Patents by Inventor Toshiaki Hirosawa
Toshiaki Hirosawa 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: 11685089Abstract: A manufacturing method of a liquid ejection head including manufacturing a flow path constituting member for supplying a liquid to an ejection module, the manufacturing a flow path constituting member including using a metal mold which is constituted of a fixed mold and a movable mold, the manufacturing a flow path constituting member including: a first step of molding a first member, a second member, and a third member independently at locations different from each other in the metal mold, the first member, the second member, and the third member constituting the flow path constituting member; a second step of joining the first member and the second member in a specific manner; and a third step of joining the second member and the third member in a specific manner.Type: GrantFiled: November 30, 2020Date of Patent: June 27, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Takuya Iwano, Yukuo Yamaguchi, Toshiaki Hirosawa, Hiromasa Amma
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Publication number: 20210170647Abstract: A manufacturing method of a liquid ejection head including manufacturing a flow path constituting member for supplying a liquid to an ejection module, the manufacturing a flow path constituting member including using a metal mold which is constituted of a fixed mold and a movable mold, the manufacturing a flow path constituting member including: a first step of molding a first member, a second member, and a third member independently at locations different from each other in the metal mold, the first member, the second member, and the third member constituting the flow path constituting member; a second step of joining the first member and the second member in a specific manner; and a third step of joining the second member and the third member in a specific manner.Type: ApplicationFiled: November 30, 2020Publication date: June 10, 2021Inventors: Takuya Iwano, Yukuo Yamaguchi, Toshiaki Hirosawa, Hiromasa Amma
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Patent number: 10870279Abstract: A method of manufacturing a liquid supply unit includes a first molding step and a second molding step. In a first molding step, a resin is injected into different positions inside a mold assembly and a first member having a first contact portion, a second member having a second contact portion and an intermediate passage member having a passage structure to connect the first contact portion to the second contact portion are molded. In a second molding step, the mold assembly is disassembled, a die slide mold disposed inside the mold assembly is moved for positioning the members. Then, the mold assembly is clamped again and a resin is injected into the mold assembly. The first contact portion and the second contact portion are respectively held on the same surfaces inside the mold assembly during a period from the first molding step to completion of the second molding step.Type: GrantFiled: November 8, 2017Date of Patent: December 22, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Soji Kondo, Yukuo Yamaguchi, Toshiaki Hirosawa, Hiromasa Amma, Takuya Iwano, Noriyasu Nagai
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Patent number: 10654269Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.Type: GrantFiled: June 12, 2018Date of Patent: May 19, 2020Assignee: Canon Kabushiki KaishaInventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
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Patent number: 10618280Abstract: A liquid ejection head includes an element substrate including an energy-generating element that applies ejection energy to liquid, a first electric wiring board electrically connected to the element substrate, and a second electric wiring board on which an integrated circuit element is mounted and which is electrically connected to the first electric wiring board. An electric signal is supplied to the integrated circuit element mounted on the second electric wiring board through the first electric wiring board, processed by the integrated circuit element, and supplied to the energy-generating element through the second electric wiring board and the first electric wiring board.Type: GrantFiled: June 12, 2018Date of Patent: April 14, 2020Assignee: Canon Kabushiki KaishaInventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
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Patent number: 10618327Abstract: A liquid ejection head unit is formed by arranging a plurality of recording element substrates in a first direction. Each recording element substrate has an ejection orifice from which a liquid is ejected. The liquid ejection head unit includes rail portions extending in the first direction and a protective member which is detachably fitted on the rail portions. The protective member is movable along the rail portions between a first position and a second position. The first position allows the protective member to cover whole surfaces of the plurality of recording element substrates. The second position allows the plurality of recording element substrates to be exposed so as to allow a liquid to be ejected from the ejection orifices.Type: GrantFiled: June 29, 2018Date of Patent: April 14, 2020Assignee: Canon Kabushiki KaishaInventors: Takuya Iwano, Toshiaki Hirosawa, Hiromasa Amma, Tomoki Tsuji, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Patent number: 10532574Abstract: A method of manufacturing a liquid ejecting method includes: a first step of injection molding passage members collectively constituting a passage for a liquid in the liquid ejecting head; a second step of moving the passage members to bring the passage members into contact with each other; and a third step of injecting a sealing material into a space between the passage members held in contact with each other, and filling the space with the sealing material. The sealing material is injected and filled, from a gate on a longitudinal side of the passage members, in a direction intersecting with a longitudinal direction of the passage members.Type: GrantFiled: October 31, 2017Date of Patent: January 14, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Takuya Iwano, Yukuo Yamaguchi, Toshiaki Hirosawa, Hiromasa Amma, Soji Kondo, Noriyasu Nagai
