Patents by Inventor Katsuhiro Okubo

Katsuhiro Okubo 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: 20110242190
    Abstract: The circuit board holding section between the first and second holding members is sealed by an adhesive in an area other than an area where a connection wiring is connected to the circuit board, the first and second holding members are fixed to each other by engaging engaging claws, which are provided in two or more side surfaces at the outer circumference of one of the first and second holding members, with the other holding member, and the first and second holding members are fixed to each other by screw members.
    Type: Application
    Filed: March 11, 2011
    Publication date: October 6, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shigeki SUZUKI, Katsuhiro OKUBO
  • Publication number: 20110228021
    Abstract: A liquid ejecting head includes: a head body which ejects a liquid supplied from a liquid storing member via a liquid supply path; a first supply member which is provided with a first liquid supply path forming a part of the liquid supply path; a second supply member which is provided with a second liquid supply path communicating with the first liquid supply path and forming a part of the liquid supply path, and which supplies the liquid to the head body; and a filter which is sandwiched between the first and second liquid supply paths, wherein a sandwiching portion including the first and second supply members and sandwiching the filter includes an inclination portion that is inclined to the downstream side so as to face the outside of the liquid supply path. A liquid ejecting apparatus includes the liquid ejecting head.
    Type: Application
    Filed: January 20, 2011
    Publication date: September 22, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroyuki KOBAYASHI, Munehide KANAYA, Katsuhiro OKUBO, Nobuyoshi UJI, Kazuhide NAKAMURA
  • Patent number: 7905563
    Abstract: A liquid jetting apparatus and a liquid jetting method are achieved that can prevent unexpected landing position displacement relating to satellite droplets.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: March 15, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yue Gao, Katsuhiro Okubo
  • Publication number: 20110031641
    Abstract: There is provided a method of manufacturing a liquid ejecting head which includes a head main body having nozzles ejecting a liquid supplied via a liquid supply passage, a first supply member having a first liquid supply passage forming a part of the liquid supply passage, a second supply member disposed on a downstream side of the first supply member and having a second liquid supply passage communicating with the first liquid supply passage and forming a part of the liquid supply passage, a filter disposed between the first and second supply members so as to cross the liquid supply passage, and an integrally molded member fixing the first and second supply members by a resin in a state where the filter is nipped between the first and second supply members.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 10, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroyuki Kobayashi, Katsuhiro Okubo, Kazuhide Nakamura, Nobuyoshi Uji
  • Publication number: 20110030216
    Abstract: There is provided a method of manufacturing a liquid ejecting head which includes a head main body having nozzles ejecting a liquid supplied via a liquid supply passage, a first supply member having a first liquid supply passage forming a part of the liquid supply passage, a second supply member disposed on a downstream side of the first supply member and having a second liquid supply passage communicating with the first liquid supply passage and forming a part of the liquid supply passage, a filter disposed between the first and second supply members so as to cross the liquid supply passage, and an integrally molded member fixing the first and second supply members by a resin in a state where the filter is nipped between the first and second supply members.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 10, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hiroyuki Kobayashi, Katsuhiro Okubo, Kazuhide Nakamura, Nobuyoshi Uji
  • Publication number: 20110018942
    Abstract: A liquid ejecting head includes: a plurality of head main bodies in which nozzle openings are arranged and manifolds communicate with the nozzle openings; and a passage member which includes a plurality of passages supplying a liquid supplied from an upstream side to the plurality of manifolds of the head main bodies. The plurality of head main bodies is disposed so that the manifolds are arranged in a first direction. The plurality of passages of the passage member includes a passage group in which an outflow port communicating with the manifold is disposed in the first direction and an inflow port to which the liquid is supplied from the upstream side is disposed in a second direction intersecting the first direction.
