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公开(公告)号：US11813864B2
公开(公告)日：2023-11-14
申请号：US17538775
申请日：2021-11-30
IPC分类号： B41J2/14
CPC分类号： B41J2/14145 , B41J2/1404 , B41J2/14016 , B41J2002/14306 , B41J2202/20 , B41J2202/21
摘要： A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n−2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.
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公开(公告)号：US11065874B2
公开(公告)日：2021-07-20
申请号：US16421314
申请日：2019-05-23
发明人： Naoko Shimizu , Yukuo Yamaguchi , Mikiya Umeyama
摘要： A method of manufacturing a liquid ejection head including a first step of having a molten resin becoming a first portion flow in between a first position in a first mold and a first position in a second mold and the molten resin becoming a second portion flow in between a second position in the first mold and a second position in the second mold; a second step of relatively moving the first and second molds, after opening the molds; a third step of closing the molds; a fourth step of joining the first and second portions, a fifth step of taking out the first and second portions and the sealing portion from the molds and mounting a recording element substrate; and a step of forming a space portion between a liquid supply path surface and a mounting surface.
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公开(公告)号：US20240034061A1
公开(公告)日：2024-02-01
申请号：US18485183
申请日：2023-10-11
IPC分类号： B41J2/14
CPC分类号： B41J2/14145 , B41J2/1404 , B41J2/14016 , B41J2002/14306 , B41J2202/20 , B41J2202/21
摘要： A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n−2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.
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公开(公告)号：US11850855B2
公开(公告)日：2023-12-26
申请号：US17538775
申请日：2021-11-30
IPC分类号： B41J2/14
CPC分类号： B41J2/14145 , B41J2/1404 , B41J2/14016 , B41J2002/14306 , B41J2202/20 , B41J2202/21
摘要： A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n−2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.
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公开(公告)号：US11660867B2
公开(公告)日：2023-05-30
申请号：US17112490
申请日：2020-12-04
发明人： Yosuke Takagi , Hiroki Tajima , Kyosuke Toda , Naoko Shimizu , Shimpei Yoshikawa
CPC分类号： B41J2/1433 , B41J2/17523
摘要： A liquid ejection head includes a flow path-forming part having a flow path for liquid supplied from a liquid reservoir and a plurality of outlet ports for discharging the liquid, a liquid ejecting unit having a plurality of inlet ports into which the liquid flows and a plurality of ejection element rows corresponding to the inlet ports and each having a plurality of ejection elements to eject the liquid, and a sealing member having a sealing opening which allows communication between the plurality of outlet ports and the plurality of inlet ports. sealing member seals a portion between the flow path-forming part and the liquid ejecting unit so that the plurality of outlet ports and the plurality of inlet ports are in communication. A plurality of the sealing openings are provided for the sealing member, and at least one of the sealing openings has at least two inlet ports.
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公开(公告)号：US11192370B2
公开(公告)日：2021-12-07
申请号：US16902570
申请日：2020-06-16
发明人： Naoko Shimizu , Yosuke Takagi , Shimpei Yoshikawa , Hiroki Tajima , Kyosuke Toda
摘要： A liquid ejection head includes a recording element substrate including a plurality of ejection port arrays, a support member supporting the recording element substrate, and including a plurality of liquid chambers, and a channel member including a plurality of channels. Each of the plurality of liquid chambers includes an opening connected to one of the plurality of channels. Each of the plurality of channels is a channel that extends upward from the opening in a vertical direction, in a posture of the liquid ejection head in ejecting the liquid. A volume of the channel connected to the opening located at a central portion of the liquid chamber in the longitudinal direction, among the plurality of channels, is greater than a volume of the channel connected to the opening located on an end portion side apart from the central portion of the liquid chamber in the longitudinal direction.
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公开(公告)号：US20210170748A1
公开(公告)日：2021-06-10
申请号：US17112490
申请日：2020-12-04
发明人： Yosuke Takagi , Hiroki Tajima , Kyosuke Toda , Naoko Shimizu , Shimpei Yoshikawa
摘要： A liquid ejection head includes a flow path-forming part having a flow path for liquid supplied from a liquid reservoir and a plurality of outlet ports for discharging the liquid, a liquid ejecting unit having a plurality of inlet ports into which the liquid flows and a plurality of ejection element rows corresponding to the inlet ports and each having a plurality of ejection elements to eject the liquid, and a sealing member having a sealing opening which communicates the plurality of outlet ports and the plurality of inlet ports, the sealing member sealing a portion between the flow path-forming part and the liquid ejecting unit so that the plurality of outlet ports and the plurality of inlet ports are in communication. A plurality of the sealing openings are provided for the sealing member, and at least one of the sealing openings has at least two inlet ports.
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公开(公告)号：US11433677B2
公开(公告)日：2022-09-06
申请号：US17103307
申请日：2020-11-24
发明人： Atsushi Omura , Hiroki Tajima , Keiichiro Tsukuda , Kenji Yabe , Yuji Tamaru , Naoko Shimizu , Sayaka Seki , Yosuke Takagi , Shimpei Yoshikawa , Ryo Sato , Kyosuke Toda
IPC分类号： B41J2/175
摘要： A liquid filling method of filling a liquid storage device including a first tank that stores a liquid to be supplied to an ejection head ejecting the liquid and a second tank that stores the liquid to be supplied to the first tank through a connection port provided in the first tank with the liquid, the method including: injecting the liquid from a liquid storage container into the first tank through a first liquid introduction port provided in the first tank, in a state where a second liquid introduction port provided in the second tank is closed.
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公开(公告)号：US20220176700A1
公开(公告)日：2022-06-09
申请号：US17538775
申请日：2021-11-30
摘要： A liquid ejection head includes ejection orifices for ejecting liquid, common liquid chambers connected to the ejection orifices, common flow passages, and pitch conversion flow passages that connects the common flow passages and liquid chambers to each other. The pitch conversion flow passages includes a periphery formed with resin. In a case where a number of pitch conversion flow passages in a group is minimum on a condition that one or more of the pitch conversion flow passages are respectively included in the group, the pitch conversion flow passages have a repeating pattern in which the group is repeatedly arranged. At least one of two pitch conversion flow passages adjoining an m-th pitch conversion flow passage (m is all integers from 1 to n−2, where n is an integer of 3 or more) is one of first to (m+1)-th pitch conversion flow passages.
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公开(公告)号：US11192381B2
公开(公告)日：2021-12-07
申请号：US16804223
申请日：2020-02-28
发明人： Hiroki Tajima , Keiichiro Tsukuda , Kenji Yabe , Yuji Tamaru , Naoko Shimizu , Kyosuke Toda , Sayaka Seki , Yosuke Takagi , Shimpei Yoshikawa , Ryo Sato
IPC分类号： B41J2/175
摘要： A liquid ejection apparatus includes: a recording head that ejects liquid; a sub-tank that is connected to the recording head and temporarily stores the liquid to be supplied to the recording head; a liquid tank that communicates with the sub-tank and is able to be filled with the liquid; a first atmosphere opening unit that is provided in the liquid tank; and a second atmosphere opening unit that is provided in the sub-tank. The second atmosphere opening unit is closable when the liquid tank is filled with the liquid, and the first atmosphere opening unit and the second atmosphere opening unit are able to open the liquid tank and the sub-tank to the atmosphere, respectively, when the sub-tank is filled with the liquid filled in the liquid tank by a hydraulic head pressure.
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