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    Operating a piezoelectric actuator membrane of a pressure chamber
    1.
    发明授权
    Operating a piezoelectric actuator membrane of a pressure chamber 有权
    操作压力腔的压电致动器膜

    公开(公告)号：US09266323B2

    公开(公告)日：2016-02-23

    申请号：US13783501

    申请日：2013-03-04

    Applicant: OCE TECHNOLOGIES B.V.

    Inventor： Hans Reinten

    IPC: B41J2/045 ,  F04B43/04 ,  B41J2/14

    CPC classification number: B41J2/14201 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/14233 ,  F04B43/043

    Abstract: A method of controlling a pressure of a fluid in a pressure chamber, which pressure chamber is delimited by an actuator membrane having a first piezoelectric portion arranged in a central zone of the actuator membrane and at least one second piezoelectric portion arranged in at least one peripheral zone of the actuator membrane; and an ink jet printing device. In a neutral stage, a first flexure state of the actuator membrane is provided by applying first and second voltages to respective piezoelectric portions. In an activation stage, the first and second voltages are temporarily varied, without reversing their polarity, such that a curvature of the central part of the actuator membrane and a curvature of the peripheral part of the actuator membrane are changed in opposite directions, in order to expell a droplet of fluid through a nozzle.

    Abstract translation: 一种控制压力室中的流体的压力的方法，该压力室由致动器隔膜限定，所述致动器膜具有设置在致动器膜的中心区域中的第一压电部分和布置在至少一个外围部分中的至少一个第二压电部分 致动膜的区域; 和喷墨打印装置。 在中性阶段，通过向相应的压电部分施加第一和第二电压来提供致动器膜的第一弯曲状态。 在激活阶段，暂时改变第一和第二电压，而不会使它们的极性反转，使得致动器膜的中心部分的曲率和致动器膜的周边部分的曲率以相反方向改变，按顺序 以通过喷嘴排出液滴。

    Droplet generating device
    2.
    发明授权
    Droplet generating device 有权
    液滴发生装置

    公开(公告)号：US09242461B1

    公开(公告)日：2016-01-26

    申请号：US14829916

    申请日：2015-08-19

    Applicant: OCE-TECHNOLOGIES B.V.

    Inventor： Hans Reinten ,  Maikel A. J. Huygens

    IPC: B41J2/045 ,  B41J2/14

    CPC classification number: B41J2/14201 ,  B41J2/14233 ,  B41J2002/1437 ,  B41J2002/14403

    Abstract: A droplet generating device includes a wafer with a recess that defines a pressure chamber, a flexible membrane bonded to the wafer so as to cover the recess and form a wall of the pressure chamber, and an actuator attached to the membrane for flexing the membrane to generate a pressure wave in a liquid in the pressure chamber, the pressure chamber having a first port connected to a liquid supply line, and a second port connecting the pressure chamber to a nozzle, at least one of the ports being arranged adjacent to the membrane, wherein the wafer forms at least one island portion that projects into the at least one of the ports, engages the membrane and divides the port into at least two separate passages, and wherein the at least one island portion is arranged to delimit a flexing part of the membrane on a side of the at least one of the ports.

    Abstract translation: 液滴产生装置包括具有限定压力室的凹部的晶片，结合到晶片的柔性膜以覆盖凹部并形成压力室的壁;以及附接到膜的致动器，用于将膜弯曲成 在所述压力室中的液体中产生压力波，所述压力室具有连接到液体供应管线的第一端口和将所述压力室连接到喷嘴的第二端口，所述端口中的至少一个邻近所述膜布置 ，其中所述晶片形成突出到所述至少一个所述端口中的至少一个岛部分，接合所述膜并将所述端口划分成至少两个分离的通道，并且其中所述至少一个岛部分被布置成限定弯曲部分 的膜在所述至少一个端口的一侧上。

    Inkjet print head having two actuator membranes
    3.
    发明授权
    Inkjet print head having two actuator membranes 有权
    喷墨打印头具有两个致动器膜

    公开(公告)号：US08899731B2

    公开(公告)日：2014-12-02

    申请号：US14100948

    申请日：2013-12-09

    Applicant: OCE-Technologies B.V.

    Inventor： Hans Reinten ,  Marcus J. Van Den Berg

    IPC: B41J2/045 ,  B41J2/14

    CPC classification number: B41J2/14274 ,  B41J2/14233 ,  B41J2002/14338

    Abstract: An ink jet printing device includes a pressure chamber, a first actuator membrane being arranged to form a first flexible wall of the pressure chamber, a first piezo-electric part being operatively connected to a surface of the first actuator membrane, a second actuator membrane being arranged to form a second flexible wall of the pressure chamber and a second piezo-electric part being operatively connected to a surface of the second actuator membrane, wherein the second flexible wall is mechanically decoupled from the first flexible wall.

