Patents by Inventor Takatsugu Moriya
Takatsugu Moriya 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: 10421276Abstract: A printing element substrate includes a substrate, an energy generating element, and an ejection-port formed member. The energy generating element is disposed on one surface of the substrate and configured to generate energy for use in ejecting liquid. The ejection-port formed member includes ejection ports that eject the liquid. A protrusion protruding toward inside of each of the ejection ports is provided on an inner surface of the ejection port. In a surface of the ejection-port formed member remote from the substrate, a tip portion of the protrusion is positioned closer to the substrate than an outer periphery of the ejection port.Type: GrantFiled: May 15, 2017Date of Patent: September 24, 2019Assignee: Canon Kabushiki KaishaInventors: Akiko Saito, Shintaro Kasai, Yoshiyuki Nakagawa, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Ayako Iwasaki, Tomoki Ishiwata, Tomohiro Sato
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Publication number: 20190263138Abstract: A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.Type: ApplicationFiled: May 13, 2019Publication date: August 29, 2019Inventors: Yoshiyuki Nakagawa, Shintaro Kasai, Shuzo Iwanaga, Akiko Hammura, Koichi Ishida, Takatsugu Moriya
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Publication number: 20190232653Abstract: A recording element board includes a discharge orifice configured to discharge liquid, a pressure chamber communicating with the discharge orifice, a recording element configured to generate thermal energy to cause bubbling of the liquid, the recording element being disposed in the pressure chamber facing the discharge orifice, and a substrate on which the recording element is formed. When the recording element is driven and the liquid of within the pressure chamber is discharged, a generated bubble communicates with the atmosphere. A discharge orifice projection region where the discharge orifice has been projected on the substrate includes a region includes a region extending beyond a heat-generating region projection region where the heat-generating region of the recording element has been projected on the substrate, the outline of the discharge orifice projection region is circumscribed by the outline of the heat-generating region projection region.Type: ApplicationFiled: April 4, 2019Publication date: August 1, 2019Inventors: Takatsugu Moriya, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Hammura, Koichi Ishida, Tatsuya Yamada, Shinji Kishikawa, Takayuki Sekine, Shuzo Iwanaga
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Publication number: 20190232665Abstract: A liquid discharge apparatus includes a liquid discharge head including a discharge port configured to discharge liquid and a discharge port surface provided with the discharge port. A head cleaning member including a contact portion contacts the discharge port surface, and is configured to cause the contact portion to contact the discharge port surface and to move relative to the discharge port surface in order to clean adherents attached to the discharge port surface. The discharge port includes a plurality of protrusion portions extending toward a discharge port inner side. The contact portion includes a fiber, and the fiber in the contact portion includes a portion having a size greater than a minimum protrusion distance among protrusion distances between the protrusion portions.Type: ApplicationFiled: January 10, 2019Publication date: August 1, 2019Inventors: Tomoki Ishiwata, Takatsugu Moriya, Shinya Asano, Kanto Kurasawa, Ryosuke Araki
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Patent number: 10336091Abstract: A liquid discharge head includes: a substrate, where a recording element is disposed; and a discharge orifice forming member, where a discharge orifice, facing the recording element, and configured to discharge the liquid, is formed. The liquid discharge head has a pressure chamber, a first liquid channel configured to supply liquid to the pressure chamber, and a second liquid channel configured to recover liquid from the pressure chamber. The substrate has a liquid supply channel connected to the first liquid channel to supply liquid to the first liquid channel, and a liquid recovery channel connected to the second liquid channel, to recover liquid from the second liquid channel. Pressure at an inlet portion of the liquid supply channel is higher than pressure at an outlet portion of the liquid recovery channel, and a flow velocity of liquid within the pressure chamber is 3 to 140 mm/s.Type: GrantFiled: December 29, 2016Date of Patent: July 2, 2019Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Nakagawa, Shintaro Kasai, Shuzo Iwanaga, Akiko Saito, Koichi Ishida, Takatsugu Moriya
