公开(公告)号：US06350007B1

公开(公告)日：2002-02-26

申请号：US09174796

申请日：1998-10-19

申请人： Michael Meichle ,  John A. Quenin ,  Ravi Sharma ,  Christopher N. Delametter

发明人： Michael Meichle ,  John A. Quenin ,  Ravi Sharma ,  Christopher N. Delametter

IPC分类号： B41J2165

CPC分类号： B41J29/17 ,  B41J2/16552 ,  B41J2/16585 ,  B41J2/185 ,  B41J2002/16567

摘要： Self-cleaning printer having ultrasonics and method of assembling same for cleaning a print head surface and ink ejection orifices. The printer comprises a print head defining a plurality of ink channels therein, each ink channel terminating in an ink ejection orifice. The print head also has a surface thereon surrounding all the orifices. Particulate matter may reside on the surface and also may completely or partially obstruct the orifice. Therefore, a cleaning assembly is disposed relative to the surface and/or orifice for directing a flow of fluid along the surface and/or across the orifice to clean the particulate matter from the surface and/or orifice. The cleaning assembly includes an ultrasonic transducer in communication with the fluid for generating ultrasonic vibrations causing pressure waves within the fluid. Presence of the pressure waves induces a hydrodynamic force in the fluid. This force acts against the particulate matter to clean the particulate matter from the surface and/or orifice. A pump is also provided for pumping the fluid from the surface and/or orifice as the surface and/or orifice is cleaned. As the surface and/or orifice is cleaned, the particulate matter is entrained in the fluid. A filter is provided to separate the particulate matter from the fluid.

摘要翻译： 具有超声波的自清洁打印机以及用于清洁打印头表面和喷墨孔的组装方法。 打印机包括在其中限定多个墨水通道的打印头，每个墨水通道终止于墨水喷射口。 打印头还具有围绕所有孔的表面。 颗粒物质可能驻留在表面上，并且也可以完全或部分地阻塞孔口。 因此，相对于表面和/或孔设置清洁组件，用于沿着表面和/或穿过孔引导流体流，以从表面和/或孔口清洁颗粒物质。 清洁组件包括与流体连通的超声换能器，用于产生引起流体内的压力波的超声波振动。 压力波的存在引起流体中的流体动力。 该力作用于颗粒物质以从表面和/或孔口清洁颗粒物质。 还提供泵，用于当清洁表面和/或孔口时从表面和/或孔口泵送流体。 当清洁表面和/或孔时，颗粒物质被夹带在流体中。 提供过滤器以将颗粒物质与流体分离。

公开(公告)号：US06286929B1

公开(公告)日：2001-09-11

申请号：US09222409

申请日：1998-12-29

申请人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle ,  Klaus-Dieter Bier ,  Walter S. Stevens

发明人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle ,  Klaus-Dieter Bier ,  Walter S. Stevens

IPC分类号： B41J2165

CPC分类号： B41J2/16552 ,  B41J2/16585 ,  B41J2/185

摘要： A self-cleaning ink jet printer with oscillating septum and ultrasonics and method of assembling the printer. The printer has a print head defining a plurality of ink channels therein, each ink channel terminating in an ink ejection orifice. The print head also has a surface thereon surrounding all the orifices. Contaminant may reside on the surface and also may completely or partially obstruct the orifice. Therefore, a cleaning assembly is disposed relative to the surface and/or orifice for directing a flow of fluid along the surface and/or across the orifice to clean the contaminant from the surface and/or orifice. The cleaning assembly includes an oscillatable septum disposed opposite the surface or orifice for defining a gap therebetween. Presence of the septum accelerates the flow of fluid through the gap to induce a hydrodynamic shearing force in the fluid. This shearing force acts against the contaminant to “sweep” the contaminant from the surface and/or orifice. Also included is an ultrasonic transducer in communication with the fluid for generating a plurality of pressure waves in the fluid for dislodging the contaminant. A pump in fluid communication with the gap is also provided for pumping the fluid through the gap. As the surface and/or orifice is cleaned, the contaminant is entrained in the fluid. A filter is provided to separate the contaminant from the fluid.

