Patents by Inventor Zentaro Tamenaga

Zentaro Tamenaga 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: 9315041
    Abstract: The present invention provides a pressure regulating unit capable of applying a stable pressure so as to supply liquid, a liquid supplying apparatus, and a liquid ejecting apparatus. An ink communication path allows an ink introducing chamber communicating with an ink inlet and a pressure chamber communicating with an ink outlet to communicate with each other. A valve including a valve body and a valve seat adjusts the opening degree of the ink communication path. An urging member applies, to the valve, an urging force that acts in a direction in which the ink communication path is closed and increases according to an decrease in pressure in the ink introducing chamber.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: April 19, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Zentaro Tamenaga, Takatsugu Moriya
  • Patent number: 9254658
    Abstract: A liquid ejection head includes, a first support member including a flow path for supplying liquid and an opening communicating with the flow path; at least one second support member that includes an individual liquid chamber communicating with the opening and arranged on the first support member along the flow path; and a recording element substrate including an energy-generating element for generating energy for ejecting the liquid, and a supply port for supplying the liquid to the energy-generating element, the supply port communicating with the individual liquid chamber, the recording element substrate being supported by a back surface of the second support member with respect to an opposite surface thereof facing the first support member.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: February 9, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuhiro Yamada, Shuzo Iwanaga, Ryohei Goto, Takatsugu Moriya, Zentaro Tamenaga
  • Patent number: 9254649
    Abstract: A liquid ejection head including: a support member, a plurality of printing element boards arranged linearly on the support member, an electric wiring member fixed to the support member, and configured to transmit an electrical signal necessary to eject a liquid to the plurality of printing element boards, a plurality of conductive members arranged in an arranging direction of the plurality of printing element boards, and configured to electrically connect the plurality of printing element boards to the electric wiring member, and a thermosetting sealing member extending in the arranging direction and covering the conductive members, connecting points of the printing element boards with the conductive members, and connecting points of the electric wiring member with the conductive members, wherein the sealing member is divided at, at least one place in the arranging direction.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: February 9, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takatsugu Moriya, Shuzo Iwanaga, Kazuhiro Yamada, Takuto Moriguchi, Zentaro Tamenaga, Akira Yamamoto
  • Patent number: 9248647
    Abstract: A liquid ejection head includes an electrical wiring substrate and a printing element substrate, wherein the position variation of the printing element substrate due to curing of a sealing agent is eliminated. Specifically, a gap between two support members is covered with the electrical wiring substrate so as to be able to prevent a sealing agent from flowing into the gap. As a result, even in the case where the size of the gap varies due to the variation in the dimensional accuracy and/or the variation in the assembly accuracy, the sealing agent will not enter this gap, and therefore the shape thereof can be made substantially uniform regardless of the positions. This results in a substantially uniform stress in curing and contracting of the sealing agent, and the variation in the mounting position of the printing element substrate can be suppressed.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: February 2, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuzo Iwanaga, Zentaro Tamenaga, Kazuhiro Yamada, Takuto Moriguchi, Takatsugu Moriya
  • Patent number: 9221257
    Abstract: Provided is a liquid ejection head including a support member; a liquid chamber member being fixed onto the support member through an adhesive and including a liquid chamber configured to store liquid therein; and a recording element substrate being fixed onto the liquid chamber member through the adhesive and including an ejection orifice from which the liquid is ejected and a recording element configured to generate ejection energy. The support member and the liquid chamber member have different coefficients of linear expansion. The surface of the liquid chamber member on the recording element substrate side includes a first region on which the adhesive for fixing the recording element substrate is applied; and a second region being a region other than the first region. The first region has a parallelogram shape, and the second region has a rectangular shape.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: December 29, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takatsugu Moriya, Kazuhiro Yamada, Zentaro Tamenaga, Takuto Moriguchi, Shingo Okushima, Akira Yamamoto
  • Patent number: 9216578
    Abstract: A liquid ejection head includes a recording element substrate including an electrode at a first side portion; an electrical wiring substrate having a wire line; a connecting portion connecting the electrode and the wire line; and a sealing material provided between the first side portion of the recording element substrate and the electrical wiring substrate. A first line and a second line are out of alignment in a direction along a side of the recording element substrate. The first line orthogonal to the side passes through a center of gravity of the recording element substrate. A second line passes through a center of a part covered with the sealing material and extends parallel to the first line. Of a part of the sealing material, a first area on the first line side has a larger volume than that of a second area opposite to the first line side.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: December 22, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Zentaro Tamenaga, Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Takatsugu Moriya, Akira Yamamoto
  • Publication number: 20150328892
    Abstract: A liquid ejection head includes a recording element substrate including an electrode at a first side portion; an electrical wiring substrate having a wire line; a connecting portion connecting the electrode and the wire line; and a sealing material provided between the first side portion of the recording element substrate and the electrical wiring substrate. A first line and a second line are out of alignment in a direction along a side of the recording element substrate. The first line orthogonal to the side passes through a center of gravity of the recording element substrate. A second line passes through a center of a part covered with the sealing material and extends parallel to the first line. Of a part of the sealing material, a first area on the first line side has a larger volume than that of a second area opposite to the first line side.
