公开(公告)号：US20210162753A1

公开(公告)日：2021-06-03

申请号：US17108714

申请日：2020-12-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuma FUKUZAWA ,  Shotaro TAMAI ,  Yoichi NAGANUMA ,  Akira MIYAGISHI ,  Kazuaki UCHIDA

IPC: B41J2/14 ,  B41J2/18

Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.

公开(公告)号：US20160296248A1

公开(公告)日：2016-10-13

申请号：US15188688

申请日：2016-06-21

Applicant: SEIKO EPSON CORPORATION

Inventor： Takeshi SETO ,  Hirokazu SEKINO ,  Kazuaki UCHIDA ,  Kazuo KAWASUMI

IPC: A61B17/3203 ,  F04B43/08 ,  F04B53/16 ,  A61M3/02

CPC classification number: A61B17/3203 ,  A61M3/02 ,  A61M3/0233 ,  F04B43/02 ,  F04B43/08 ,  F04B53/16

Abstract: A liquid ejecting apparatus includes: an inflow channel to which liquid is supplied; an outflow channel communicated with a nozzle; a liquid chamber formed with a spiral flow channel having a substantially constant cross-sectional area between the inflow channel and the outflow channel and having a given volume; a volume changing portion configured to deform the liquid chamber so as to change the volume of the liquid chamber to a volume smaller than the given volume; and an ejection control unit configured to cause the liquid to be ejected from the nozzle in a pulsed manner by driving the volume changing portion in a state in which the liquid chamber is filled with the liquid.

公开(公告)号：US20150289900A1

公开(公告)日：2015-10-15

申请号：US14683030

申请日：2015-04-09

Applicant: SEIKO EPSON CORPORATION

Inventor： Tsunemori ASAHI ,  Masaki GOMI ,  Kazuaki UCHIDA

IPC: A61B17/3203 ,  A61M39/22 ,  A61M39/08 ,  A61M3/02

CPC classification number: A61B17/3203 ,  A61B2017/00017 ,  A61B2017/00022 ,  A61B2217/007 ,  A61M3/02 ,  A61M5/14224 ,  A61M5/1452 ,  A61M5/1458 ,  A61M5/14586 ,  A61M5/1684 ,  A61M39/08 ,  A61M39/22 ,  A61M2205/0294 ,  A61M2205/14 ,  A61M2205/332 ,  A61M2205/3334 ,  A61M2205/3382 ,  A61M2205/3386 ,  A61M2205/3389 ,  A61M2206/10 ,  A61M2206/20

Abstract: A fluid ejection device includes: a fluid ejection unit that ejects a fluid in a pulsed manner; a fluid accommodation portion that accommodates the fluid at a predetermined pressure or higher; a fluid supply unit that supplies the fluid accommodated in the fluid accommodation portion to the fluid ejection unit; a connection channel that connects the fluid ejection unit and the fluid accommodation portion, and acts as a channel through which the fluid flows; an opening and closing unit that opens and closes the connection channel; and a control unit that sends an open signal for opening the connection channel to the opening and closing unit, and sends an ejection signal for ejecting the fluid to the fluid ejection unit. The control unit sends the ejection signal after a predetermined amount of time has elapsed from the sending of the open signal.

Abstract translation: 流体喷射装置包括：以脉冲方式喷射流体的流体喷射单元; 流体容纳部分，其以预定压力或更高的压力容纳流体; 流体供应单元，其将容纳在流体容纳部分中的流体供应到流体喷射单元; 连接通道，其连接流体喷射单元和流体容纳部分，并且作为流体流过的通道; 打开和关闭连接通道的打开和关闭单元; 以及控制单元，其向打开和关闭单元发送用于打开连接通道的打开信号，并且将用于将流体喷射到喷射单元的喷射信号发送。 控制单元在从打开信号的发送经过预定的时间之后发送排出信号。

公开(公告)号：US20150073453A1

公开(公告)日：2015-03-12

申请号：US14483387

申请日：2014-09-11

Applicant: SEIKO EPSON CORPORATION

Inventor： Hideki KOJIMA ,  Kazuaki UCHIDA ,  Takeshi SETO ,  Hirokazu SEKINO

IPC: A61B17/3203

CPC classification number: A61B17/3203 ,  A61B2017/00075 ,  A61B2017/00154 ,  A61B2017/00194 ,  A61B2017/00973

