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公开(公告)号：US11919304B2
公开(公告)日：2024-03-05
申请号：US17445873
申请日：2021-08-25
Applicant: SEIKO EPSON CORPORATION
Inventor： Atsushi Toyofuku , Toshiro Murayama , Takahiro Katakura
CPC classification number: B41J2/04588 , B41J2/04541 , B41J2/04581 , B41J2/04598
Abstract: A drive-waveform determination method determines a waveform of a first drive pulse to be applied to a drive element included in a first liquid discharging head that discharges liquid. The drive-waveform determination method includes: a first step of obtaining second waveform information regarding a waveform of a second drive pulse to be applied to a drive element included in a second liquid discharging head that discharges liquid; and a second step of determining the waveform of the first drive pulse, based on the second waveform information.
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公开(公告)号：US11613119B2
公开(公告)日：2023-03-28
申请号：US17152931
申请日：2021-01-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiro Murayama , Takahiro Katakura , Nobuaki Ito
Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a state of a dot formed on a recording medium by the liquid discharged from the nozzle, as a recording condition, and a driving step of applying the drive pulse that varies depending on the recording condition acquired in the acquisition step, to the drive element. The drive pulse may include a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential may be to be applied after the first potential, and the third potential may be to be applied after the second potential.
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公开(公告)号：US11504965B2
公开(公告)日：2022-11-22
申请号：US17153083
申请日：2021-01-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiro Murayama , Takahiro Katakura , Nobuaki Ito
IPC: B41J2/045
Abstract: In the present liquid discharge method, in the driving step, the drive pulse in which a potential change rate during a change from the third potential to the first potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.
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公开(公告)号：US11491779B2
公开(公告)日：2022-11-08
申请号：US17153535
申请日：2021-01-20
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiro Murayama , Takahiro Katakura , Nobuaki Ito
Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition including a first discharge characteristic and a second discharge characteristic of the liquid from the liquid discharge head, a determination step of determining the drive pulse to be applied to the drive element, based on the recording condition, and a driving step of applying the drive pulse determined in the determination step to the drive element. In the liquid discharge method, in the determination step, the drive pulse is determined by a determination method subjected to weighting in which a weight of the first discharge characteristic is greater than a weight of the second discharge characteristic.
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公开(公告)号：US10315432B2
公开(公告)日：2019-06-11
申请号：US15704311
申请日：2017-09-14
Applicant: Seiko Epson Corporation
Inventor： Hirofumi Sakai , Keigo Sugai , Takahiro Katakura , Junichi Sano , Shinichi Nakamura
Abstract: A fluid discharging apparatus includes a storage chamber storing a fluid, a discharge port communicating with the storage chamber, a supply unit supplying the fluid to the storage chamber by pressure, a moving object moving in a first direction toward the discharge port and in a second direction away from the discharge port, a pressure changing mechanism, and a control unit controlling the moving object and the pressure changing mechanism. The control unit performs discharge processing, moving processing, and pressure control processing. In the discharge processing, the moving object moves from a closed position closing the discharge port in the first direction to discharge the fluid. In the moving processing, the moving object moves in the second direction while the fluid is discharged from the discharge port. In the pressure control processing, the pressure changing mechanism suppresses a pressure increase in storage chamber.
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Patent Agency Ranking
公开(公告)号：US20180178224A1
公开(公告)日：2018-06-28
申请号：US15830293
申请日：2017-12-04
Applicant: Seiko Epson Corporation
Inventor： Shinichi Nakamura , Takahiro Katakura , Keigo Sugai , Hirofumi Sakai , Junichi Sano
CPC classification number: B05B1/086 , B05B17/0607 , B29C64/00 , B29C64/106 , B29C64/209 , B33Y30/00 , B41J2/04 , B41J2/14201 , B41J2202/05
Abstract: A fluid discharge apparatus includes a storage chamber, a moving body, a drive mechanism, and a coupling member. The storage chamber includes a discharge port to discharge the fluid. The moving body includes a leading end portion facing the discharge port inside the storage chamber. The drive mechanism is positioned on the opposite side of the moving body to the discharge port, and performs an operation to reciprocate the moving body. The coupling member couples the moving body to the drive mechanism such that the moving body is attachable and detachable. The coupling member includes a biasing section to apply an elastic force in a direction to move the moving body toward the drive mechanism, and, while pressing the moving body against the coupling member, to support the moving body in a state in which the moving body is capable of elastic displacement in a direction toward the discharge port.
