公开(公告)号：US06568799B1

公开(公告)日：2003-05-27

申请号：US10055295

申请日：2002-01-23

申请人： Zhihao Yang ,  Ravi Sharma ,  Christopher N. Delametter ,  Milton S. Sales

发明人： Zhihao Yang ,  Ravi Sharma ,  Christopher N. Delametter ,  Milton S. Sales

IPC分类号： B41J275

CPC分类号： B41J2/14 ,  B41J2202/12

摘要： A drop on demand microfluidic ink jet printing system includes an ink flow chamber having a nozzle opening in a wall of the flow chamber through which ink droplets are ejected when ink in the flow chamber is at or above a predetermined positive pressure. An inlet channel opens into the flow chamber to supply thermally-responsive ink to the flow chamber at or above the predetermined pressure. A microfluidic outlet channel communicates the flow chamber with a low pressure ink reservoir such that thermally-responsive ink is normally transported from the flow chamber at a flow velocity sufficient to maintain ink in the flow chamber at a pressure less than the predetermined positive pressure. A valve selectively restricts the flow of the thermally-responsive ink through the microfluidic outlet channel sufficiently to cause an increase in ink pressure in the flow chamber to at least the predetermined positive pressure, the valve including a heater in contact with at least a portion of the associated microfluidic outlet channel, whereby the viscosity of the thermally-responsive ink can selectively be increased by heat from the heater to restrict the flow of the thermally-responsive ink from the flow chamber such that an ink droplet is ejected through the nozzle opening.

摘要翻译： 按需微型喷墨打印系统包括墨水流动室，其具有在流动室的壁中的喷嘴开口，当流动室中的墨水处于或高于预定的正压时，通过该喷嘴开口喷射墨滴。 入口通道通向流动室，以在预定压力或高于预定压力的情况下向流动室供应热响应性油墨。 微流出口通道将流动室与低压储墨器连通，使得热响应性油墨通常以足以将流动室中的墨维持在小于预定正压力的压力的流速从流动室输送。 阀选择性地限制热响应性油墨通过微流体出口通道的流动，足以使流动室中的油墨压力增加到至少预定的正压，该阀包括与至少一部分 相关联的微流体出口通道，由此热响应性油墨的粘度可以通过来自加热器的热量而选择性地增加，以限制来自流动室的热响应性油墨的流动，使得墨滴通过喷嘴开口喷射。

公开(公告)号：US06550892B1

公开(公告)日：2003-04-22

申请号：US10005579

申请日：2001-11-12

申请人： Ravi Sharma

发明人： Ravi Sharma

IPC分类号： B41J221

CPC分类号： B41J2/14 ,  B41J2/211

摘要： According to a feature of the present invention, a drop-on-demand ink jet printing system for delivering droplets of selectable-color ink to a receiver includes a print head having at least one ink ejecting chamber. Each ejecting chamber has an associated nozzle opening through which ink droplets are delivered to the receiver. A conduit is in fluid communication with each of the ejecting chambers and a plurality of sources of color liquid ink. Each source (1) contains liquid ink of a different color and (2) communicates with the conduit. A source of colorless liquid ink also communicates with the conduit to provide a flow of colorless liquid ink into the conduit for delivery into the ejecting chambers. A flow controller is adapted to selectably meter ink from the sources of color liquid ink into the conduit between the source of colorless liquid ink and the ejecting chambers, whereby ink slugs of selectable color are prepared in the conduit by controlled delivery of selected amounts of different color inks. The slugs are separated one from another along the conduit by colorless liquid ink.