    Type: Application
    Filed: May 11, 2015
    Publication date: November 19, 2015
    Inventors: Zentaro Tamenaga, Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Takatsugu Moriya, Akira Yamamoto
  • Publication number: 20150328894
    Abstract: A liquid ejection head including a recording element substrate at one side portion of which an electrode is provided, an electric wiring board arranged opposing to the one side portion of the recording element substrate, a connecting member connecting the electrode provided at the one side portion of the recording element substrate to an electrode terminal provided on the electric wiring board, a sealing member formed across the one side portion of the recording element substrate and the electric wiring board so as to cover the connecting member, and a dummy sealing member provided so as to cover an opposite side portion on the side opposite to the one side portion of the recording element substrate.
    Type: Application
    Filed: April 27, 2015
    Publication date: November 19, 2015
    Inventors: Zentaro Tamenaga, Takuto Moriguchi, Shuzo Iwanaga, Takatsugu Moriya, Kazuhiro Yamada, Akira Yamamoto
  • Publication number: 20150328890
    Abstract: Provided is a liquid ejection head including a support member; a liquid chamber member being fixed onto the support member through an adhesive and including a liquid chamber configured to store liquid therein; and a recording element substrate being fixed onto the liquid chamber member through the adhesive and including an ejection orifice from which the liquid is ejected and a recording element configured to generate ejection energy. The support member and the liquid chamber member have different coefficients of linear expansion. The surface of the liquid chamber member on the recording element substrate side includes a first region on which the adhesive for fixing the recording element substrate is applied; and a second region being a region other than the first region. The first region has a parallelogram shape, and the second region has a rectangular shape.
    Type: Application
    Filed: April 28, 2015
    Publication date: November 19, 2015
    Inventors: Takatsugu Moriya, Kazuhiro Yamada, Zentaro Tamenaga, Takuto Moriguchi, Shingo Okushima, Akira Yamamoto
  • Publication number: 20150321476
    Abstract: A liquid ejection head including: a support member, a plurality of printing element boards arranged linearly on the support member, an electric wiring member fixed to the support member, and configured to transmit an electrical signal necessary to eject a liquid to the plurality of printing element boards, a plurality of conductive members arranged in an arranging direction of the plurality of printing element boards, and configured to electrically connect the plurality of printing element boards to the electric wiring member, and a thermosetting sealing member extending in the arranging direction and covering the conductive members, connecting points of the printing element boards with the conductive members, and connecting point of the electric wiring member with the conductive members, wherein the sealing member is divided at at least one place in the arranging direction.
    Type: Application
    Filed: May 8, 2015
    Publication date: November 12, 2015
    Inventors: Takatsugu Moriya, Shuzo Iwanaga, Kazuhiro Yamada, Takuto Moriguchi, Zentaro Tamenaga, Akira Yamamoto
  • Publication number: 20150314606
    Abstract: A pressure regulating unit capable of suitably regulating pressure to be applied to liquid, a liquid supplying apparatus, and a liquid ejecting apparatus are provided. An ink communication path allows an ink introducing chamber communicating with an ink inlet and a pressure chamber communicating with an ink outlet to communicate with each other. A part of the pressure chamber is formed of a flexible film. A valve including a valve body and a valve seat adjusts an opening degree of the ink communication path. An urging member applies, to the valve, a first urging force acting in a direction in which the ink communication path is closed. An urging member applies, to the film, a second urging force that is greater than the first urging force and acts in a displacement direction in which the volume of the pressure chamber is reduced.
    Type: Application
    Filed: April 14, 2015
    Publication date: November 5, 2015
    Inventors: Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Zentaro Tamenaga, Takatsugu Moriya
  • Publication number: 20150314607
    Abstract: In the present invention, an air bubble residing in a filter chamber is purged at a high speed without inducing liquid ejection deficiency at a liquid ejection head. A filter chamber is divided into a first filter chamber and a second filter chamber via a filter. A pump circulates ink through an ink tube and a bypass path between an ink tank and the first filter chamber. A valve capable of regulating a flow of the ink is provided at the ink tube that allows the second filter chamber and a print head to communicate with each other.
    Type: Application
    Filed: April 21, 2015
    Publication date: November 5, 2015
    Inventors: Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Zentaro Tamenaga, Takatsugu Moriya
  • Publication number: 20150314608
    Abstract: The present invention provides a pressure regulating unit capable of applying a stable pressure so as to supply liquid, a liquid supplying apparatus, and a liquid ejecting apparatus. An ink communication path allows an ink introducing chamber communicating with an ink inlet and a pressure chamber communicating with an ink outlet to communicate with each other. A valve including a valve body and a valve seat adjusts the opening degree of the ink communication path. An urging member applies, to the valve, an urging force that acts in a direction in which the ink communication path is closed and increases according to an increase in pressure in the ink introducing chamber.
