公开(公告)号：US06497472B2

公开(公告)日：2002-12-24

申请号：US09751236

申请日：2000-12-29

申请人： Ravi Sharma ,  Michael E. Meichle ,  Gilbert A. Hawkins ,  Omid Moghadam ,  John A. Quenin

发明人： Ravi Sharma ,  Michael E. Meichle ,  Gilbert A. Hawkins ,  Omid Moghadam ,  John A. Quenin

IPC分类号： B41J2165

CPC分类号： B41J2/16544 ,  B41J2/16552

摘要： According to one embodiment of the present invention, a print head comprises a print head body defining an interior chamber and an orifice plate. The orifice plate has an outer surface and further defines a cleaning fluid orifice through the orifice plate for conducting a flow of a cleaning fluid through the cleaning fluid orifice and onto an outer surface of said orifice plate. The orifice plate also defines a drain orifice for conducting a flow of cleaning fluid from the surface to the interior chamber. A supply of pressurized cleaning fluid is disposed in said cavity and connected to the cleaning fluid passageway. During cleaning operations, the fluid flow system defines a flow of a cleaning fluid from the passageway and onto said outer surface. The drain orifice receives cleaning fluid from the outer surface and channels the cleaning fluid into the fluid return.

摘要翻译： 根据本发明的一个实施例，打印头包括限定内部腔室和孔板的打印头本体。 孔板具有外表面并且进一步限定通过孔板的清洁流体孔口，用于使清洁流体流过清洁流体孔口并进入所述孔板的外表面。 孔板还限定了用于将清洁流体从表面传导到内部室的排水孔。 供应的加压清洗流体设置在所述空腔中并连接到清洁流体通道。 在清洁操作期间，流体流动系统限定清洁流体从通道到所述外表面的流动。 排水孔从外表面接收清洁流体并将清洁流体引导到流体回流中。

公开(公告)号：US06435840B1

公开(公告)日：2002-08-20

申请号：US09747215

申请日：2000-12-21

申请人： Ravi Sharma ,  Jeffrey I. Hirsh ,  Gilbert A. Hawkins

发明人： Ravi Sharma ,  Jeffrey I. Hirsh ,  Gilbert A. Hawkins

IPC分类号： F04B1700

CPC分类号： F04B43/043 ,  F04B43/082 ,  F04B43/12

摘要： An electrostrictive micro-pump is provided for controlling a fluid flow through a cannula or other narrow liquid conduit. The micro-pump includes a pump body having a passageway for conducting a flow of fluid, a pump element formed from a piece of viscoelastic material and disposed in the passageway, and a control assembly coupled to the viscoelastic material for electrostatically inducing a peristaltic wave along the longitudinal axis of the pump element to displace fluid disposed within the pump body. The control assembly includes a pair of electrodes disposed over upper and lower sides of the pump element. The lower electrode is formed from a plurality of uniformly spaced conductive panels, while the upper electrode is a single sheet of conductive material. A switching circuit is provided for actuating the conductive panels of the lower electrode in serial, multiplex fashion to induce a peristaltic pumping action.

摘要翻译： 提供了一种电致伸缩微型泵，用于控制通过套管或其他窄液体导管的流体流动。 微泵包括具有用于引导流体流动的通道的泵体，由粘弹性材料片形成并设置在通道中的泵元件，以及耦合到粘弹性材料的控制组件，用于静电诱导蠕动波 泵元件的纵向轴线以置换设置在泵体内的流体。 控制组件包括设置在泵元件的上侧和下侧上的一对电极。 下电极由多个均匀间隔的导电板形成，而上电极是单片导电材料。 提供了一种开关电路，用于以多重方式串联地驱动下部电极的导电板，以引起蠕动泵送作用。

公开(公告)号：US06382254B1

公开(公告)日：2002-05-07

申请号：US09735322

申请日：2000-12-12

申请人： Zhihao Yang ,  Ravi Sharma

发明人： Zhihao Yang ,  Ravi Sharma

IPC分类号： F15B2100

CPC分类号： F16K99/0001 ,  A61M5/16881 ,  A61M2205/0244 ,  B01J2219/00891 ,  F15C5/00 ,  F16K99/0036 ,  F16K2099/0074 ,  F16K2099/0078 ,  F16K2099/0084 ,  Y10T137/2082 ,  Y10T137/2196 ,  Y10T137/6606

摘要： A microfluidic valve for controlling the flow of a material through a microfluidic channel comprising: a) a microfluidic channel comprising a passageway, b) a heater in contact with at least a portion of the microfluidic channel, c) a carrier fluid comprising the material and an amount of thermally-responsive material so that the carrier fluid can be thickened by heat from the heater to cause a reduction in flow of the carrier fluid through the microfluidic channel.

