Patents by Inventor Maki MATSUI

Maki MATSUI 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: 10730294
    Abstract: A liquid-discharge-head substrate includes a first covering portion covering a first heating resistance element and having electrical conductivity, a second covering portion covering a second heating resistance element and having electrical conductivity, a fuse, and a common wiring line for electrically connecting the first and second covering portions. The common wiring line is electrically connected with the first covering portion via the fuse. The common wiring line and the fuse each have a multilayer structure including a stack of a plurality of conductive layers including a first conductive layer and a second conductive layer that is less oxidizable than the first conductive layer.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: August 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsubasa Funabashi, Takahiro Matsui, Yoshinori Misumi, Maki Kato, Yuzuru Ishida
  • Patent number: 10710361
    Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: July 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Misumi, Maki Kato, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Publication number: 20200187501
    Abstract: The present invention provides a compound represented by formula (I) or salt thereof (in the formula, A1 and A2 each independently represents a nitrogen atom or the like, B1, B2, B3 and B4 each independently represents a carbon atom or nitrogen atom, X1 represents an unsubstituted or substituted C1-6 alkyl group or the like, n represents a number of X1 and represents an integer of 0-4, R1 represents a halogeno group or the like, R2 represents an unsubstituted or substituted C1-6 alkyl group or the like, m represents a number of the oxide group bonding with the nitrogen atom which does not bond with R2 on the imidazole ring, and represents 0 or 1, R3 represents a hydrogen atom or the like, Ar represents an unsubstituted or substituted C6-10 aryl group.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Hikaru Aoyama, Maki MATSUI, Takao IWASA, Kazushige FUJII, Tomomi KOBAYASHI, Keita SAKANISHI
  • Patent number: 10675866
    Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 9, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Misumi, Maki Kato, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Publication number: 20200140414
    Abstract: A compound represented by a formula (I) or a salt thereof: wherein A1 represents CR1 or a nitrogen atom; A2 represents CR2 or a nitrogen atom; A3 represents CR3 or a nitrogen atom, provided that two or more of A1 to A3 do not represent nitrogen atoms at the same time; R1, R2 and R3 each independently represent a hydrogen atom or the like; B1 represents CH or a nitrogen atom; R4 represents a substituted or unsubstituted C1-6 alkyl group or the like; R5 represents a substituted or unsubstituted C1-6 alkylthio group or the like; and R6 represents a substituted or unsubstituted C1-6 alkyl group or the like.
    Type: Application
    Filed: June 22, 2018
    Publication date: May 7, 2020
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Keita SAKANISHI, Hikaru AOYAMA, Norifumi SAKIYAMA, Takao IWASA, Daisuke USHIJIMA, Maki MATSUI
  • Patent number: 10632748
    Abstract: A liquid ejection head includes: a substrate for the liquid ejection head that includes a heating resistance element, a covering portion that covers the heating resistance element, and a fuse part that electrically connects the covering portion and a common wiring to each other; and a flow path forming member. The flow path forming member is provided with a through-opening or a concave portion that is concave from a surface of the flow path forming member on a side of the substrate for the liquid ejection head, at a position that overlaps at least a part of the fuse part.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: April 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Maki Kato, Yoshinori Misumi, Takahiro Matsui, Yuzuru Ishida
  • Publication number: 20200114643
    Abstract: Provided are a liquid ejection apparatus, an ejection control method, and a liquid ejection head capable of suppressing shortening of the life of a liquid ejection head and maintaining stable ejection operation. For this purpose, voltage is applied to upper electrodes and counter electrodes so as to make the voltage at the upper electrodes lower than the voltage at the counter electrodes before heat generating resistive elements are driven, and voltage is applied to the upper electrodes and the counter electrodes so as to make the voltage at the upper electrodes higher than the voltage at the counter electrodes at the same time as or after the start of driving of the heat generating resistive elements.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 16, 2020
    Inventors: Maki Kato, Yoshinori Misumi, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Patent number: 10548316
    Abstract: The present invention provides a compound represented by formula (I), (in the formula, A1 and A2 each independently represents a carbon atom or a nitrogen atom; X1 represents an unsubstituted or substituted C1-6 alkyl group or the like; n represents an integer of 0 to 4; R1 represents an unsubstituted or substituted C1-6 alkylthio group or the like; B1 and B4 each independently represent a carbon atom, a nitrogen atom or the like; R2 and R3 each independently represent a hydrogen atom, a halogeno group or the like; Ar represents an unsubstituted or substituted C6-10 aryl group or the like) or a salt thereof, and a harmful organism control agent including thereof.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: February 4, 2020
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Hikaru Aoyama, Maki Matsui, Keita Sakanishi, Takao Iwasa, Tomomi Kobayashi, Koichi Hirata
  • Patent number: 10538085
    Abstract: Influence of transform of quality to an entire liquid discharge head is suppressed when a heat resistor and a covering portion are electrically connected to each other. To address this problem, a liquid discharge head substrate includes fuse portions for respective heat resistor arrays.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: January 21, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshinori Misumi, Yuzuru Ishida, Maki Kato, Takahiro Matsui
  • Publication number: 20190329549