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Patent number: 10293607Abstract: A recording element board includes a discharge orifice configured to discharge liquid, a pressure chamber communicating with the discharge orifice, a recording element configured to generate thermal energy to cause bubbling of the liquid, the recording element being disposed in the pressure chamber facing the discharge orifice, and a substrate on which the recording element is formed. When the recording element is driven and the liquid of within the pressure chamber is discharged, a generated bubble communicates with the atmosphere. A discharge orifice projection region where the discharge orifice has been projected on the substrate includes a region includes a region extending beyond a heat-generating region projection region where the heat-generating region of the recording element has been projected on the substrate, the outline of the discharge orifice projection region is circumscribed by the outline of the heat-generating region projection region.Type: GrantFiled: January 3, 2017Date of Patent: May 21, 2019Assignee: CANON KABUSHIKI KAISHAInventors: Takatsugu Moriya, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Koichi Ishida, Tatsuya Yamada, Shinji Kishikawa, Takayuki Sekine, Shuzo Iwanaga
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Publication number: 20190111678Abstract: A liquid discharge head includes a recording element configured to generate thermal energy and a discharge orifice disposed at a position facing the recording element. A bubble is generated in liquid by the thermal energy, liquid between the bubble and the discharge orifice is discharged from the discharge orifice by the pressure of the generated bubble, and the bubble communicates with the atmosphere on the outside of the discharge orifice.Type: ApplicationFiled: December 17, 2018Publication date: April 18, 2019Inventors: Yoshiyuki Nakagawa, Shintaro Kasai, Akiko Hammura, Shinji Kishikawa, Takayuki Sekine, Shuzo Iwanaga, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada
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Patent number: 10201972Abstract: A recording element substrate includes: a substrate on which a plurality of energy generating elements that generate energy used for ejecting liquid are arranged side by side, an ejection port forming member in which ejection ports are formed at positions corresponding to the plurality of energy generating elements, a plurality of supply passages which are channels extending in a thickness direction of the substrate and through which liquid is supplied to the energy generating elements, and a support member that is formed between the substrate and the ejection port forming member and supports the ejection port forming member, in which supply ports that are apertures of the plurality of supply passages are linearly arranged side by side on the substrate, and a plurality of support members are provided side by side between adjacent supply ports on the substrate in a direction in which the supply ports are aligned.Type: GrantFiled: May 17, 2017Date of Patent: February 12, 2019Assignee: Canon Kabushiki KaishaInventors: Akiko Saito, Shintaro Kasai, Yoshiyuki Nakagawa, Takatsugu Moriya, Koichi Ishida, Shinji Kishikawa, Takayuki Sekine, Shuzo Iwanaga, Tatsuya Yamada
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Patent number: 10195848Abstract: A liquid discharge head includes a recording element configured to generate thermal energy and a discharge orifice disposed at a position facing the recording element. A bubble is generated in liquid by the thermal energy, liquid between the bubble and the discharge orifice is discharged from the discharge orifice by the pressure of the generated bubble, and the bubble communicates with the atmosphere on the outside of the discharge orifice.Type: GrantFiled: December 30, 2016Date of Patent: February 5, 2019Assignee: Canon Kabushiki KaishaInventors: Yoshiyuki Nakagawa, Shintaro Kasai, Akiko Saito, Shinji Kishikawa, Takayuki Sekine, Shuzo Iwanaga, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada
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Publication number: 20190023001Abstract: A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 ?m or less.Type: ApplicationFiled: September 27, 2018Publication date: January 24, 2019Inventors: Takatsugu Moriya, Shuzo Iwanaga, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Hammura, Tatsuya Yamada, Tomohiro Sato, Ayako Iwasaki, Tomoki Ishiwata, Koichi Ishida
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Patent number: 10183490Abstract: A discharge port array is inclined to a second direction B at an angle ? that satisfies a relation of tan ?=d2/(N×d1), where d1 is a distance between discharge ports within the discharge port array in the second direction B, and d2 is a distance between two adjacent discharge ports within each group in a first direction.Type: GrantFiled: August 30, 2017Date of Patent: January 22, 2019Assignee: Canon Kabushiki KaishaInventors: Tomohiro Sato, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Shingo Okushima
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Patent number: 10112387Abstract: A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 ?m or less.Type: GrantFiled: July 20, 2017Date of Patent: October 30, 2018Assignee: Canon Kabushiki KaishaInventors: Takatsugu Moriya, Shuzo Iwanaga, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Tatsuya Yamada, Tomohiro Sato, Ayako Iwasaki, Tomoki Ishiwata, Koichi Ishida
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Patent number: 10040288Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.Type: GrantFiled: February 6, 2018Date of Patent: August 7, 2018Assignee: Canon Kabushiki KaishaInventors: Takatsugu Moriya, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Ayako Tozuka, Tomoki Ishiwata, Tomohiro Sato