    Type: Application
    Filed: April 21, 2015
    Publication date: November 5, 2015
    Inventors: Takuto Moriguchi, Shuzo Iwanaga, Kazuhiro Yamada, Zentaro Tamenaga, Takatsugu Moriya
  • Patent number: 9126409
    Abstract: A liquid discharge head includes a plurality of first support members, a second support member that is jointed to the first support members and is provided with openings, a plurality of printing element substrates that are each positioned in the opening and are jointed on the first support members to discharge liquid, and an electrical wiring substrate that is jointed on the second support member and is provided with wiring for applying electrical signals on each of printing elements of the plurality of printing element substrates, wherein a linear expansion coefficient of the second support member is lower than that of the electrical wiring substrate.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: September 8, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Zentaro Tamenaga, Shuzo Iwanaga, Kazuhiro Yamada, Takuto Moriguchi, Takatsugu Moriya
  • Publication number: 20150239238
    Abstract: Provided is a liquid ejection head including: a plurality of recording element substrates including energy generating elements that generate ejection energy for ejecting liquid from ejection orifices; a first support member that supports the plurality of recording element substrates such that the recording element substrates are arranged in one or more lines on a main surface of the first support member; and a second support member that supports the first support member on a surface opposite to the main surface. A first thermal resistance concerning an in-plane direction parallel to the main surface, of a region between the recording element substrates in the first support member is higher than a second thermal resistance concerning a thickness direction of the second support member, of a projection region that overlaps with each recording element substrate in the second support member.
    Type: Application
    Filed: February 6, 2015
    Publication date: August 27, 2015
    Inventors: Kazuhiro YAMADA, Takuto Moriguchi, Zentaro Tamenaga, Shuzo Iwanaga, Takatsugu Moriya
  • Publication number: 20150130875
    Abstract: A liquid discharge head includes a plurality of first support members, a second support member that is jointed to the first support members and is provided with openings, a plurality of printing element substrates that are each positioned in the opening and are jointed on the first support members to discharge liquid, and an electrical wiring substrate that is jointed on the second support member and is provided with wiring for applying electrical signals on each of printing elements of the plurality of printing element substrates, wherein a linear expansion coefficient of the second support member is lower than that of the electrical wiring substrate.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 14, 2015
    Inventors: Zentaro TAMENAGA, Shuzo lwanaga, Kazuhiro Yamada, Takuto Moriguchi, Takatsugu Moriya
  • Publication number: 20150124025
    Abstract: A liquid ejection head, including a first support member including a flow path for supplying liquid and an opening communicating with the flow path; at least one second support member that includes an individual liquid chamber communicating with the opening and is arranged on the first support member along the flow path; and a recording element substrate including an energy-generating element for generating energy for ejecting the liquid, and a supply port for supplying the liquid to the energy-generating element, the supply port communicating with the individual liquid chamber, the recording element substrate being supported by a back surface of the second support member with respect to an opposite surface thereof facing the first support member.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 7, 2015
    Inventors: Kazuhiro Yamada, Shuzo Iwanaga, Ryohei Goto, Takatsugu Moriya, Zentaro Tamenaga
  • Publication number: 20150085018
    Abstract: A liquid ejection head includes a plurality of ejection members, each having an ejection port for ejecting liquid and a liquid chamber for supplying liquid to the ejection port, a base substrate carrying the plurality of ejection members arranged thereon, the base substrate being provided with a common flow channel for supplying liquid to the plurality of liquid chambers, and a plurality of branch ports each allowing the common flow channel to communicate with the plurality of liquid chambers. Each of the branch ports is provided with a notch portion at an upstream side thereof as viewed in the flow direction of liquid flowing through the common flow channel.
    Type: Application
    Filed: September 4, 2014
    Publication date: March 26, 2015
    Inventors: Kazuhiro YAMADA, Takatsugu Moriya, Zentaro Tamenaga
  • Publication number: 20150029265
    Abstract: A liquid ejection head includes an electrical wiring substrate and a printing element substrate, wherein the position variation of the printing element substrate due to curing of a sealing agent is eliminated. Specifically, a gap between two support members is covered with the electrical wiring substrate so as to be able to prevent a first sealing agent from flowing into this gap. As a result, even in the case where the size of the gap varies due to the variation in the dimensional accuracy and/or the variation in the assembly accuracy, the first sealing agent will not enter this gap, and therefore the shape thereof can be made substantially uniform regardless of the positions. This results in a substantially uniform stress in curing and contracting of the first sealing agent, and the variation in the mounting position of the printing element substrate can be suppressed.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 29, 2015
    Inventors: Shuzo IWANAGA, Zentaro Tamenaga, Kazuhiro Yamada, Takuto Moriguchi, Takatsugu Moriya