摘要翻译： 一种用于控制材料通过微流体通道的流动的微流体阀，包括：a）包含通道的微流体通道，b）与所述微流体通道的至少一部分接触的加热器，c）包含所述材料和 一定量的热响应材料，使得载体流体可以通过来自加热器的热量而增厚，从而导致载流子通过微流体通道的流动减少。

公开(公告)号：US06364459B1

公开(公告)日：2002-04-02

申请号：US09412148

申请日：1999-10-05

申请人： Ravi Sharma ,  Nicholas L. Abbott

发明人： Ravi Sharma ,  Nicholas L. Abbott

IPC分类号： B41J214

CPC分类号： B41J2/14137 ,  B41J2/005 ,  B41J2/145

摘要： A printing apparatus in the form of an inkjet printer and a printing method utilizes a light-activated ink release system. The apparatus includes at least one nozzle having an ink body that is comprised of light-sensitive ink. The ink can form an unextended droplet meniscus. By directing a light beam onto the unextended droplet meniscus, the surface tension of the light-sensitive ink decreases, and provides for an extended droplet meniscus. The formation of the extended meniscus droplet meniscus permits the transfer of ink to a receiver or media.

摘要翻译： 喷墨打印机和打印方法形式的打印装置利用光活化油墨释放系统。 该装置包括至少一个具有由感光墨水构成的墨体的喷嘴。 油墨可以形成未延伸的液滴弯液面。 通过将光束引导到未延伸的液滴弯月面上，感光墨水的表面张力降低，并提供延伸的液滴弯液面。 延伸弯液面液滴弯液面的形成允许将油墨转移到接收器或介质。

公开(公告)号：US06352337B1

公开(公告)日：2002-03-05

申请号：US09708354

申请日：2000-11-08

申请人： Ravi Sharma

发明人： Ravi Sharma

IPC分类号： B41J205

CPC分类号： B41J2/14427 ,  B41J2002/043

摘要： A droplet generator is provided that is particularly adapted for generating micro droplets of ink on demand in an inkjet print head having a plurality of nozzles. The droplet generator includes a droplet separator formed from the combination of a droplet assistor and a droplet initiator. The droplet assistor is coupled to ink in each of the nozzles and functions to lower the amount of energy necessary for an ink droplet to form and separate from an ink meniscus extending across the nozzle outlet. The droplet assistor may be, for example, a heater or surfactant supply mechanism for lowering the surface tension of the ink meniscus. Alternatively, the droplet assistor may be a mechanical oscillator such as a piezoelectric transducer that generates oscillations in the ink sufficient to periodically form convex ink menisci across the nozzle outlets, but insufficient to cause ink droplets to separate from the outlets. The droplet initiator cooperates with the droplet assistor and selectively causes an ink droplet to form and separate from the ink meniscus. The droplet initiator may be, for example, a thermally-actuated paddle. The droplet separator increases the speed and accuracy of ink micro droplets expelled from the print head nozzles.

摘要翻译： 提供一种液滴发生器，其特别适用于在具有多个喷嘴的喷墨打印头中根据需要产生墨滴微滴。 液滴发生器包括由液滴组合物和液滴引发剂的组合形成的液滴分离器。 液滴组合器耦合到每个喷嘴中的油墨，并且用于降低墨滴形成并与从喷嘴出口延伸的油墨弯液面分离所需的能量的量。 液滴组合器可以是例如用于降低油墨弯液面的表面张力的加热器或表面活性剂供给机构。 或者，液滴组合器可以是诸如压电换能器的机械振荡器，其在油墨中产生足够的周期性地在喷嘴出口周围形成凸形墨水半月板的振荡，但不足以使墨滴与出口分离。 液滴引发剂与液滴组合物配合，并选择性地使油墨液滴形成并与油墨弯液面分离。 液滴引发剂可以是例如热致动桨。 液滴分离器增加从打印头喷嘴排出的墨微滴的速度和精度。

公开(公告)号：US06347858B1

公开(公告)日：2002-02-19

申请号：US09195727

申请日：1998-11-18

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

CPC分类号： B41J2/16547 ,  B41J2/16552 ,  B41J2/16585

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.

摘要翻译： 具有清洁机构的喷墨打印机及其组装方法。 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。 能够密封地围绕至少一个孔的真空罩具有通过其的第一通道，该第一通道能够与孔连通，用于通过孔从墨水通道吸收污染物。 溶剂输送擦拭器连接到罩，并且具有通过其与表面对准的第二通道。 第二通道将液体溶剂输送到表面以从表面冲洗污染物。 表面上的污染物被夹带在溶剂中，而刮水器则从表面冲洗污染物。 真空罩连接到刮水器，并且具有通过其与表面对准的第三通道。 树冠真空吸附溶剂并从表面吸入杂质。 此外，管道电路与打印头相关联，用于从溶剂中过滤颗粒物质，并将清洁溶剂再循环到打印头的表面。

公开(公告)号：US06183057B2

公开(公告)日：2001-02-06

申请号：US09206272

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： B41J2165

CPC分类号： B41J2/16585 ,  B41J2/16552

摘要： Self-cleaning printer with reverse fluid flow and ultrasonics 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. Moreover, an ultrasonic transducer induces pressure waves in the fluid to dislodge the contaminant and thus clean the surface and/or orifice.