    Abstract: A liquid ejection head substrate including a base including a surface having a first and second heat generation elements, a conductive first covering portion, a conductive second covering portion, an insulating layer disposed between the first heat generation element and the first covering portion, and between the second heat generation element and the second covering portion, a fuse portion, first wiring electrically connected to the first covering portion through the fuse portion, the first wiring electrically connecting the first covering portion to the second covering portion, a terminal electrically connected to the first covering portion and the second covering portion through the first wiring, second wiring, and electric connection portions provided between the fuse portion and the terminal in a current path passing through the first wiring, the electric connection portions parallelly connecting the first and second wiring to each other.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 31, 2019
    Inventors: Yuzuru Ishida, Maki Kato, Yoshinori Misumi, Tsubasa Funabashi, Takahiro Matsui
  • Patent number: 10434777
    Abstract: A liquid ejecting head maintains stable ejecting operations without causing kogation. To achieve such operations, the liquid ejecting head includes, in its liquid chamber, a first electrode placed so as to cover a heating resistor, a second electrode placed at a position different from that of the first electrode, and a third electrode. In a case where the heating resistor is driven, a voltage is applied between the first electrode and the second electrode so that the first electrode has the same polarity as that of a predetermined liquid component, and the second electrode has the opposite polarity. In a case where the heating resistor is not driven, a voltage is applied between the second electrode and the third electrode so that the second electrode has the same polarity as that of the predetermined component, and the third electrode has the opposite polarity.
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: October 8, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Maki Kato, Yoshinori Misumi, Takahiro Matsui, Norihiro Yoshinari
  • Patent number: 10421272
    Abstract: A control method of a liquid ejection head, in which the liquid ejection head having first and second heat generating resistors that generate thermal energy for ejecting liquid, includes first covering portion covers the first heat generating resistor. A second covering portion is electrically connected to the first covering portion and covering the second heat generating resistor. An insulating layer is provided between the first heat generating resistor and the first covering portion and between the second heat generating resistor and the second covering portion. Surface potentials are set of the first and second covering portions to be equal to or less than a ground potential in a state where drive voltage is not applied to the first and second heat generating resistors, is accomplished in accordance with application of drive voltage to at least either the first heat generating resistor or the second heat generating resistor.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuzuru Ishida, Yoshinori Misumi, Maki Kato, Takeru Yasuda, Norihiro Yoshinari, Takahiro Matsui
  • Publication number: 20190255848
    Abstract: The liquid discharge head substrate includes a first covering portion that covers the first heat generation element and that has conductivity, a second covering portion that covers the second heat generation element and that has conductivity, an insulative layer disposed between the first heat generation element and the first covering portion and between the second heat generation element and the second covering portion, a fuse portion provided on the substrate on a side on which the first covering portion is provided, common wiring for electrically coupling the first covering portion and the second covering portion, the common wiring coupled with the first covering portion via the fuse portion, and a cover layer including at least silicon and carbon and covering the fuse portion.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 22, 2019
    Inventors: Maki Kato, Yoshinori Misumi, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Publication number: 20190255850
    Abstract: A liquid ejection head includes: a substrate for the liquid ejection head that includes a heating resistance element, a covering portion that covers the heating resistance element, and a fuse part that electrically connects the covering portion and a common wiring to each other; and a flow path forming member. The flow path forming member is provided with a through-opening or a concave portion that is concave from a surface of the flow path forming member on a side of the substrate for the liquid ejection head, at a position that overlaps at least a part of the fuse part.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 22, 2019
    Inventors: Maki Kato, Yoshinori Misumi, Takahiro Matsui, Yuzuru Ishida
  • Publication number: 20190255844
    Abstract: A liquid-discharge-head substrate includes a first covering portion covering a first heating resistance element and having electrical conductivity, a second covering portion covering a second heating resistance element and having electrical conductivity, a fuse, and a common wiring line for electrically connecting the first and second covering portions. The common wiring line is electrically connected with the first covering portion via the fuse. The common wiring line and the fuse each have a multilayer structure including a stack of a plurality of conductive layers including a first conductive layer and a second conductive layer that is less oxidizable than the first conductive layer.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 22, 2019
    Inventors: Tsubasa Funabashi, Takahiro Matsui, Yoshinori Misumi, Maki Kato, Yuzuru Ishida
  • Publication number: 20190185459
    Abstract: A compound represented by Formula (I), or a salt thereof: wherein, R1 represents an unsubstituted or substituted C1-6 alkylthio group, or the like; A1 represents a nitrogen atom or CH; A2 represents a nitrogen atom or CR2; R2 and R3 each independently represents a hydrogen atom, an unsubstituted or substituted C6-10 aryl group, an unsubstituted or substituted 3- to 6-membered heterocyclyl group, or the like; B1 and B2 each independently represents a nitrogen atom or CR5, with the proviso that B1 and B2 do not represent CR5 at the same time, wherein R5 represents a hydrogen atom, an unsubstituted or substituted C1-6 alkyl group, or the like; R4 represents an unsubstituted or substituted C1-6 alkyl group, or the like, and R4 binds to any one of nitrogen atoms forming an imidazole ring or a triazole ring; and Ar represents an unsubstituted or substituted C6-10 aryl group or the like.
