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公开(公告)号：US20240294009A1
公开(公告)日：2024-09-05
申请号：US18581651
申请日：2024-02-20
IPC分类号： B41J2/14
CPC分类号： B41J2/14201 , B41J2/1433 , B41J2002/14306 , B41J2002/14475
摘要： The first nozzle includes a first portion and a second portion. The second nozzle includes a third portion and a fourth portion. The capacity of the first portion is smaller than the capacity of the second portion. The capacity of the third portion is smaller than the capacity of the fourth portion. The capacity of the first portion is smaller than the capacity of the third portion. The length of the second portion in the X direction is greater than the length of the fourth portion in the X direction.
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公开(公告)号：US20230391092A1
公开(公告)日：2023-12-07
申请号：US18328131
申请日：2023-06-02
发明人： Yu HASEGAWA , Eiichiro WATANABE , Masami OTA , Hiroaki OKUI
IPC分类号： B41J2/175
CPC分类号： B41J2/175
摘要： A liquid ejecting apparatus includes a liquid ejection head, a supply tank, a recovery tank, a supply flow path, a recovery flow path, a pressurizing mechanism pressurizing the inside of the supply tank, and a depressurizing mechanism depressurizing the inside of the recovery tank. A filling period, in which a filling process is performed to fill, with the liquid, a nozzle, the supply flow path, and the recovery flow path, includes a period that is after a meniscus is formed in the nozzle and before the liquid reaches the recovery flow path. In the period, the pressurizing and the depressurizing mechanisms are driven; and in the period, Pt_out>−|Pm| is satisfied, where Pm indicates a pressure at which the meniscus is broken and Pt_out indicates a pressure in the recovery tank.
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公开(公告)号：US20230347645A1
公开(公告)日：2023-11-02
申请号：US18308055
申请日：2023-04-27
发明人： Eiichiro WATANABE , Hiroaki OKUI , Yu HASEGAWA
IPC分类号： B41J2/045
CPC分类号： B41J2/04588 , B41J2/04581
摘要： A liquid ejecting apparatus includes a liquid ejection head, a circulation control section that controls a circulation operation of circulating the liquid in the first individual flow path, and a minute vibration control section that supplies a drive signal having a first waveform to the first piezoelectric element so as to control a minute vibration operation of causing the liquid in the first nozzle to vibrate to such a degree that the liquid is not ejected from the first nozzle. The circulation control section starts the circulation operation at a first time, and the minute vibration control section starts the minute vibration operation at a second time earlier than the first time.
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公开(公告)号：US20230347641A1
公开(公告)日：2023-11-02
申请号：US18308080
申请日：2023-04-27
发明人： Eiichiro WATANABE , Hiroaki OKUI , Yu HASEGAWA
CPC分类号： B41J2/04551 , B41J2/16505 , B41J2/04581 , B41J2002/14338
摘要： A liquid ejecting apparatus includes a liquid ejection head, a circulation control section that controls a circulation operation of circulating the liquid in the first individual flow path, and a minute vibration control section that supplies a drive signal having a first waveform to the first piezoelectric element so as to control a minute vibration operation of causing the liquid in the first nozzle to vibrate to such a degree that the liquid is not ejected from the first nozzle. The circulation control section starts the circulation operation at a first time, and the minute vibration control section starts the minute vibration operation at a second time later than the first time.
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公开(公告)号：US20220184956A1
公开(公告)日：2022-06-16
申请号：US17547526
申请日：2021-12-10
发明人： Hiroaki OKUI , Eiichiro WATANABE , Shun KATSUIE
摘要： A head includes an upper surface opposite from an ejection surface; and an electrical coupling portion disposed at a first-end portion of the upper surface in a Y-direction, an outer shape of the upper surface has first and second edges separated from each other in an X-direction, a third-edge disposed at the first-end portion, and a fourth-edge disposed at a second-end portion opposite from the first-end portion in the Y-direction, along a V-direction, and when viewed in a normal direction, the upper surface is not overlapped with an acute-angled portion of a virtual parallelogram having a first-virtual side contacting the first-edge, a second-virtual side contacting the second-edge, a third-virtual side contacting the third-edge, and a fourth-virtual side contacting the fourth-edge, and projects beyond an obtuse-angled portion of the virtual parallelogram in the X-direction.
