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    PIEZO-ACTUATED INKJET PRINT HEAD, METHOD OF DESIGNING SUCH A PRINT HEAD AND A METHOD OF MANUFACTURING SUCH A PRINT HEAD
    1.
    发明申请
    PIEZO-ACTUATED INKJET PRINT HEAD, METHOD OF DESIGNING SUCH A PRINT HEAD AND A METHOD OF MANUFACTURING SUCH A PRINT HEAD 审中-公开
    PIEZO执行的喷墨头，设计这样的打印头的方法和制造这样的打印头的方法

    公开(公告)号：US20160121611A1

    公开(公告)日：2016-05-05

    申请号：US14991430

    申请日：2016-01-08

    Applicant: OCE-TECHNOLOGIES B.V.

    Inventor： Hans REINTEN ,  Hendrik J. STOLK ,  Patrick H.M.A. BRANDTS

    IPC: B41J2/14 ,  B41J2/16

    CPC classification number: B41J2/14274 ,  B41J2/14233 ,  B41J2/161 ,  B41J2/1612 ,  B41J2/1623

    Abstract: An inkjet print head for expelling a droplet of a fluid through a nozzle orifice comprises a fluid channel for holding a channel amount of fluid, the fluid channel comprising a pressure chamber in fluid communication with the nozzle orifice and a piezo actuator. The piezo actuator comprises an active piezo stack, which stack comprises a first electrode, a second electrode, and a piezo-material layer arranged between the first and the second electrode, and the piezo actuator comprises a membrane having a first side and a second side, the second side being opposite to the first side. The active piezo stack is provided at the first side and the pressure chamber at the second side such that the membrane forms a flexible wall of the pressure chamber. The fluid channel, when holding the channel amount of fluid, has a fluid compliance and the piezo actuator has an actuator compliance. In accordance with the present invention, the actuator compliance is larger than the fluid channel compliance such to have a high energy coupling efficiency and consequently a low power dissipation.

    Abstract translation: 用于通过喷嘴孔排出流体液滴的喷墨打印头包括用于保持通道量的流体的流体通道，流体通道包括与喷嘴孔流体连通的压力室和压电致动器。 压电致动器包括有源压电叠层，该叠层包括布置在第一和第二电极之间的第一电极，第二电极和压电材料层，并且压电致动器包括具有第一侧和第二侧的膜 第二侧与第一侧相对。 主动压电堆叠设置在第一侧和第二侧的压力室处，使得膜形成压力室的柔性壁。 流体通道在保持流体的通道量时具有流体顺应性，并且压电致动器具有致动器顺从性。 根据本发明，致动器顺从性大于流体通道顺应性，从而具有高的能量耦合效率，从而具有低的功率耗散。

    INKJET PRINT HEAD AND METHOD FOR MANUFACTURING SUCH PRINT HEAD
    2.
    发明申请
    INKJET PRINT HEAD AND METHOD FOR MANUFACTURING SUCH PRINT HEAD 有权
    喷墨打印头和制造这种打印头的方法

    公开(公告)号：US20140247309A1

    公开(公告)日：2014-09-04

    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: B41J2/14 ,  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。

    COATING FOR PROVIDING A WETTING GRADIENT TO AN ORIFICE SURFACE AROUND AN ORIFICE AND METHOD FOR APPLYING SAID COATING
    3.
    发明申请
    COATING FOR PROVIDING A WETTING GRADIENT TO AN ORIFICE SURFACE AROUND AN ORIFICE AND METHOD FOR APPLYING SAID COATING 审中-公开
    涂抹在表面上涂抹表面的磨砂表面和涂布涂层的方法

    公开(公告)号：US20130127950A1

    公开(公告)日：2013-05-23

    申请号：US13739062

    申请日：2013-01-11

    Applicant: OCE TECHNOLOGIES B.V.

    Inventor： Dan CRINGUS ,  Marcus J. VAN DEN BERG ,  Hans REINTEN

    IPC: B41J2/16

    CPC classification number: B41J2/1606 ,  B05D2490/60 ,  B41J2/162 ,  B41J2/164 ,  B41J2/1642

    Abstract: A coating provides a wetting gradient to an orifice surface, the coating having a local coverage that decreases with increasing distance from an orifice. A method is provided for applying a wetting gradient on an orifice surface. The wetting gradient is formed by providing a compound for forming a coating and locally bonding this compound to the orifice surface. A print head is provided with an orifice surface, wherein the orifice surface has a wetting gradient provided around an orifice using the method for applying a wetting gradient on an orifice surface.

    Abstract translation: 涂层为孔表面提供润湿梯度，涂层具有随着与孔口距离的增加而减小的局部覆盖。 提供了一种在孔表面上施加润湿梯度的方法。 润湿梯度通过提供用于形成涂层的化合物并将该化合物局部粘合到孔表面而形成。 打印头设置有孔表面，其中孔表面具有使用在孔表面上施加润湿梯度的方法设置在孔周围的润湿梯度。

    OPERATING A PIEZOELECTRIC ACTUATOR MEMBRANE OF A PRESSURE CHAMBER
    6.
    发明申请
    OPERATING A PIEZOELECTRIC ACTUATOR MEMBRANE OF A PRESSURE CHAMBER 有权
    操作压力室的压电致动器膜

    公开(公告)号：US20130177449A1

    公开(公告)日：2013-07-11

    申请号：US13783501

    申请日：2013-03-04

    Applicant: OCE TECHNOLOGIES B.V.

    Inventor： Hans REINTEN

    IPC: F04B7/02

    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 EJECTION DEVICE
    7.
    发明申请
    DROPLET EJECTION DEVICE 有权

    公开(公告)号：US20150091982A1

    公开(公告)日：2015-04-02

    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
    8.
    发明申请
    INKJET PRINT HEAD 有权
    INKJET打印头

    公开(公告)号：US20140098163A1

    公开(公告)日：2014-04-10

    申请号：US14100948

    申请日：2013-12-09

    Applicant: OCE-TECHNOLOGIES B.V.

    Inventor： Hans REINTEN ,  Marcus J. VAN DEN BERG

    IPC: B41J2/14

    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。

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