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Patent number: 10525711Abstract: A method of manufacturing a liquid ejecting head has a first molding step, a step of performing positioning and a second molding step. In the first molding step, a first member, a second member, and a third member are molded by injecting a resin at different locations inside of a set of a fixed mold, an intermediate movable mold, and a movable mold. In the step of performing positioning, the set is detached in a first direction and the intermediate movable mold and the movable mold are moved in a second direction. In the second molding step, a resin is injected to the inside of the set that is clamped to bond. During a period from the first molding step to completion of the second molding step, the first member, the second member, and the third member are held by insert mold pieces used for molding the members, respectively, in the first molding step.Type: GrantFiled: November 9, 2017Date of Patent: January 7, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Hiromasa Amma, Yukuo Yamaguchi, Toshiaki Hirosawa, Soji Kondo, Takuya Iwano, Noriyasu Nagai
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Patent number: 10507644Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.Type: GrantFiled: April 19, 2018Date of Patent: December 17, 2019Assignee: Canon Kabushiki KaishaInventors: Shogo Kawamura, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Yasuhiko Osaki, Takuya Iwano, Shin Ishimatsu
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Patent number: 10471728Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.Type: GrantFiled: June 1, 2018Date of Patent: November 12, 2019Assignee: Canon Kabushiki KaishaInventors: Genji Inada, Toshiaki Hirosawa, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Shin Ishimatsu, Takuya Iwano
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Patent number: 10391767Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.Type: GrantFiled: July 5, 2018Date of Patent: August 27, 2019Assignee: Canon Kabushiki KaishaInventors: Yasuhiko Osaki, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Takuya Iwano, Shin Ishimatsu
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Patent number: 10384457Abstract: A liquid ejection head unit includes a page-wide type liquid ejection head detachably attached to a liquid ejecting apparatus and a protective member detachably attached to the liquid ejection head. The liquid ejection head includes an ejection port surface on which ejection ports are provided. The liquid ejection head includes a first rail portion, the protective member includes a second rail portion along a longitudinal direction thereof, and the protective member is made to slide in a first direction along the longitudinal direction of the liquid ejection head and cover the ejection port surface. The protective member is attached to the liquid ejection head, and then the liquid ejection head and the protective member are moved in a second direction opposite to the first direction and are removed from the liquid ejecting apparatus.Type: GrantFiled: July 2, 2018Date of Patent: August 20, 2019Assignee: Canon Kabushiki KaishaInventors: Tomoki Tsuji, Toshiaki Hirosawa, Hiromasa Amma, Takuya Iwano, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Publication number: 20190009540Abstract: A liquid ejection head unit is formed by arranging a plurality of recording element substrates in a first direction. The recording element substrate has an ejection orifice from which a liquid is ejected. The liquid ejection head unit includes: rail portions extending in the first direction and a protective member which is detachably fitted on the rail portions. The protective member is movable along the rail portions between a first position and a second position. The first position allows the protective member to cover whole surfaces of the plurality of recording element substrates. The second position allows the plurality of recording element substrates to be exposed so as to allow a liquid to be ejected from the ejection orifice.Type: ApplicationFiled: June 29, 2018Publication date: January 10, 2019Inventors: Takuya Iwano, Toshiaki Hirosawa, Hiromasa Amma, Tomoki Tsuji, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Publication number: 20190009542Abstract: A liquid ejection head unit includes an ejection port surface on which an ejection port is provided, includes a page-wide type liquid ejection head detachably attached to a liquid ejecting apparatus and a protective member detachably attached to the liquid ejection head, the liquid ejection head includes a first rail portion, the protective member includes a second rail portion along a longitudinal direction thereof, the protective member is made to slide to a first direction along the longitudinal direction of the liquid ejection head and covers the ejection port surface, the protective member is attached to the liquid ejection head and then, the liquid ejection head and the protective member are moved in a second direction opposite to the first direction and are removed from the liquid ejecting apparatus.Type: ApplicationFiled: July 2, 2018Publication date: January 10, 2019Inventors: Tomoki Tsuji, Toshiaki Hirosawa, Hiromasa Amma, Takuya Iwano, Akira Kida, Tetsuji Kurata, Atsushi Kohnotoh