摘要翻译： 根据本发明的特征，一种用于将可选择彩色油墨的液滴输送到接收器的按需喷墨打印系统包括具有至少一个喷墨室的打印头。 每个喷射室具有相关联的喷嘴开口，墨滴通过该喷嘴开口传送到接收器。 导管与每个排出室和多个彩色液体油墨源流体连通。 每个源（1）包含不同颜色的液体墨水，和（2）与导管连通。 无色液体墨水的来源还与导管连通，以将无色液体墨水流入导管中以输送到喷射室中。 流量控制器适于将墨水从彩色液体墨水源可选择地计量到无色液体墨水源和排出室之间的导管中，由此通过控制递送选定量的不同的颜色，在导管中制备可选颜色的墨块 彩色油墨。 通过无色液体油墨沿着管道分离出s。。

公开(公告)号：US06536873B1

公开(公告)日：2003-03-25

申请号：US09607840

申请日：2000-06-30

申请人： Yung-Rai R. Lee ,  John A. Lebens ,  Gilbert A. Hawkins ,  Ravi Sharma ,  Walter S. Stevens

发明人： Yung-Rai R. Lee ,  John A. Lebens ,  Gilbert A. Hawkins ,  Ravi Sharma ,  Walter S. Stevens

IPC分类号： B41J204

CPC分类号： B41J2/14451 ,  B41J2002/14338

摘要： Drop-on-demand ink jet printer capable of directional control of ink drop ejection and method of assembling the method. The method comprises a print head body having an ink ejection orifice adapted to poise an ink meniscus thereat about a center axis passing through the orifice. A deflector is coupled to the print head body and is adapted to be in communication with the poised meniscus for lowering surface tension of a region of the poised meniscus. The poised meniscus deflects away from the region of lower surface tension and away from the center axis to define a deflected meniscus, whereby an ink drop separated from the deflected meniscus travels at an angle with respect to the center axis, so that the ink drop can strike a receiver at any one of a plurality of predetermined locations on a print line.

摘要翻译： 能够定向控制墨滴喷射的按需喷墨打印机和组装方法的方法。 该方法包括具有墨喷射孔的打印头本体，该喷墨孔适于在通过该孔的中心轴上摆动油墨弯液面。 偏转器联接到打印头本体，并且适于与准备好的弯液面连通，以降低准位半月板的区域的表面张力。 准备好的弯液面偏离较低表面张力的区域并远离中心轴线以限定偏转的弯液面，由此与偏转的弯月面分离的墨滴以相对于中心轴线成一定角度行进，使得墨滴可以 在打印线上的多个预定位置中的任何一个处敲击接收器。

公开(公告)号：US06533951B1

公开(公告)日：2003-03-18

申请号：US09626874

申请日：2000-07-27

申请人： Michael Debar ,  Constantine N. Anagnostopoulos ,  Gilbert A. Hawkins ,  Ravi Sharma

发明人： Michael Debar ,  Constantine N. Anagnostopoulos ,  Gilbert A. Hawkins ,  Ravi Sharma

IPC分类号： H01L2100

CPC分类号： F04B19/24 ,  F04B43/043 ,  Y10T137/2877 ,  Y10T137/85986 ,  Y10T137/86155

摘要： A method of manufacturing a pump [10] for pumping various primary fluids. A body is formed from silicon dies [102,104]. A primary fluid channel [110] is formed in the body and a primary fluid supply [122] is coupled to the primary fluid channel [110] to supply a primary fluid to the primary fluid channel [110]. A mechanism for introducing a secondary fluid to an interface region of the primary fluid channel [110] is formed in the body. An energy delivery device is formed in the body to deliver energy to an interface between region between the primary fluid and the secondary fluid to create a thermal gradient along the fluid interface. The thermal gradient results in a surface tension gradient along the interface. The primary fluid will move to compensate for the surface tension gradient. Various semiconductor fabrication processes can be used to form the elements on the body.