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公开(公告)号：US12172435B2
公开(公告)日：2024-12-24
申请号：US17653903
申请日：2022-03-08
Applicant: SEIKO EPSON CORPORATION
Inventor： Takahiro Katakura , Takanori Aimono , Shotaro Tamai
IPC: B41J2/045
Abstract: Provided is a drive method of a liquid discharging head including a first step of acquiring physical property information indicating a physical property of liquid in the liquid discharging head, a second step of determining a waveform of a drive signal based on the physical property information, a third step of forming a first liquid column by supplying a first waveform, which is included in a first drive signal among the drive signals having the waveforms determined in the second step, to a drive element, and a fourth step of, when the first liquid column is formed, forming a second liquid column by supplying a second waveform, which is included in a second drive signal among the drive signals having the waveforms determined in the second step, to the drive element, and thereafter discharging a part or all of liquid constituting the second liquid column as a droplet.
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公开(公告)号：US11964478B2
公开(公告)日：2024-04-23
申请号：US17650131
申请日：2022-02-07
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiro Murayama , Atsushi Toyofuku , Shunya Fukuda , Takahiro Katakura
IPC: B41J2/045
CPC classification number: B41J2/04556 , B41J2/04541 , B41J2/04588 , B41J2/04581
Abstract: A waveform determination method is disclosed that includes acquiring second timing information regarding a timing at which the flight distance of the droplet reaches the first distance when each of the plurality of waveform candidates indicated by the second waveform information is used, and a determination step of determining a waveform of each of the first drive pulse and the second drive pulse based on the first timing information and the second timing information.
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公开(公告)号：US11780225B2
公开(公告)日：2023-10-10
申请号：US17660872
申请日：2022-04-27
Applicant: Seiko Epson Corporation
Inventor： Takahiro Katakura , Takanori Aimono , Shotaro Tamai
IPC: B41J2/14
CPC classification number: B41J2/14201
Abstract: When a pressure of the liquid inside the common supply flow path is higher than a pressure of the liquid inside the pressure chamber, the adjustment portion changes the cross-sectional area to be a first cross-sectional area when a pressure difference, which is a difference between the pressure of the liquid inside the common supply flow path and the pressure of the liquid inside the pressure chamber, is a first pressure difference, and changes the cross-sectional area to be a second cross-sectional area larger than the first cross-sectional area when the pressure difference is a second pressure difference larger than the first pressure difference.
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公开(公告)号：US11745506B2
公开(公告)日：2023-09-05
申请号：US17154725
申请日：2021-01-21
Applicant: SEIKO EPSON CORPORATION
Inventor： Toshiro Murayama , Takahiro Katakura , Nobuaki Ito
IPC: B41J2/045
CPC classification number: B41J2/0459 , B41J2/04558 , B41J2/04581 , B41J2/04588
Abstract: A liquid discharge method of discharging a liquid from a nozzle of a liquid discharge head by applying a drive pulse to a drive element of the liquid discharge head includes an acquisition step of acquiring a recording condition, and a driving step of applying the drive pulse to the drive element. The drive pulse includes a first potential, a second potential different from the first potential, and a third potential different from the first potential and the second potential. The second potential is to be applied after the first potential, and the third potential is to be applied after the second potential. In the liquid discharge method, in the driving step, the drive pulse in which a time of the second potential varies depending on the recording condition acquired in the acquisition step is applied to the drive element.
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