Patents by Inventor Shuichi Tamatsukuri
Shuichi Tamatsukuri 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).
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Patent number: 10696048Abstract: A method of manufacturing an inkjet head substrate is provided. The inkjet head substrate includes an ink supply port having a through portion and a non-through portion, and the non-through portion is disposed at a position closer than the through portion to the energy generating element. The method includes disposing a mask having an opening that has a relatively large opening-width portion and a relatively small opening-width portion. The method also includes forming the through portion in the substrate at a position corresponding to the relatively large opening-width portion and the non-through portion in the substrate at a position corresponding to the relatively small opening-width portion by performing reactive ion etching on the substrate through the opening of the mask in one operation.Type: GrantFiled: November 8, 2018Date of Patent: June 30, 2020Assignee: Canon Kabushiki KaishaInventors: Takayuki Kamimura, Masataka Kato, Hiroshi Higuchi, Atsunori Terasaki, Shuichi Tamatsukuri
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Patent number: 10583656Abstract: A liquid discharge head includes a substrate that is provided with a supply passage having an opening; an energy generating element that is disposed on a surface of the substrate; an electric wiring layer; an insulation layer; and a discharge port member that forms a discharge port. The insulation layer has an end portion adjacent to the opening of the supply passage and set back from an edge of the opening of the supply passage toward a side where the energy generating element is disposed. The electric wiring layer includes a plurality of electric wiring layers layered on each other.Type: GrantFiled: June 20, 2018Date of Patent: March 10, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Masataka Kato, Toshiyasu Sakai, Atsunori Terasaki, Takayuki Kamimura, Shuichi Tamatsukuri, Hiroshi Higuchi
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Publication number: 20190160820Abstract: A method of manufacturing an inkjet head substrate is provided. The inkjet head substrate includes an ink supply port having a through portion and a non-through portion, and the non-through portion is disposed at a position closer than the through portion to the energy generating element. The method includes disposing a mask having an opening that has a relatively large opening-width portion and a relatively small opening-width portion. The method also includes forming the through portion in the substrate at a position corresponding to the relatively large opening-width portion and the non-through portion in the substrate at a position corresponding to the relatively small opening-width portion by performing reactive ion etching on the substrate through the opening of the mask in one operation.Type: ApplicationFiled: November 8, 2018Publication date: May 30, 2019Inventors: Takayuki Kamimura, Masataka Kato, Hiroshi Higuchi, Atsunori Terasaki, Shuichi Tamatsukuri
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Publication number: 20190001675Abstract: A liquid discharge head includes a substrate that is provided with. a supply passage having an opening; an energy generating element that is disposed on a surface of the substrate; an electric wiring layer; an insulation layer; and a discharge port member that forms a discharge port. The insulation layer has an end portion adjacent to the opening of the supply passage and set back from an edge of the opening of the supply passage toward a side where the energy generating element is disposed. The electric wiring layer includes a plurality of electric wiring layers layered on each other.Type: ApplicationFiled: June 20, 2018Publication date: January 3, 2019Inventors: Masataka Kato, Toshiyasu Sakai, Atsunori Terasaki, Takayuki Kamimura, Shuichi Tamatsukuri, Hiroshi Higuchi
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Patent number: 9975338Abstract: A method for manufacturing a liquid ejection head substrate, in which a heat storage layer, a pair of electrodes extending from the surface of the heat storage layer toward the back surface, a heat-generating resistor layer in contact with the pair of electrodes and the surface of the heat storage layer, and a first cover layer configured to cover the heat-generating resistor layer are stacked, includes the steps of etching the heat-generating resistor layer and the first cover layer by using a mask disposed on a substrate including the heat-generating resistor layer and the first cover layer, removing the mask, and forming a second cover layer configured to cover an end portion of the heat-generating resistor layer in that order.Type: GrantFiled: July 22, 2016Date of Patent: May 22, 2018Assignee: Canon Kabushiki KaishaInventors: Takuya Hatsui, Shuichi Tamatsukuri, Souta Takeuchi, Kenji Takahashi, Soichiro Nagamochi, Shinya Iwahashi
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Patent number: 9751301Abstract: Even if electrostatic discharge occurs, dielectric breakdown of an insulating layer for covering an element on a base substrate is inhibited. A substrate for an ink jet recording head includes: a base substrate including an element configured to apply energy for ejecting ink to ink and an insulating protective layer for covering the element; an ejection orifice forming member including an insulating first member for forming an ink flow path for supplying ink to the element and a second member including an ejection orifice surface having ejection orifices provided therein; and a columnar conductive member extending between the second member and the base substrate in a direction intersecting the ejection orifice surface.Type: GrantFiled: April 25, 2016Date of Patent: September 5, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Kenji Takahashi, Shinya Iwahashi, Soichiro Nagamochi, Souta Takeuchi, Takuya Hatsui, Shuichi Tamatsukuri