Abstract: A medical device that ejects a fluid includes a fluid ejection portion having an ejection tube having an opening for ejecting the fluid and a pulsation generation portion that generates pulsation to the fluid. A control portion controls a pulsation frequency by controlling the pulsation generation portion. A measurement portion measures movement velocity of the fluid ejection portion. A receiving portion receives instructions for setting a specific frequency and a specific movement velocity from a user. A setting portion sets the specific frequency and movement velocity based on the instruction from a user. A calculation portion calculates a control constant using the specific frequency and movement velocity. The control portion controls the frequency in accordance with the movement velocity so that a value calculated by the same method as calculation of the control constant using the frequency and movement velocity falls within a predetermined range including the control constant.

Abstract translation: 喷射流体的医疗装置包括具有喷射管的流体喷射部，喷射管具有用于喷射流体的开口和向流体产生脉动的脉动产生部。 控制部通过控制脉动产生部来控制脉动频率。 测量部分测量流体喷射部分的运动速度。 接收部分接收用于设定来自用户的特定频率和特定移动速度的指令。 设定部根据来自用户的指示设定特定的频率和移动速度。 计算部分使用特定频率和移动速度来计算控制常数。 控制部分根据移动速度控制频率，使得通过与使用频率和移动速度的控制常数的计算相同的方法计算的值落在包括控制常数的预定范围内。

公开(公告)号：US20140296892A1

公开(公告)日：2014-10-02

申请号：US14226975

申请日：2014-03-27

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazuaki UCHIDA ,  Junichi KARASAWA ,  Takahiro MATSUZAKI

IPC: B05B5/16 ,  A61B17/3203

CPC classification number: B05B5/16 ,  A61B17/3203 ,  A61B2017/00017 ,  A61B2017/32032 ,  A61B2560/02 ,  F04B43/046 ,  F04B49/065 ,  F04B53/06 ,  F04B2203/0402

Abstract: A fluid ejection device which ejects a fluid includes: an ejection pipe having an opening to eject the fluid; a fluid chamber which communicates with the ejection pipe and changes in volume due to displacement of a piezoelectric element; a supply channel which communicates with the fluid chamber; an opening/closing unit which is provided on the supply channel and opens and closes the supply channel; a fluid supplying unit which pressurizes the fluid and supplies the fluid to the fluid chamber via the supply channel; and a voltage controller which applies a drive voltage to the piezoelectric element. The voltage controller controls the drive voltage applied to the piezoelectric element so that the drive voltage reaches a predetermined voltage after the supply channel is opened by the opening/closing unit.

Abstract translation: 喷射流体的流体喷射装置包括：喷射管，其具有用于喷射流体的开口; 流体室，其与排出管连通并且由于压电元件的位移而体积变化; 与流体室连通的供给通道; 打开/关闭单元，设置在供给通道上并打开和关闭供应通道; 流体供应单元，其对所述流体加压并且经由所述供应通道将所述流体供应到所述流体室; 以及向压电元件施加驱动电压的电压控制器。 电压控制器控制施加到压电元件的驱动电压，使得在供给通道被打开/关闭单元打开之后驱动电压达到预定电压。

公开(公告)号：US20210162752A1

公开(公告)日：2021-06-03

申请号：US17108381

申请日：2020-12-01

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuma FUKUZAWA ,  Shotaro TAMAI ,  Yoichi NAGANUMA ,  Akira MIYAGISHI ,  Kazuaki UCHIDA

IPC: B41J2/14 ,  B41J2/18

Abstract: A liquid ejecting head including: an individual flow path row in which a plurality of individual flow paths communicating with a nozzle that ejects a liquid in a first axis direction are arranged in parallel along a second axis orthogonal to a first axis, and a first common liquid chamber communicating with the plurality of individual flow paths, in which each of the plurality of individual flow paths has a pressure chamber that stores a liquid.

公开(公告)号：US20210031517A1

公开(公告)日：2021-02-04

申请号：US16942133

申请日：2020-07-29

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazuaki UCHIDA

IPC: B41J2/14

Abstract: A liquid ejecting head includes a first individual flow path and a second individual flow path that are adjacent to each other, a first common liquid chamber and a second common liquid chamber. In the first individual flow path, a first communication flow path extending between the first common liquid chamber and a first nozzle, and an inertance of the first communication flow path is smaller than an inertance of a second communication flow path extending between the second common liquid chamber and the first nozzle. In the second individual flow path, a third communication flow path extending between the second common liquid chamber and a second nozzle, and an inertance of the third communication flow path is smaller than an inertance of a fourth communication flow path extending between the first common liquid chamber and the second nozzle.