    Type: Application
    Filed: September 13, 2017
    Publication date: June 20, 2019
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Keita SAKANISHI, Takao IWASA, Hikaru AOYAMA, Norifumi SAKIYAMA, Daisuke USHIJIMA, Maki MATSUI, Tomomi KOBAYASHI
  • Publication number: 20180289006
    Abstract: The present invention provides a compound represented by formula (I) or salt thereof (in the formula, A1 and A2 each independently represents a nitrogen atom or the like, B1, B2, B3 and B4 each independently represents a carbon atom or nitrogen atom, X1 represents an unsubstituted or substituted C1-6 alkyl group or the like, n represents a number of X1 and represents an integer of 0-4, R1 represents a halogeno group or the like, R2 represents an unsubstituted or substituted C1-6 alkyl group or the like, m represents a number of the oxide group bonding with the nitrogen atom which does not bond with R2 on the imidazole ring, and represents 0 or 1, R3 represents a hydrogen atom or the like, Ar represents an unsubstituted or substituted C6-10 aryl group.
    Type: Application
    Filed: June 11, 2018
    Publication date: October 11, 2018
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Hikaru Aoyama, Maki MATSUI, Takao IWASA, Kazushige FUJII, Tomomi KOBAYASHI, Keita SAKANISHI
  • Patent number: 10021880
    Abstract: The present invention provides a compound represented by formula (I) or salt thereof (in the formula, A1 and A2 each independently represents a nitrogen atom or the like, B1, B2, B3 and B4 each independently represents a carbon atom or nitrogen atom, X1 represents an unsubstituted or substituted C1-6 alkyl group or the like, n represents a number of X1 and represents an integer of 0-4, R1 represents a halogeno group or the like, R2 represents an unsubstituted or substituted C1-6 alkyl group or the like, m represents a number of the oxide group bonding with the nitrogen atom which does not bond with R2 on the imidazole ring, and represents 0 or 1, R3 represents a hydrogen atom or the like, Ar represents an unsubstituted or substituted C6-10 aryl group.
    Type: Grant
    Filed: August 11, 2015
    Date of Patent: July 17, 2018
    Assignee: Nippon Soda Co., Ltd.
    Inventors: Hikaru Aoyama, Maki Matsui, Takao Iwasa, Kazushige Fujii, Tomomi Kobayashi, Keita Sakanishi
  • Publication number: 20180160686
    Abstract: The present invention provides a compound represented by formula (I), (in the formula, A1 and A2 each independently represents a carbon atom or a nitrogen atom; X1 represents an unsubstituted or substituted C1-6 alkyl group or the like; n represents an integer of 0 to 4; R1 represents an unsubstituted or substituted C1-6 alkylthio group or the like; B1 and B4 each independently represent a carbon atom, a nitrogen atom or the like; R2 and R3 each independently represent a hydrogen atom, a halogeno group or the like; Ar represents an unsubstituted or substituted C6-10 aryl group or the like) or a salt thereof, and a harmful organism control agent including thereof.
    Type: Application
    Filed: June 17, 2016
    Publication date: June 14, 2018
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Hikaru AOYAMA, Maki MATSUI, Keita SAKANISHI, Takao IWASA, Tomomi KOBAYASHI, Koichi HIRATA
  • Publication number: 20170223958
    Abstract: The present invention provides a compound represented by formula (I) or salt thereof (in the formula, A1 and A2 each independently represents a nitrogen atom or the like, B1, B2, B3 and B4 each independently represents a carbon atom or nitrogen atom, X1 represents an unsubstituted or substituted C1-6 alkyl group or the like, n represents a number of X1 and represents an integer of 0-4, R1 represents a halogeno group or the like, R2 represents an unsubstituted or substituted C1-6 alkyl group or the like, m represents a number of the oxide group bonding with the nitrogen atom which does not bond with R2 on the imidazole ring, and represents 0 or 1, R3 represents a hydrogen atom or the like, Ar represents an unsubstituted or substituted C6-10 aryl group.
    Type: Application
    Filed: August 11, 2015
    Publication date: August 10, 2017
    Applicant: Nippon Soda Co., Ltd.
    Inventors: Hikaru AOYAMA, Maki MATSUI, Takao IWASA, Kazushige FUJII, Tomomi KOBAYASHI, Keita SAKANISHI