摘要翻译： 一种用于泵送各种初级流体的泵[10]的制造方法。 一个体由硅模具形成[102,104]。 主体流体通道[110]形成在主体中，主流体供应装置[122]联接到主流体通道[110]，以将初级流体供应到主流体通道[110]。 在主体中形成有用于将二次流体引入到主流体通道[110]的界面区域的机构。 能量递送装置形成在主体中以将能量传递到初级流体和次级流体之间的区域之间的界面，以产生沿流体界面的热梯度。 热梯度导致沿着界面的表面张力梯度。 主要流体将移动以补偿表面张力梯度。 可以使用各种半导体制造工艺来在身体上形成元件。

公开(公告)号：US06523930B2

公开(公告)日：2003-02-25

申请号：US09750809

申请日：2000-12-28

申请人： Todd R. Griffin ,  Ravi Sharma ,  John R. Debesis ,  Robert J. Green, Jr. ,  Larry L. Lapa ,  Edwin A. Mycek

发明人： Todd R. Griffin ,  Ravi Sharma ,  John R. Debesis ,  Robert J. Green, Jr. ,  Larry L. Lapa ,  Edwin A. Mycek

IPC分类号： B41J2165

CPC分类号： B41J2/16585 ,  B41J2/16552

摘要： A self-cleaning ink jet printer with cleaning mechanism and method of cleaning the ink jet printer. The printer comprises a print head having a surface thereon surrounding a plurality of ink ejection orifices. The orifices are in communication with respective ones of a plurality of ink channels formed in the print head. A solvent delivering canopy is constructed from alternating stacked layers of polyimide and stainless steel sheets with internal geometries, one on top of each other, thus creating internal fluidic passageways. The canopy is connected to a manifold body and has a passageway alignable with the surface. Contaminant residing on the surface is entrained in the solvent when a wiper blade loosens contaminant from the surface. Per an applied vacuum, the canopy vacuums the solvent and entrained contaminant from the surface.

摘要翻译： 一种具有清洁机构和清洁喷墨打印机的方法的自清洁喷墨打印机。 打印机包括其上具有表面的打印头，围绕多个喷墨孔。 所述孔与形成在所述打印头中的多个墨通道中的各个通孔连通。 溶剂输送冠层由具有内部几何形状的彼此叠置的聚酰亚胺和不锈钢板的交替堆叠层构成，从而产生内部流体通道。 天篷连接到歧管主体并且具有与表面对准的通道。 当刮水片从表面松开污染物时，驻留在表面上的污染物被夹带在溶剂中。 每个应用的真空，冠层真空吸附溶剂和夹带的污染物从表面。

公开(公告)号：US06435647B1

公开(公告)日：2002-08-20

申请号：US09847833

申请日：2001-05-02

申请人： Charles F. Faisst, Jr. ,  Ravi Sharma ,  Todd R. Griffin

发明人： Charles F. Faisst, Jr. ,  Ravi Sharma ,  Todd R. Griffin

IPC分类号： B41J2165

摘要： An ink jet printer with cleaning mechanism, and method of assembling same. The printer comprises a print head having a surface thereon surrounding a plurality of ink ejection orifices. The orifices are in communication with respective ones of a plurality of ink channels formed in the print head. A vacuum hood capable of sealingly surrounding at least one of the orifices has having a first passageway therethrough capable of being disposed in communication with the orifice for vacuuming contaminant from the ink channel by way of the orifice. A solvent delivering wiper is connected to the hood and has a second passageway therethrough alignable with the surface. The second passageway delivers a liquid solvent to the surface to flush contaminant from the surface. Contaminant residing on the surface is entrained in the solvent while the wiper flushes contaminant from the surface. A vacuum canopy is connected to the wiper and has a third passageway therethrough alignable with the surface. The canopy vacuums the solvent and entrained contaminant from the surface. Moreover, a piping circuit is associated with the print head for filtering the particulate matter from the solvent and for recirculating clean solvent to the surface of the print head.