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Publication number: 20170021623Abstract: A method for manufacturing a liquid ejection head substrate, in which a heat storage layer, a pair of electrodes extending from the surface of the heat storage layer toward the back surface, a heat-generating resistor layer in contact with the pair of electrodes and the surface of the heat storage layer, and a first cover layer configured to cover the heat-generating resistor layer are stacked, includes the steps of etching the heat-generating resistor layer and the first cover layer by using a mask disposed on a substrate including the heat-generating resistor layer and the first cover layer, removing the mask, and forming a second cover layer configured to cover an end portion of the heat-generating resistor layer in that order.Type: ApplicationFiled: July 22, 2016Publication date: January 26, 2017Inventors: Takuya Hatsui, Shuichi Tamatsukuri, Souta Takeuchi, Kenji Takahashi, Soichiro Nagamochi, Shinya Iwahashi
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Publication number: 20160325544Abstract: Even if electrostatic discharge occurs, dielectric breakdown of an insulating layer for covering an element on a base substrate is inhibited. A substrate for an ink jet recording head includes: a base substrate including an element configured to apply energy for ejecting ink to ink and an insulating protective layer for covering the element; an ejection orifice forming member including an insulating first member for forming an ink flow path for supplying ink to the element and a second member including an ejection orifice surface having ejection orifices provided therein; and a columnar conductive member extending between the second member and the base substrate in a direction intersecting the ejection orifice surface.Type: ApplicationFiled: April 25, 2016Publication date: November 10, 2016Inventors: Kenji Takahashi, Shinya Iwahashi, Soichiro Nagamochi, Souta Takeuchi, Takuya Hatsui, Shuichi Tamatsukuri
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Patent number: 9381741Abstract: An inkjet printhead substrate includes a base plate, a heat storage layer placed on the base plate, a heat-generating resistive layer which is placed on the heat storage layer and which includes an electrothermal transducing portion, a wiring layer electrically connected to the heat-generating resistive layer, and an insulating protective layer covering the heat-generating resistive layer and the wiring layer. The heat storage layer includes a porous cyclic silazane film formed by a vapor phase process.Type: GrantFiled: July 8, 2015Date of Patent: July 5, 2016Assignee: Canon Kabushiki KaishaInventors: Souta Takeuchi, Soichiro Nagamochi, Shuichi Tamatsukuri, Sadayoshi Sakuma, Kenji Takahashi
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Patent number: 9333746Abstract: An ink jet recording head substrate is provided which includes a base substrate, a heat accumulation layer overlying the base substrate, a heating resistor layer including an electrothermal conversion portion and overlying the heat accumulation layer, a wiring layer electrically connected to the heating resistor layer, and an insulating protective layer covering the heating resistor layer and the wiring layer. The heat accumulation layer includes a porous cyclic siloxane film.Type: GrantFiled: July 1, 2015Date of Patent: May 10, 2016Assignee: Canon Kabushiki KaishaInventors: Soichiro Nagamochi, Shuichi Tamatsukuri, Souta Takeuchi, Kenji Takahashi, Sadayoshi Sakuma, Hirokazu Komuro, Makoto Sakurai, Yuzuru Ishida, Takeru Yasuda
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Publication number: 20160009088Abstract: An ink jet recording head substrate is provided which includes a base substrate, a heat accumulation layer overlying the base substrate, a heating resistor layer including an electrothermal conversion portion and overlying the heat accumulation layer, a wiring layer electrically connected to the heating resistor layer, and an insulating protective layer covering the heating resistor layer and the wiring layer. The heat accumulation layer includes a porous cyclic siloxane film.Type: ApplicationFiled: July 1, 2015Publication date: January 14, 2016Inventors: Soichiro Nagamochi, Shuichi Tamatsukuri, Souta Takeuchi, Kenji Takahashi, Sadayoshi Sakuma, Hirokazu Komuro, Makoto Sakurai, Yuzuru Ishida, Takeru Yasuda
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Publication number: 20160009090Abstract: An inkjet printhead substrate includes a base plate, a heat storage layer placed on the base plate, a heat-generating resistive layer which is placed on the heat storage layer and which includes an electrothermal transducing portion, a wiring layer electrically connected to the heat-generating resistive layer, and an insulating protective layer covering the heat-generating resistive layer and the wiring layer. The heat storage layer includes a porous cyclic silazane film formed by a vapor phase process.Type: ApplicationFiled: July 8, 2015Publication date: January 14, 2016Inventors: Souta Takeuchi, Soichiro Nagamochi, Shuichi Tamatsukuri, Sadayoshi Sakuma, Kenji Takahashi
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Patent number: 9216575Abstract: A recording-element substrate includes an ejection port configured to eject liquid; a heating resistance element configured to generate thermal energy for ejecting the liquid from the ejection port; and a drive circuit configured to drive the heating resistance element. The heating resistance element includes a heating resistor layer and three pairs of electrodes provided for the heating resistor layer. The drive circuit forms a heating area that generates thermal energy in the heating resistor layer by selectively using two or more of the electrodes.Type: GrantFiled: April 10, 2015Date of Patent: December 22, 2015Assignee: Canon Kabushiki KaishaInventors: Shuichi Tamatsukuri, Makoto Sakurai, Sadayoshi Sakuma, Masaya Uyama
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Publication number: 20150290935Abstract: A recording-element substrate includes an ejection port configured to eject liquid; a heating resistance element configured to generate thermal energy for ejecting the liquid from the ejection port; and a drive circuit configured to drive the heating resistance element. The heating resistance element includes a heating resistor layer and three pairs of electrodes provided for the heating resistor layer. The drive circuit forms a heating area that generates thermal energy in the heating resistor layer by selectively using two or more of the electrodes.Type: ApplicationFiled: April 10, 2015Publication date: October 15, 2015Inventors: Shuichi Tamatsukuri, Makoto Sakurai, Sadayoshi Sakuma, Masaya Uyama