 2, 2015
    Publication date: March 24, 2016
    Inventors: Yusuke HIRASAWA, Yasuhiro OGURA, Taro TAKEKOSHI, Izumi NOZAWA
  • Patent number: 9233543
    Abstract: A waste liquid container is detachably mounted on a mounting unit which includes a discharge portion discharging a waste liquid and a projection to which a substrate connection portion is joined. The waste liquid container includes: a containing portion that is able to contain the waste liquid; a connection concave portion that is opened in a mounting direction; a circuit substrate that includes connection terminals electrically connected to the substrate connection portion and is joined to the connection concave portion; and a waste liquid introduction portion that is connected to the discharge portion. In the connection concave portion, one pair of guide portions guiding the projection is formed so that the connection terminals are interposed therebetween in a width direction intersecting the mounting direction. Of the pair of guide portions, one guide portion is disposed between the connection terminals and the waste liquid introduction portion in the width direction.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: January 12, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Yusuke Hirasawa, Yasuhiro Ogura, Taro Takekoshi, Izumi Nozawa
  • Publication number: 20150314605
    Abstract: A waste liquid container is detachably mounted on a mounting unit which includes a discharge portion discharging a waste liquid and a projection to which a substrate connection portion is joined. The waste liquid container includes: a containing portion that is able to contain the waste liquid; a connection concave portion that is opened in a mounting direction; a circuit substrate that includes connection terminals electrically connected to the substrate connection portion and is joined to the connection concave portion; and a waste liquid introduction portion that is connected to the discharge portion. In the connection concave portion, one pair of guide portions guiding the projection is formed so that the connection terminals are interposed therebetween in a width direction intersecting the mounting direction. Of the pair of guide portions, one guide portion is disposed between the connection terminals and the waste liquid introduction portion in the width direction.
    Type: Application
    Filed: April 29, 2015
    Publication date: November 5, 2015
    Inventors: Yusuke HIRASAWA, Yasuhiro OGURA, Taro TAKEKOSHI, Izumi NOZAWA
  • Patent number: 8425001
    Abstract: When a real absorption operation is performed many times as one maintenance operation, a starting position of a roller member when performing a real absorption operation is adjusted by performing an idle absorption operation on at least one side before and after each real absorption operation.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yusuke Hirasawa
  • Patent number: 8201927
    Abstract: A fluid ejecting apparatus, contains: an ejecting head having a plurality of nozzles for ejecting a fluid and having a laminated structure in which a flow passage plate, in which a passage for the fluid is formed, is provided via an adhesive, in which the adhesive contains an adhesion resin, to which a hydrophilic function agent that gives hydrophilicity to the adhesive is added in a proportion of from 0.25 wt % to 5.0 wt %.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: June 19, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Koji Morikoshi, Takashi Akase, Yusuke Hirasawa
  • Patent number: 8113633
    Abstract: A liquid ejecting head includes a passage unit made by laminating a plurality of plates including a first plate having a first through-hole with a first size and a second plate having a second through-hole with a second size which is larger than the first size. The first plate and the second plate are bonded with adhesive so that the first through-hole and the second through-hole in communication with each other. The affinity for the adhesive to bond to the inner peripheral surface of the second through-hole is set to be at least higher than the affinity for the adhesive to bond to the area around the opening of the first through-hole. Adhesive that flows out from between the first plate and the second plate at the time of bonding of the first plate and the second plate is guided to the inner peripheral surface of the second through-hole.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: February 14, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Yusuke Hirasawa, Haruhisa Uezawa
  • Publication number: 20110199428
    Abstract: When a real absorption operation is performed many times as one maintenance operation, a starting position of a roller member when performing a real absorption operation is adjusted by performing an idle absorption operation on at least one side before and after each real absorption operation.
    Type: Application
    Filed: February 10, 2011
    Publication date: August 18, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yusuke Hirasawa
  • Publication number: 20090244227
    Abstract: A fluid ejecting apparatus, contains: an ejecting head having a plurality of nozzles for ejecting a fluid and having a laminated structure in which a flow passage plate, in which a passage for the fluid is formed, is provided via an adhesive, in which the adhesive contains an adhesion resin, to which a lipophilic function agent that gives lipophilicity to the fluid is added in a proportion of from 0.25 wt % to 5.0 wt %.
    Type: Application
    Filed: March 26, 2009
    Publication date: October 1, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koji Morikoshi, Takashi Akase, Yusuke Hirasawa
  • Publication number: 20090195606
    Abstract: A liquid ejecting head includes a passage unit made by laminating a plurality of plates including a first plate having a first through-hole with a first size and a second plate having a second through-hole with a second size which is larger than the first size. The first plate and the second plate are bonded with adhesive so that the first through-hole and the second through-hole in communication with each other. The affinity for the adhesive to bond to the inner peripheral surface of the second through-hole is set to be at least higher than the affinity for the adhesive to bond to the area around the opening of the first through-hole. Adhesive that flows out from between the first plate and the second plate at the time of bonding of the first plate and the second plate is guided to the inner peripheral surface of the second through-hole.
    Type: Application
    Filed: January 29, 2009
    Publication date: August 6, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yusuke HIRASAWA, Haruhisa UEZAWA