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    Droplet deposition apparatus and method for manufacturing the same
    49.
    发明授权
    Droplet deposition apparatus and method for manufacturing the same 有权
    液滴沉积装置及其制造方法

    公开(公告)号：US09566786B2

    公开(公告)日：2017-02-14

    申请号：US15038661

    申请日：2014-11-25

    申请人： XAAR TECHNOLOGY LIMITED

    发明人： Colin Brook ,  Alin Ristea ,  Michael Walsh ,  Chris Gosling

    IPC分类号： B41J2/14

    CPC分类号： B41J2/14209 ,  B29C45/14467 ,  B29C45/40 ,  B29K2023/06 ,  B29K2025/06 ,  B29K2101/10 ,  B29K2705/00 ,  B29L2031/748 ,  B41J2/14201 ,  B41J2/14233 ,  B41J2/1607 ,  B41J2/161 ,  B41J2/1637 ,  B41J2002/14419 ,  B41J2202/11 ,  B41J2202/12

    摘要： A droplet deposition apparatus, such as an inkjet printhead, that includes an integrally-formed manifold component and one or more actuator components; these actuator components provide an first array of fluid chambers, each of which has a piezoelectric actuator element and a nozzle, with this piezoelectric actuator element being able to cause the release in a deposition direction of fluid droplets through the nozzle in response to electrical signals; the first array of fluid chambers extends in an array direction from a first longitudinal end to a second, opposite longitudinal end, this array direction being perpendicular to the deposition direction; in addition, the manifold component is elongate in the array direction and includes a first and second manifold chambers, with these manifold chambers extending side-by-side in the array direction and the first manifold chamber being fluidically connected to the second manifold chamber via each of the fluid chambers in the first array; the cross-sectional area of at least one of these manifold chambers is tapered with distance in the array direction, for example to improve purging of the chambers during start-up; the cross-sectional shape of the integrally-formed manifold component perpendicular to the array direction varies with distance in the array direction such that the centroid of the cross-section remains a substantially constant distance, in said deposition direction, from said array of fluid chambers over the length of the first array of fluid chambers, with the integrally-formed manifold component thus being essentially self-stiffening.

    摘要翻译： 包括一体形成的歧管部件和一个或多个致动器部件的液滴沉积设备，例如喷墨打印头; 这些致动器部件提供第一阵列的流体室，每个流体室具有压电致动器元件和喷嘴，该压电致动器元件能够响应于电信号而使流体液滴的沉积方向通过喷嘴释放; 所述第一流体室阵列在阵列方向上从第一纵向端延伸到第二相对的纵向端，所述阵列方向垂直于所述沉积方向; 此外，歧管部件在阵列方向上是细长的并且包括第一和第二歧管腔室，这些歧管腔室在排列方向上并排延伸，并且第一歧管腔室通过每个腔室流体连接到第二歧管腔室 的第一阵列中的流体室; 这些歧管室中的至少一个的横截面面积在排列方向上的距离逐渐变细，例如以改善启动期间室的清洗; 垂直于阵列方向的整体形成的歧管部件的横截面形状随着阵列方向上的距离而变化，使得横截面的质心在所述沉积方向上保持基本上恒定的距离，所述距离从所述流体室阵列 在第一阵列的流体室的长度上，由此整体形成的歧管部件基本上是自刚性的。