公开(公告)号：US07703893B2

公开(公告)日：2010-04-27

申请号：US11158081

申请日：2005-06-22

申请人： Mark A. Gröninger ,  Marcus J. Van Den Berg ,  Hermanus M. A. Wijshoff

发明人： Mark A. Gröninger ,  Marcus J. Van Den Berg ,  Hermanus M. A. Wijshoff

IPC分类号： B41J2/05 ,  B41J29/393

CPC分类号： B41J2/04581 ,  B41J2/04555 ,  B41J2/125 ,  B41J2/19 ,  B41J2002/14354

摘要： An inkjet system including a printhead with an ink-fillable chamber operatively connected to a piezoelectric actuator and provided with a nozzle for the ejection of ink drops in response to the energization of the actuator, which actuator is connected to a measuring circuit for measuring an electrical signal generated by the actuator in response to the deformation thereof, wherein the system is configured such that a natural frequency of said system corresponds substantially to a natural frequency of a disturbance in the system.

摘要翻译： 一种喷墨系统，包括具有可充墨室的打印头，可操作地连接到压电致动器并且响应于致动器的通电而设置有用于喷射墨滴的喷嘴，该致动器连接到用于测量电气的测量电路 由致动器响应于其变形而产生的信号，其中系统被配置为使得所述系统的固有频率基本上对应于系统中的干扰的固有频率。

公开(公告)号：US07481517B2

公开(公告)日：2009-01-27

申请号：US11392699

申请日：2006-03-30

申请人： Hermanus M. A. Wijshoff

发明人： Hermanus M. A. Wijshoff

IPC分类号： B41J2/14 ,  B41J2/16

CPC分类号： B41J2/14201 ,  B41J2/17593 ,  B41J2202/11

摘要： An inkjet printer for jetting ink that is substantially free of solvent, the printer containing a printhead having an ink chamber with an ink inlet and an ink outlet, an ink supply reservoir in fluid connection with the chamber via the ink inlet, an electromechanical transducer in operative connection with the ink chamber for generating pressure waves herein, and a heater for substantially uniformly heating the ink in the ink chamber, wherein the ink inlet includes a constricting element such that the pressure drop over the constricting element in the direction from the reservoir to the chamber is smaller than the pressure drop over said element in the opposite direction for the same net fluid flow and wherein the ratio of the length of the constricting element and the mean diameter of the constricting element is less than 10.

摘要翻译： 一种用于喷射基本上不含溶剂的油墨的喷墨打印机，所述打印机包含具有带有墨入口和墨出口的墨室的打印头，经由所述墨入口与所述室流体连接的墨供给储存器， 与用于在此产生压力波的墨室的操作连接，以及用于基本上均匀地加热墨室中的墨的加热器，其中墨入口包括收缩元件，使得收缩元件上的压力从储层到 对于相同的净流体流，该腔室小于相反方向上的所述元件上的压降，并且其中收缩元件的长度与收缩元件的平均直径之比小于10。

公开(公告)号：US07398689B2

公开(公告)日：2008-07-15

申请号：US11374027

申请日：2006-03-14

申请人： Hermanus M. A. Wijshoff

发明人： Hermanus M. A. Wijshoff

IPC分类号： G01L11/00

CPC分类号： B41J2/14274

摘要： An inkjet printer containing a substantially closed ink duct and a transducer used to generate a pressure wave in the duct, wherein the transducer comprises a first part and, separate from the first part, a second part whereby, by actuation of the transducer, the first part manifests a first deformation and the second part simultaneously manifests a second deformation actually opposed to the first deformation, such that a pressure wave is generated in the ink duct.

摘要翻译： 一种喷墨打印机，其包含基本封闭的墨水管道和用于在所述管道中产生压力波的换能器，其中，所述换能器包括第一部分，并且与所述第一部分分离第二部分，由此通过所述换能器的致动，所述第一部分 部分表现出第一变形，第二部分同时表现出与第一变形实际相反的第二变形，使得在油墨管道中产生压力波。

公开(公告)号：US07562969B2

公开(公告)日：2009-07-21

申请号：US11446112

申请日：2006-06-05

申请人： Hermanus M. A. Wijshoff

发明人： Hermanus M. A. Wijshoff

IPC分类号： B41J2/045

CPC分类号： B41J2/04525 ,  B41J2/04531 ,  B41J2/04581 ,  B41J2/04596 ,  B41J2/14274

摘要： A inkjet printhead containing two substantially closed ink chambers separated by a wall, each of the chambers having associated therewith an electro-mechanical converter, where actuation of the converter corresponding to a first chamber of said printhead will lead to a volume change in a second chamber due to cross-talk, whereby the wall is deformable in such a way that it deforms by actuation and as such simultaneously generates a second volume change in the same chamber, either volume change being, in essence, the same size but opposite to the other.

摘要翻译： 一种喷墨打印头，包含由壁分隔开的两个基本封闭的墨水室，每个室具有与之相关联的电 - 机械转换器，其中对应于所述打印头的第一室的转换器的致动将导致第二室中的体积变化 由于串扰，由此壁可变形，使得其通过致动而变形，并且同时在同一室中产生第二体积变化，或者体积变化本质上相同尺寸但与另一个相反 。