摘要翻译： 具有振动隔膜和超声波的自清洁喷墨打印机以及组装打印机的方法。 打印机具有在其中限定多个墨水通道的打印头，每个墨水通道终止于墨水喷射口。 打印头还具有围绕所有孔的表面。 污染物可能驻留在表面上，也可能完全或部分地堵塞孔口。 因此，相对于表面和/或孔设置清洁组件，用于沿着表面和/或穿过孔引导流体流，以从表面和/或孔口清洁污染物。 清洁组件包括与表面或孔相对设置的可摆动隔膜，用于在其间限定间隙。 隔垫的存在加速流体通过间隙的流动，以在流体中引起流体动力剪切力。 该剪切力作用在污染物上以从表面和/或孔口“扫”污染物。 还包括与流体连通的超声波换能器，用于在流体中产生多个压力波，用于移除污染物。 还提供与间隙流体连通的泵，用于泵送流体通过间隙。 当表面和/或孔被清洁时，污染物被夹带在流体中。 提供过滤器以将污染物与流体分离。

公开(公告)号：US06203145B1

公开(公告)日：2001-03-20

申请号：US09466346

申请日：1999-12-17

申请人： David L. Jeanmaire ,  David P. Trauernicht ,  Christopher N. Delametter

发明人： David L. Jeanmaire ,  David P. Trauernicht ,  Christopher N. Delametter

IPC分类号： B41J202

CPC分类号： B41J2/03 ,  B41J2/105 ,  B41J2002/032 ,  B41J2002/14475 ,  B41J2202/16

摘要： A continuous ink jet printing system using asymmetrical heating of the fluid in which the nozzle bore (46, 76, 78) of the printhead preferably has a non-circular opening. The nozzle bore (46, 76, 78) has reflection symmetry about the long axis of its cross-section and may be, for example, elliptical or rectangular. In the preferred embodiment of the invention, the nozzle bore (46, 76, 78) has an aspect ratio greater than unity, wherein the aspect ratio is defined as the ratio of the long axis length to the short axis length. A heater (50, 50′, 50″) used to generate deflection of the fluid exiting the nozzle bore (46, 76, 78) generally conforms to the perimeter of the nozzle bore (46, 76, 78) such that the heated portion is along the long dimension of the nozzle bore (46, 76, 78).

摘要翻译： 使用不对称加热流体的连续喷墨打印系统，其中打印头的喷嘴孔（46,76,78）优选地具有非圆形开口。 喷嘴孔（46,76,78）具有围绕其横截面的长轴的反射对称性，并且可以是例如椭圆形或矩形的。 在本发明的优选实施例中，喷嘴孔（46,76,78）具有大于1的纵横比，其中纵横比定义为长轴长度与短轴长度的比。 用于产生离开喷嘴孔（46,76,78）的流体的偏转的加热器（50,50'，50“）大体上符合喷嘴孔（46,76,78）的周边，使得加热 部分沿着喷嘴孔（46,76,78）的长尺寸。

公开(公告)号：US06183058B2

公开(公告)日：2001-02-06

申请号：US09407451

申请日：1999-09-28

申请人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle ,  Omid A. Moghadam ,  Walter S. Stevens

发明人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle ,  Omid A. Moghadam ,  Walter S. Stevens

IPC分类号： B41J2165

CPC分类号： B41J2/16552 ,  B41J2/16585 ,  B41J2/185

摘要： Self-cleaning printer system with reverse fluid flow and method of assembling the printer system. The printer system comprises a print head defining a plurality of ink channels therein, each ink channel terminating in an ink ejection orifice. The print head also has a surface thereon surrounding all the orifices. Contaminant may reside on the surface and also may completely or partially obstruct the orifice. Therefore, a cleaning assembly is disposed relative to the surface and/or orifice for directing a flow of fluid along the surface and/or across the orifice to clean the contaminant from the surface and/or orifice. The cleaning assembly includes a septum disposed opposite the surface or orifice for defining a gap therebetween. Presence of the septum accelerates the flow of fluid through the gap to induce a hydrodynamic shearing force in the fluid. This shearing force acts against the contaminant to clean the contaminant from the surface and/or orifice. A pump in fluid communication with the gap is also provided for pumping the fluid through the gap. As the surface and/or orifice is cleaned, the contaminant is entrained in the fluid. A filter is provided to separate the contaminant from the fluid. In addition, a valve system in fluid communication with the gap is operable to direct flow of the fluid through the gap in a first direction and then in a second direction opposite the first direction to enhance cleaning effectiveness. Moreover, the print head itself has integral passageways formed therein for conducting the flow of fluid to the surface of the print head.

摘要翻译： 具有反向流体流动的自清洁打印机系统和组装打印机系统的方法。 打印机系统包括在其中限定多个墨水通道的打印头，每个墨水通道终止于墨水喷射口。 打印头还具有围绕所有孔的表面。 污染物可能驻留在表面上，也可能完全或部分地堵塞孔口。 因此，相对于表面和/或孔设置清洁组件，用于沿着表面和/或穿过孔引导流体流，以从表面和/或孔口清洁污染物。 清洁组件包括与表面或孔相对设置的隔膜，用于在其间限定间隙。 隔垫的存在加速流体通过间隙的流动，以在流体中引起流体动力剪切力。 该剪切力作用在污染物上以从表面和/或孔口清洁污染物。 还提供与间隙流体连通的泵，用于泵送流体通过间隙。 当表面和/或孔被清洁时，污染物被夹带在流体中。 提供过滤器以将污染物与流体分离。 此外，与间隙流体连通的阀系统可操作以引导流体在第一方向上流过间隙，然后在与第一方向相反的第二方向上引导流体，以提高清洁效果。 此外，打印头本身具有形成在其中的整体通道，用于将流体流动导向打印头的表面。