公开(公告)号：US06406122B1

公开(公告)日：2002-06-18

申请号：US09607092

申请日：2000-06-29

申请人： Ravi Sharma ,  Todd R. Griffin ,  Charles F. Faisst

发明人： Ravi Sharma ,  Todd R. Griffin ,  Charles F. Faisst

IPC分类号： B41J2165

CPC分类号： B41J2/1714 ,  B41J2/16552 ,  B41J2/185 ,  B41J2002/16567

摘要： A cleaning assembly (170) for removing contaminants from the surface (90) of an ink jet print head (60) in a self-cleaning ink jet printer (10). The print head (60) defines a plurality of ink channels (31) terminating in orifices (25) with a surface (90) surrounding the orifices (25). A gutter (17) is disposed opposite the print head surface (90) for collecting ink droplets (100) ejected from the orifices (25). A cleaning assembly (170) includes a cup (190) defining a cavity (197) with an open end (195) adapted to make contact with the print head surface (90). An inflow channel (210) provides the entry pathway for cleaning liquid to flow into the cavity (197) via a gap (220). An outflow channel provides an exit pathway for the flow of cleaning liquid from cavity (197). The inflow channel (210) and outflow channel are arranged to direct the flow of cleaning liquid into the cavity (197), over the print head surface (90) and orifices (25) so that contaminants are removed from the print head surface (90) and orifices (25).

摘要翻译： 一种用于从自清洁喷墨打印机（10）中的喷墨打印头（60）的表面（90）去除污染物的清洁组件（170）。 打印头（60）限定多个墨水通道（31），其终止于具有围绕孔口（25）的表面（90）的孔口（25）中。 沟槽（17）与打印头表面（90）相对设置，用于收集从孔口（25）喷出的墨滴（100）。 清洁组件（170）包括限定具有适于与打印头表面（90）接触的开口端（195）的空腔（197）的杯（190）。 流入通道（210）提供用于清洁液体经由间隙（220）流入空腔（197）的入口通道。 流出通道提供用于从空腔（197）流动清洁液体的出口路径。 流入通道（210）和流出通道布置成将清洁液体的流动引导到打印头表面（90）和孔（25）之间的空腔（197）中，使得污染物从打印头表面（90 ）和孔（25）。

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：US06196657B1

公开(公告)日：2001-03-06

申请号：US09334374

申请日：1999-06-16

申请人： Gilbert A. Hawkins ,  Michael E. Meichle ,  Ravi Sharma

发明人： Gilbert A. Hawkins ,  Michael E. Meichle ,  Ravi Sharma

IPC分类号： B41J2165

CPC分类号： B41J2/16552 ,  B41J2/185

摘要： Multi-fluidic cleaning for an ink jet print head (10) and a method for assembling the same. The print head (10) has a surface (14) defining at least one orifice (16) therethrough, the at least one orifice (16) being susceptible to being obstructed by contaminants. A cleaning assembly (22) of the invention is disposed proximate the surface (14) for directing a flow of fluid along the surface (14) and across the at least one orifice (16) to clean contaminants from the surface (14) and the at least one orifice (16). The cleaning assembly (22) includes a cup (24) sealingly surrounding the at least one orifice (16), the cup (24) defining a cavity (26) therein. The cleaning assembly (22) further includes a valve system (32) in fluid communication with the cavity (26) for allowing a fluid flow stream (44) consisting of alternating segments (46,48,50) of at least one liquid cleaning agent from a liquid cleaning agent source (40,42) and another element such as a gas from a gas source (38) or a second liquid cleaning agent from a liquid cleaning agent source (40,42) into the cavity (26).

摘要翻译： 用于喷墨打印头（10）的多流体清洁及其组装方法。 打印头（10）具有限定穿过其中的至少一个孔口（16）的表面（14），所述至少一个孔口（16）易受到污染物的阻碍。 本发明的清洁组件（22）设置在表面（14）附近，用于沿着表面（14）引导流体流动并穿过至少一个孔口（16）以清洁来自表面（14）的污染物 至少一个孔口（16）。 清洁组件（22）包括密封地围绕所述至少一个孔（16）的杯（24），所述杯（24）在其中限定空腔（26）。 清洁组件（22）还包括与空腔（26）流体连通的阀系统（32），用于允许由至少一种液体清洁剂的交替段（46,48,50）组成的流体流动流（44） 从液体清洁剂源（40,42）和另一种元素例如来自气体源（38）的气体或第二液体清洁剂从液体清洁剂源（40,42）进入空腔（26）。