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公开(公告)号：US20210394521A1
公开(公告)日：2021-12-23
申请号：US17346349
申请日：2021-06-14
发明人： Eiichiro WATANABE
摘要： A liquid ejecting head includes: a nozzle face; a filter; a downstream chamber that includes a first outlet and a second outlet for discharging the liquid, the downstream chamber being located downstream of the filter; a first flow passage that is in communication with the downstream chamber through the first outlet; a second flow passage that is in communication with the downstream chamber through the second outlet; and a common flow passage that is in communication with the first flow passage and the second flow passage, wherein, as viewed perpendicularly to the nozzle face, the first outlet is located at a position that is shifted from a center of the downstream chamber in a first direction, and the second outlet is located at a position that is shifted from the center of the downstream chamber in a second direction that is opposite of the first direction.
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公开(公告)号：US20210394520A1
公开(公告)日：2021-12-23
申请号：US17304040
申请日：2021-06-14
摘要： A flow passage member includes: a supply flow passage through which liquid flows; a filter provided on a path of the supply flow passage, the liquid being configured to pass through the filter; a fixing member which constitutes a part of the supply flow passage and to which the filter is fixed; and a first member which constitutes a part of the supply flow passage and to which the fixing member is fixed; wherein the fixing member is made of thermoplastic resin, and the first member is made of any of thermosetting resin, metal, and ceramic.
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公开(公告)号：US20200276815A1
公开(公告)日：2020-09-03
申请号：US16802154
申请日：2020-02-26
发明人： Eiichiro WATANABE
摘要： A liquid ejecting head includes a first-valve-mechanism, a second-valve-mechanism, a nozzle plate, and a holder housing the first-valve-mechanisms and the second-valve-mechanisms. When a direction perpendicular to the nozzle plate is a first-direction, the nozzle plate extends in a second-direction and a third-direction. The first-valve-mechanism and the second-valve-mechanism arranged in the third-direction, with a space therebetween. The first-valve-mechanism includes a first-valve-element and a first-downstream-cover-member defining a first-downstream-chamber downstream of the first-valve-element. The second-valve-mechanism includes a second-valve-element and a second-downstream-cover-member defining a second-downstream-chamber downstream of the second-valve-element. The first-downstream-cover-member faces the second-downstream-cover-member. An interval between the nozzle plate and the first-valve-element is equal to an interval between the nozzle plate and the second-valve-element in the first-direction. The holder has no wall in an area of the space between the first-valve-mechanism and the second-valve-mechanism, the area overlapping the first-downstream-cover-member and the second-downstream-cover-member as viewed from the third-direction.
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公开(公告)号：US20240100823A1
公开(公告)日：2024-03-28
申请号：US18474145
申请日：2023-09-25
发明人： Eiichiro WATANABE
CPC分类号： B41J2/04551 , B41J2/04508 , B41J2/04581 , B41J2/19
摘要： A liquid ejecting apparatus includes a mode controller that controls execution of a first mode in which an operation of the liquid ejecting head is controlled under pressurization at first pressure by the pressurizing mechanism and depressurization at second pressure by the depressurizing mechanism and execution of a second mode in which the operation of the liquid ejecting head is controlled under pressurization at third pressure by the pressurizing mechanism and depressurization at fourth pressure by the depressurizing mechanism. To switch from the execution of the first mode to the execution of the second mode, the mode controller gradually changes, from the first pressure to the third pressure, pressure at which the pressurization operation is performed by the pressurizing mechanism, and gradually changes, from the second pressure to the fourth pressure, pressure at which the depressurization operation is performed by the depressurizing mechanism.
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公开(公告)号：US20240025180A1
公开(公告)日：2024-01-25
申请号：US18355267
申请日：2023-07-19
发明人： Eiichiro WATANABE
IPC分类号： B41J2/175
CPC分类号： B41J2/17566 , B41J2202/12
摘要： a first flow path communicating with the first common flow path; a second flow path communicating with the first common flow path at a position different from a position at which the first flow path communicates with the first common flow path; a third flow path communicating with the second common flow path; and a fourth flow path communicating with the second common flow path at a position different from a position at which the third flow path communicates with the second common flow path. In a first mode: through the first flow path, a liquid is supplied to the first common flow path; through the second flow path, the liquid is collected from the first common flow path; through the third flow path, the liquid is supplied to the second common flow path; and through the fourth flow path, the liquid is collected from the second common flow path.
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