公开(公告)号：US6142601A

公开(公告)日：2000-11-07

申请号：US205946

申请日：1998-12-04

申请人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle

发明人： Ravi Sharma ,  John A. Quenin ,  Christopher N. Delametter ,  Michael E. Meichle

IPC分类号： B08B3/04 ,  B41J2/165

CPC分类号： B41J2/16552 ,  B41J2/16585

摘要： Self-cleaning printer with reverse fluid flow and method of assembling the printer. The printer comprises a print head defining a plurality of ink channels therein, each ink channel terminating in an ink ejection orifice. The print head also has a surface thereon surrounding all the orifices. Contaminant may reside on the surface and also may completely or partially obstruct the orifice. Therefore, a cleaning assembly is disposed relative to the surface and/or orifice for directing a flow of fluid along the surface and/or across the orifice to clean the contaminant from the surface and/or orifice. The cleaning assembly includes a septum disposed opposite the surface or orifice for defining a gap therebetween. Presence of the septum accelerates the flow of fluid through the gap to induce a hydrodynamic shearing force in the fluid. This shearing force acts against the contaminant to clean the contaminant from the surface and/or orifice. A pump in fluid communication with the gap is also provided for pumping the fluid through the gap. As the surface and/or orifice is cleaned, the contaminant is entrained in the fluid. A filter is provided to separate the contaminant from the fluid. In addition, a valve system in fluid communication with the gap is operable to direct flow of the fluid through the gap in a first direction and then in a second direction opposite the first direction to enhance cleaning effectiveness.

摘要翻译： 具有反向流体流动的自清洁打印机和组装打印机的方法。 打印机包括在其中限定多个墨水通道的打印头，每个墨水通道终止于墨水喷射口。 打印头还具有围绕所有孔的表面。 污染物可能驻留在表面上，也可能完全或部分地堵塞孔口。 因此，相对于表面和/或孔设置清洁组件，用于沿着表面和/或穿过孔引导流体流，以从表面和/或孔口清洁污染物。 清洁组件包括与表面或孔相对设置的隔膜，用于在其间限定间隙。 隔垫的存在加速流体通过间隙的流动，以在流体中引起流体动力剪切力。 该剪切力作用在污染物上以从表面和/或孔口清洁污染物。 还提供与间隙流体连通的泵，用于泵送流体通过间隙。 当表面和/或孔被清洁时，污染物被夹带在流体中。 提供过滤器以将污染物与流体分离。 此外，与间隙流体连通的阀系统可操作以引导流体在第一方向上流过间隙，然后在与第一方向相反的第二方向上引导流体，以提高清洁效果。

公开(公告)号：US6126270A

公开(公告)日：2000-10-03

申请号：US17827

申请日：1998-02-03

申请人： John A. Lebens ,  Ravi Sharma ,  Christopher N. Delametter

发明人： John A. Lebens ,  Ravi Sharma ,  Christopher N. Delametter

IPC分类号： B41J2/045 ,  B41J2/055 ,  B41J2/14 ,  B41M5/00 ,  B41J2/214 ,  B41J2/06

CPC分类号： B41J2/14451

摘要： Image forming system and system. The method comprises a transducer for pressurizing and depressurizing an ink body so that an ink meniscus alternately extends from the ink body as the ink body is pressurized to form a neck portion thereof and retracts as the ink body is depressurized. An ink droplet separator is is in communication with the neck portion of the meniscus for lowering surface tension of the neck portion of the meniscus. In this regard, the droplet separator lowers the surface tension of the meniscus as the meniscus extends from the ink body. The extended meniscus severs from the ink body to form an ink droplet as the droplet separator lowers the surface tension of the neck portion to a predetermined value and as the ink meniscus retracts during depressurization of the ink body.

摘要翻译： 图像形成系统和系统。 该方法包括用于对油墨体进行加压和减压的换能器，使得油墨弯液面随着油墨体被加压而从油墨体交替地延伸以形成其颈部并随着油墨体被减压而缩回。 墨滴分离器与弯液面的颈部连通，用于降低弯液面的颈部的表面张力。 在这方面，液滴分离器随着弯液面从油墨体延伸而降低弯液面的表面张力。 随着液滴分离器，从油墨体延伸的弯液面切断以形成墨滴，使颈部的表面张力降低到预定值，并且随着油墨弯液面在油墨体的减压期间缩回。