公开(公告)号：US20200001608A1

公开(公告)日：2020-01-02

申请号：US16453028

申请日：2019-06-26

Applicant: SEIKO EPSON CORPORATION

Inventor： Toshiro MURAYAMA ,  Yuma FUKUZAWA ,  Shunya FUKUDA ,  Kazuaki UCHIDA ,  Shunsuke WATANABE ,  Noriaki OKAZAWA

IPC: B41J2/14

Abstract: A head includes a flow path substrate including a flow path of the liquid in the flow path substrate, a nozzle plate which is attached to the flow path substrate and in which the nozzle is formed, a pressure chamber substrate that is attached to a location facing the nozzle plate with the flow path substrate interposed therebetween and that has a pressure chamber, and a pressure generation portion that operates according to an electrical signal from a wiring substrate coupled to an electrode provided on the pressure chamber substrate and that changes a pressure of the pressure chamber to eject the liquid from the nozzle, in which the nozzle plate and the wiring substrate are disposed such that the nozzle plate does not overlap a coupling portion between the wiring substrate and the electrode when viewed in a thickness direction of the flow path substrate.

公开(公告)号：US20190291434A1

公开(公告)日：2019-09-26

申请号：US16358996

申请日：2019-03-20

Applicant: SEIKO EPSON CORPORATION

Inventor： Kazuaki UCHIDA ,  Toshiro MURAYAMA ,  Shunya FUKUDA

IPC: B41J2/14

Abstract: A liquid ejecting head has: a nozzle plate defining a nozzle; a pressure generating section corresponding to a pressure chamber communicating with the nozzle and the section configured to cause a liquid to be ejected from the nozzle; a common flow path through which the liquid is to be supplied to and discharged from the pressure chamber; and a vibration absorbing body configured to eliminate changes in pressure in the common flow path. The vibration absorbing body and the nozzle plate each define an inner wall of the common flow path and an outer wall of the liquid ejecting head.

公开(公告)号：US20150289895A1

公开(公告)日：2015-10-15

申请号：US14682923

申请日：2015-04-09

Applicant: Seiko Epson Corporation

Inventor： Masaki GOMI ,  Kazuaki UCHIDA

IPC: A61B17/3203 ,  A61M3/02 ,  A61M39/22 ,  A61B19/00

CPC classification number: A61B17/3203 ,  A61B2017/00017 ,  A61B2017/00154 ,  A61B2090/065 ,  A61B2090/0811 ,  A61M3/02 ,  A61M2205/3331 ,  A61M2205/3334 ,  A61M2205/3379

Abstract: A fluid ejection device includes a fluid ejection unit that ejects fluid and an ejection control unit that controls ejection of the fluid. A fluid container accommodates the fluid supplied to the fluid ejection unit. A connection channel connects the fluid ejection unit and the fluid container. A volume change unit controls opening and closing of the connection channel and adjusts an inner volume of the fluid container. The fluid ejection device operates in a first ejection mode in which, when the connection channel is opened, the volume change unit reduces the inner volume, and the ejection control unit ejects fluid from the fluid ejection unit, and after the ejection of the fluid, the connection channel is closed. In a second ejection mode, after the first ejection mode, when the connection channel is opened, the ejection control unit allows the ejection of fluid from the fluid ejection unit.

Abstract translation: 流体喷射装置包括喷射流体的流体喷射单元和控制流体喷出的喷射控制单元。 流体容器容纳供应到流体喷射单元的流体。 连接通道连接流体喷射单元和流体容器。 音量改变单元控制连接通道的打开和关闭，并调节流体容器的内部容积。 流体喷射装置以第一喷射模式工作，其中当连接通道打开时，体积改变单元减小内部体积，并且喷射控制单元从流体喷射单元喷射流体，并且在喷射流体之后， 连接通道关闭。 在第二喷射模式中，在第一喷射模式之后，当连接通道打开时，喷射控制单元允许从流体喷射单元喷射流体。