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Publication number: 20180162130Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.Type: ApplicationFiled: February 6, 2018Publication date: June 14, 2018Inventors: Takatsugu Moriya, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Ayako Tozuka, Tomoki Ishiwata, Tomohiro Sato
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Patent number: 9981470Abstract: A liquid ejection head substrate includes a heating resistor array including a plurality of heating resistors and a protective film covering at least one of the heating resistors. The liquid ejection head substrate further includes a supply opening array and an electrode. The supply opening array is disposed on a side of a surface of the liquid ejection head substrate on which the protective film is provided. The supply opening array includes a plurality of supply openings through which a liquid is supplied arranged in a direction along the heating resistor array. The electrode is disposed on the side of the surface in a space between the supply openings adjacent to each other in a direction along the supply opening array. The electrode is configured such that a voltage is applied between the electrode and the protective film.Type: GrantFiled: August 15, 2017Date of Patent: May 29, 2018Assignee: Canon Kabushiki KaishaInventors: Koichi Ishida, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Takatsugu Moriya, Tatsuya Yamada, Shuzo Iwanaga
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Patent number: 9975347Abstract: A liquid is reliably supplied to a liquid ejection head through a plurality of supply paths. The liquid is supplied to a plurality of areas of the liquid ejection head through the plurality of supply paths and a liquid ejection amount per unit time from the liquid ejection head is controlled so that a liquid flow amount of each of the areas becomes a predetermined flow amount or less.Type: GrantFiled: December 27, 2016Date of Patent: May 22, 2018Assignee: Canon Kabushiki KaishaInventors: Ayako Tozuka, Shuzo Iwanaga, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Tomohiro Sato, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada, Tomoki Ishiwata
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Patent number: 9969165Abstract: Multiple recording elements are disposed on one face of a recording element board, and a groove-shaped liquid supply channel is provided on the other face in common for the recording elements. Multiple supply ports passing through the recording element board and communicating the liquid supply channel with pressure chambers, and supply-side openings serving as supply ports of liquid to the liquid supply channel are further provided. When discharging liquid, the sum of pressure drop of the liquid from any supply-side opening to the supply port at a position farthest removed from that supply-side opening, and the pressure drop of the liquid at the supply port, is 5000 Pa or less.Type: GrantFiled: December 29, 2016Date of Patent: May 15, 2018Assignee: Canon Kabushiki KaishaInventors: Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Ayako Tozuka, Tomoki Ishiwata, Tomohiro Sato
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Patent number: 9931845Abstract: A liquid ejection module and a liquid ejection head capable of suppressing unevenness in printing are provided. Accordingly, openings are disposed so that a center position of at least one of openings in a plurality of ejection opening rows is not disposed on the same line extending in a print medium movement direction in a relative movement with respect to center positions of the other openings.Type: GrantFiled: December 22, 2016Date of Patent: April 3, 2018Assignee: Canon Kabushiki KaishaInventors: Takatsugu Moriya, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Ayako Tozuka, Tomoki Ishiwata, Tomohiro Sato
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Publication number: 20180056654Abstract: A discharge port array is inclined to a second direction B at an angle ? that satisfies a relation of tan ?=d2/(N×d1), where d1 is a distance between discharge ports within the discharge port array in the second direction B, and d2 is a distance between two adjacent discharge ports within each group in a first direction.Type: ApplicationFiled: August 30, 2017Publication date: March 1, 2018Inventors: Tomohiro Sato, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Takatsugu Moriya, Koichi Ishida, Tatsuya Yamada, Shuzo Iwanaga, Shingo Okushima
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Publication number: 20180022087Abstract: A liquid discharging head includes a discharge port that discharges a liquid, a pressure chamber that communicates with the discharge port, and an energy generating element that is disposed in the pressure chamber. In the liquid discharging head, the discharge port is provided with a plurality of projections that project towards a central portion of the discharge port from an inner peripheral edge of the discharge port, and an interval between the projections at a location where the projections are closest to each other is 5 ?m or less.Type: ApplicationFiled: July 20, 2017Publication date: January 25, 2018Inventors: Takatsugu Moriya, Shuzo Iwanaga, Shintaro Kasai, Yoshiyuki Nakagawa, Akiko Saito, Tatsuya Yamada, Tomohiro Sato, Ayako Iwasaki, Tomoki Ishiwata, Koichi Ishida