    Type: Application
    Filed: July 7, 2010
    Publication date: January 27, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shigeki SUZUKI, Katsuhiro OKUBO
  • Patent number: 7871157
    Abstract: Provided is a liquid-jet apparatus which can suppress liquid consumption by preventing air that can turn into bubbles from entering a liquid introducing columnar body in replacement of a liquid storage member and thus reducing a frequency of execution of a cleaning operation for discharging the bubbles inside a liquid passage. An ink introducing needle in a printer includes: a needle-like protrusion having a tapered portion whose diameter is gradually increased toward its base from its tip; and a straight portion formed linearly and continuously from the tapered portion. In the tapered portion of the needle-like protrusion in the ink introducing needle, groove portions extending to an edge portion of the tapered portion are provided.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: January 18, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yasunori Koike, Katsuhiro Okubo, Noriaki Okazawa, Keiichi Kumagai, Takeshi Fujishiro
  • Publication number: 20100245474
    Abstract: A method for manufacturing a liquid flow passage unit that is disposed between a liquid supply source storing liquid and a head main body and that forms a part of a flow passage leading from the liquid supply source to the head main body, includes bringing a film member into contact with a protrusion formed on the edge of an opening of a flow passage for liquid formed in a main body member made of resin, so as to cover the opening with the film member, pressing the film member covering the opening toward the flow passage, so as to apply a predetermined tension to the film member, and integrally molding a sealing member by pouring resin on the edge of the tensioned film member, so as to fix the film member between the sealing member and the main body member.
    Type: Application
    Filed: March 24, 2010
    Publication date: September 30, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsuhiro OKUBO
  • Publication number: 20100245481
    Abstract: A liquid ejecting head unit includes a head body which discharges liquid droplets; a wiring substrate which stands in a predetermined direction different from the discharging direction of the liquid from the head body in order to supply a driving signal, which drives the head body, to the head body; and a liquid flow channel unit which is disposed at a position overlapping with the wiring substrate in the predetermined direction, is integrally combined with the head body so that the flow channel is in direct communication with the head body, and includes a pressure chamber having a damper function of which at least a portion of wall surface is formed of a film member.
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsuhiro OKUBO
  • Patent number: 7699418
    Abstract: A liquid jetting apparatus and a liquid jetting method are achieved that can prevent unexpected landing position displacement relating to satellite droplets.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: April 20, 2010
    Assignee: Seiko Epson Corporation
    Inventors: Yue Gao, Katsuhiro Okubo
  • Publication number: 20100079557
    Abstract: A liquid ejecting head includes: a passage forming board which is provided with pressure generating chambers respectively communicating with nozzle openings for ejecting a liquid; piezoelectric elements which are provided on one surface of the passage forming board to cause a pressure variation in the pressure generating chambers; terminals which are provided on the one surface of the passage forming board to be conductively connected to the piezoelectric elements and each have an inclined connection surface on a surface opposite to the passage forming board; and a wiring board which is electrically connected to the connection surfaces of the terminals and has a wiring layer supplying a driving signal for driving the piezoelectric elements. Each of the connection surfaces is higher on a side of the piezoelectric elements than on an opposite side of the piezoelectric elements with respect to a predetermined reference surface.
    Type: Application
    Filed: September 28, 2009
    Publication date: April 1, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsuhiro OKUBO
  • Publication number: 20100007688
    Abstract: A liquid jetting apparatus and a liquid jetting method are achieved that can prevent unexpected landing position displacement relating to satellite droplets.
    Type: Application
    Filed: September 21, 2009
    Publication date: January 14, 2010
    Applicant: Seiko Epson Corporation
    Inventors: Yue GAO, Katsuhiro OKUBO
  • Publication number: 20090231379
    Abstract: There is provided a liquid ejecting head including a plurality of pressure generating chambers, a first substrate having a reservoir unit, and a second substrate having a compliance unit, the second substrate being combined with one surface of the first substrate via an adhesive layer. The reservoir unit has a first area and a second area whose width in a direction perpendicular to the arrangement direction of the pressure generating chambers is smaller than a width of the first area, the compliance unit is provided to seal the reservoir unit and the surrounding of the compliance unit is fixed by the adhesive layer, and a width of the compliance unit corresponding to the second area of the reservoir unit is formed so as to be larger than the width of the second area.
    Type: Application
    Filed: March 12, 2009
    Publication date: September 17, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsuhiro Okubo
  • Publication number: 20090213189
    Abstract: There is provided a liquid ejecting head including a channel forming member in which a pressure generating chamber is provided, a piezoelectric element that is provided at one surface side of the channel forming member, a terminal portion electrically connected to the piezoelectric element; the terminal portion being provided at the one surface side of the channel forming member, a wiring substrate which has a wiring layer, and an adhesive layer for electrically connecting the wiring layer and the terminal portion and for combing the wiring substrate and the channel forming member, the adhesive layer being formed by an anisotropic conductive material. A gap layer that is electrically discontinuous with the terminal portion and the wiring layer is provided on at least one surface of the channel forming member and the wiring substrate in an area in which the adhesive layer is provided.