    Abstract translation: 喷墨打印装置包括压力室，第一致动器膜被布置成形成压力室的第一柔性壁，第一压电部分可操作地连接到第一致动器膜的表面，第二致动器膜是 布置成形成压力室的第二柔性壁，以及可操作地连接到第二致动器膜的表面的第二压电部件，其中第二柔性壁与第一柔性壁机械地分离。

    Droplet ejection device
    6.
    发明授权
    Droplet ejection device 有权
    滴液喷射装置

    公开(公告)号：US09216577B2

    公开(公告)日：2015-12-22

    申请号：US14563501

    申请日：2014-12-08

    Applicant: OCE-TECHNOLOGIES B.V.

    Inventor： Hendrik J. Stolk ,  Alex N. Westland ,  Hans Reinten

    IPC: B41J2/14

    CPC classification number: B41J2/1433 ,  B41J2002/14475 ,  B41J2202/07

    Abstract: A droplet ejection device includes a pressure chamber; a nozzle orifice arranged in fluid connection with the pressure chamber; an actuator system for generating a pressure wave in a liquid present in the pressure chamber; and an obstruction member arranged in the pressure chamber in a position opposite to the nozzle orifice. The obstruction member comprises a first surface facing the nozzle orifice and rigidly coupled to a wall of the pressure chamber via a support. The support is arranged near the first surface of the obstruction member. The droplet ejection device according to the present invention may further comprise a structured nozzle inflow means which provides a gradual transition from the hollow shaped liquid passage to the nozzle orifice. The droplet ejection device prevents or at least mitigates air entrapment in dead volumes present in the interior of the droplet ejection device.

    Abstract translation: 液滴喷射装置包括压力室; 布置成与所述压力室流体连接的喷嘴孔; 用于在存在于压力室中的液体中产生压力波的致动器系统; 以及阻塞构件，其布置在所述压力室中与所述喷嘴孔相对的位置。 阻塞构件包括面向喷嘴孔口的第一表面，并且经由支撑件刚性地联接到压力室的壁。 支撑件设置在阻塞构件的第一表面附近。 根据本发明的液滴喷射装置还可以包括结构化的喷嘴流入装置，其提供从中空形状的液体通道到喷嘴孔的逐渐过渡。 液滴喷射装置防止或至少减轻存在于液滴喷射装置内部的死体积中的空气滞留。

    Inkjet print head having a pivotably supported membrane and method for manufacturing such a print head
    7.
    发明授权
    Inkjet print head having a pivotably supported membrane and method for manufacturing such a print head 有权
    具有可枢转支撑的膜的喷墨打印头和用于制造这种打印头的方法

    公开(公告)号：US08899732B2

    公开(公告)日：2014-12-02

    申请号：US14279583

    申请日：2014-05-16

    Applicant: OCE-Technologies B.V.

    Inventor： Hans Reinten ,  Alex N. Westland ,  René´ J. Van Der Meer

    IPC: B41J2/045 ,  B41J2/14 ,  B41J2/16

    CPC classification number: B41J2/14201 ,  B41J2/14233 ,  B41J2/1607 ,  B41J2002/14241 ,  B41J2002/1437 ,  Y10T29/49401

    Abstract: A print head comprises a pressure chamber in fluid communication with a nozzle and an actuator structure in operative communication with the pressure chamber for generating a pressure wave in the pressure chamber. The actuator structure comprises a membrane, wherein a first surface of the membrane forms a flexible wall of the pressure chamber and a piezo actuator, wherein the piezo actuator is arranged on a second surface of the membrane, the second surface being opposite of the first surface, such that the membrane is deformed at the position of the piezo actuator upon actuation of the piezo actuator. In the print head, the membrane is pivotably clamped between a first structure layer and a second structure layer such that the membrane pivots at the location of clamping upon deformation of the membrane due to actuation of the piezo actuator.

    Abstract translation: 打印头包括与喷嘴流体连通的压力室和与压力室可操作地连通的致动器结构，用于在压力室中产生压力波。 致动器结构包括膜，其中膜的第一表面形成压力室的柔性壁和压电致动器，其中压电致动器布置在膜的第二表面上，第二表面与第一表面相对 使得当压电致动器致动时，膜在压电致动器的位置处变形。 在打印头中，膜可枢转地夹紧在第一结构层和第二结构层之间，使得膜由于压电致动器的致动而在膜的变形时在夹紧位置枢转。

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