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Publication number: 20190009535Abstract: A page-wide type liquid ejection head includes a plurality of recording element substrates, each having an ejection port array including a plurality of ejection ports, each ejection port communicating with a pressure chamber including therein a recording element, and a liquid supply path for supplying a liquid to the pressure chamber. The liquid ejection head also includes a flow path member mounting the recording element substrates arranged thereon. The flow path member includes common supply flow paths and individual supply flow paths that connect the liquid supply path to the common supply flow paths, and the individual supply flow paths include portions running obliquely to the direction orthogonal to the longitudinal direction of the liquid ejection head.Type: ApplicationFiled: July 5, 2018Publication date: January 10, 2019Inventors: Yasuhiko Osaki, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Takuya Iwano, Shin Ishimatsu
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Publication number: 20190001674Abstract: The liquid ejection head 1 includes an element substrate 4 including an energy-generating element that applies ejection energy to liquid, a first electric wiring board 7 electrically connected to the element substrate 4, and a second electric wiring board 9 on which an integrated circuit element 10 is mounted and which is electrically connected to the first electric wiring board 7. An electric signal is supplied to the integrated circuit element 10 mounted on the second electric wiring board 9 through the first electric wiring board 7, processed by the integrated circuit element 10, and supplied to the energy-generating element through the second electric wiring board 9 and the first electric wiring board 7.Type: ApplicationFiled: June 12, 2018Publication date: January 3, 2019Inventors: Shin Ishimatsu, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Takuya Iwano
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Publication number: 20180361748Abstract: A page-wide liquid ejection head configured to be removably installed in a main body of a liquid ejection apparatus includes a connection part for liquid through which a liquid is supplied from the main body and an electrical connector through which an electric signal is supplied from the main body. In the liquid ejection head, the connection part for liquid and the electrical connector are located at one side of the liquid ejection head in the longitudinal direction and are provided to face different directions from each other.Type: ApplicationFiled: June 1, 2018Publication date: December 20, 2018Inventors: Genji Inada, Toshiaki Hirosawa, Hiromasa Amma, Shogo Kawamura, Yasuhiko Osaki, Shin Ishimatsu, Takuya Iwano
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Publication number: 20180304620Abstract: A liquid ejecting head including a print element substrate including an ejection opening for ejecting a liquid, a wiring member including wiring electrically connected to the print element substrate, a connection electrically connecting the print element substrate to the wiring member, a support member supporting the wiring member, a sealing material sealing the connection, and a cover member provided on the support member. In the liquid ejecting head, the wiring member is a strip-shaped member, and a portion of the wiring member provided on a surface of the support member that supports the wiring member is covered by the sealing material and the cover member.Type: ApplicationFiled: April 19, 2018Publication date: October 25, 2018Inventors: Shogo Kawamura, Toshiaki Hirosawa, Genji Inada, Hiromasa Amma, Yasuhiko Osaki, Takuya Iwano, Shin Ishimatsu
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Publication number: 20180141340Abstract: A method of manufacturing a liquid supply unit includes a first molding step and a second molding step. In a first molding step, a resin is injected into different positions inside a mold assembly and a first member having a first contact portion, a second member having a second contact portion and an intermediate passage member having a passage structure to connect the first contact portion to the second contact portion are molded. In a second molding step, the mold assembly is disassembled, a die slide mold disposed inside the mold assembly is moved for positioning the members. Then, the mold assembly is clamped again and a resin is injected into the mold assembly. The first contact portion and the second contact portion are respectively held on the same surfaces inside the mold assembly during a period from the first molding step to completion of the second molding step.Type: ApplicationFiled: November 8, 2017Publication date: May 24, 2018Inventors: Soji Kondo, Yukuo Yamaguchi, Toshiaki Hirosawa, Hiromasa Amma, Takuya Iwano, Noriyasu Nagai
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Publication number: 20180141341Abstract: A method of manufacturing a liquid ejecting head has a first molding step, a step of performing positioning and a second molding step. In the first molding step, a first member, a second member, and a third member are molded by injecting a resin at different locations inside of a set of a fixed mold, an intermediate movable mold, and a movable mold. In the step of performing positioning, the set is detached in a first direction and the intermediate movable mold and the movable mold are moved in a second direction. In the second molding step, a resin is injected to the inside of the set that is clamped to bond. During a period from the first molding step to completion of the second molding step, the first member, the second member, and the third member are held by insert mold pieces used for molding the members, respectively, in the first molding step.Type: ApplicationFiled: November 9, 2017Publication date: May 24, 2018Inventors: Hiromasa Amma, Yukuo Yamaguchi, Toshiaki Hirosawa, Soji Kondo, Takuya Iwano, Noriyasu Nagai