    Type: Application
    Filed: February 25, 2009
    Publication date: August 27, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Katsuhiro OKUBO
  • Publication number: 20090207216
    Abstract: A liquid ejecting head includes: a reservoir provided along a direction, the reservoir including a first area and a second area of a width smaller than that of the first area in a direction perpendicular to the direction in which the pressure generating chambers are parallelly-arranged; and compliance member provided in an area corresponding to the reservoir. The compliance member includes a first compliance section formed at one of the upper and lower surface sides of the reservoir and a second compliance section formed at the other of the upper and lower surface sides of the reservoir. The first compliance section is formed at an area corresponding to both the first area and the second area of the reservoir, and the second compliance section is not formed in at least an area corresponding to a part of the first area.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 20, 2009
    Applicant: Seiko Epson Corporation
    Inventor: Katsuhiro Okubo
  • Publication number: 20090195622
    Abstract: A liquid ejecting head includes a reservoir forming substrate provided with a reservoir serving as a common liquid chamber; in which at least a portion of a wall surface of the reservoir is an inclined surface, a lower side of the reservoir in a vertical direction is provided with a lower portion of which a width is wider than an upper portion of the reservoir in the vertical direction thanks to the inclined surface, a compliance portion which absorbs pressure of the reservoir is disposed at an area which faces the lower portion and has a shape corresponding to the lower portion, and the reservoir communicates with an upper portion of each of the pressure generating chambers in the vertical direction rather than a lower portion of each of pressure generating chambers.
    Type: Application
    Filed: February 6, 2009
    Publication date: August 6, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Katsuhiro Okubo
  • Patent number: 7537328
    Abstract: A liquid ejecting head includes a head main body including a plurality of nozzle openings that eject a liquid; a first supply channel that supplies the liquid from a reservoir unit containing the liquid to the head main body for each nozzle group of the head main body; a first filter disposed at a halfway position of the first supply channel; a filter chamber that is provided as an enlarged width portion for accommodating the first filter; a second supply channel that communicates with the upstream side of the filter chamber of the first supply channel and that communicates with the downstream side of the filter chamber; and a second filter that is provided on an opening of the second supply channel, the opening communicating with the upstream side of the filter chamber of the first supply channel.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: May 26, 2009
    Assignee: Seiko Epson Corporation
    Inventor: Katsuhiro Okubo
  • Patent number: 7490923
    Abstract: A conductive nozzle plate is formed with a nozzle orifice. An insulative layer is formed on a first face of the nozzle plate. A head body includes a pressure chamber adapted to contain liquid therein and a pressure generating element operable to cause pressure fluctuation in the liquid. The head body is attached to a second face of the nozzle plate so as to communicate the pressure chamber with the nozzle orifice. The second face of the nozzle plate and the head body are fixed to a head case. A conductive head cover covers a part of the first face of the nozzle plate while exposing the nozzle orifice. A part of the nozzle plate and the head cover directly come into contact with each other.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: February 17, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Hirokazu Shibuya, Yasunori Koike, Noriaki Okazawa, Katsuhiro Okubo, Gaku Ko, Tatsuo Akatsu, Takateru Yamashita
  • Patent number: 7467835
    Abstract: A liquid jetting apparatus and a liquid jetting method are achieved that can prevent unexpected landing position displacement relating to satellite droplets.
    Type: Grant
    Filed: March 17, 2005
    Date of Patent: December 23, 2008
    Assignee: Seiko Epson Corporation
    Inventors: Yue Gao, Katsuhiro Okubo
  • Publication number: 20080235947
    Abstract: A conductive nozzle plate is formed with a nozzle orifice. An insulative layer is formed on a first face of the nozzle plate. A head body includes a pressure chamber adapted to contain liquid therein and a pressure generating element operable to cause pressure fluctuation in the liquid. The head body is attached to a second face of the nozzle plate so as to communicate the pressure chamber with the nozzle orifice. The second face of the nozzle plate and the head body are fixed to a head case. A conductive head cover covers a part of the first face of the nozzle plate while exposing the nozzle orifice. A part of the nozzle plate and the head cover directly come into contact with each other.
    Type: Application
    Filed: May 8, 2008
    Publication date: October 2, 2008
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hirokazu SHIBUYA, Yasunori KOIKE, Noriaki OKAZAWA, Katsuhiro OKUBO, Gaku KO, Tatsuo AKATSU, Takateru YAMASHITA