摘要翻译： 具有反向流体和超声波的自清洁打印机以及组装打印机的方法。 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。 此外，超声换能器在流体中引起压力波，以排除污染物并因此清洁表面和/或孔。

公开(公告)号：US09015509B2

公开(公告)日：2015-04-21

申请号：US13362930

申请日：2012-01-31

申请人： Gyudong Kim ,  Eungu Kim ,  Min-Kyu Kim ,  Daeyun Shim ,  Ravi Sharma ,  Myounghwan Kim ,  Jaeryon Lee

发明人： Gyudong Kim ,  Eungu Kim ,  Min-Kyu Kim ,  Daeyun Shim ,  Ravi Sharma ,  Myounghwan Kim ,  Jaeryon Lee

IPC分类号： G06F1/32

CPC分类号： G06F1/3287 ,  G06F1/3246 ,  G06F1/3293 ,  Y02D10/122 ,  Y02D10/171 ,  Y02D50/20

摘要： Embodiments of the invention are generally directed to a low power standby mode control circuit. An embodiment of an apparatus includes a processor, an interface for a connection with a second apparatus, and an operational circuit, wherein the processor is to disable one or more power connections to the operational circuit in a standby mode. The apparatus further includes a standby mode control circuit, the standby control circuit to operate using a standby power source, wherein the standby mode control circuit is to detect a stimulus signal from the second apparatus and in response to the stimulus signal the standby control circuit is to signal the processor, the processor to enable the one or more power connections of the operational circuit.

摘要翻译： 本发明的实施例通常涉及低功率待机模式控制电路。 装置的实施例包括处理器，用于与第二装置的连接的接口和操作电路，其中处理器在待机模式下禁用与操作电路的一个或多个电源连接。 该设备还包括备用模式控制电路，待机控制电路使用待机电源进行操作，其中待机模式控制电路将检测来自第二设备的激励信号，并且响应于激励信号，备用控制电路为 为了向处理器发信号，处理器启用操作电路的一个或多个电源连接。

公开(公告)号：US08809657B2

公开(公告)日：2014-08-19

申请号：US13066588

申请日：2011-04-18

申请人： Ravi Sharma

发明人： Ravi Sharma

IPC分类号： G10C3/12

摘要： An electronic keyboard instrument is provided and methods of playing and assembling the same. The instrument comprises a controller for enabling activation of electronic signals having audible, visible, amplifiable, recordable and/or like characteristics, and a power source for operating the controller. A first keyboard is provided having a first selected length and being oriented in a first direction such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a first hand of one or more users. A second keyboard with a second selected length is generally coextensive with and oriented generally opposite to the first such that (i) audible notes of music from at least one internal sound module and/or at least one external sound module, (ii) recordable data to be enhanced or modified by an external sequencer or program controlled apparatus, (iii) photoelectric signals, and (iv) processes or mechanisms, triggered or controlled by external signals or data, for controlling machines, video playback or lighting, and/or the like may be generated and/or activated using a second hand of the one or more users. In addition, an interface connects the controller to at least one external device having sound module, and/or sequencing and signal enhancement functions. A plurality of peripheral devices operatively connected thereto permit interactive control and manipulation of the signals. Finally, a wearable support is mounted to the instrument for suspending the first and second keyboards from the user's body during instrument operation. Alternatively, the instrument is suspended by a support structure in a generally horizontal fashion for simultaneous operation by multiple users.

公开(公告)号：US20120204048A1

公开(公告)日：2012-08-09

申请号：US13362930

申请日：2012-01-31

申请人： Gyudong Kim ,  Eungu Kim ,  Min-Kyu Kim ,  Daeyun Shim ,  Ravi Sharma ,  Myounghwan Kim ,  Jaeryon Lee

发明人： Gyudong Kim ,  Eungu Kim ,  Min-Kyu Kim ,  Daeyun Shim ,  Ravi Sharma ,  Myounghwan Kim ,  Jaeryon Lee

IPC分类号： G06F1/32

CPC分类号： G06F1/3287 ,  G06F1/3246 ,  G06F1/3293 ,  Y02D10/122 ,  Y02D10/171 ,  Y02D50/20

摘要： Embodiments of the invention are generally directed to a low power standby mode control circuit. An embodiment of an apparatus includes a processor, an interface for a connection with a second apparatus, and an operational circuit, wherein the processor is to disable one or more power connections to the operational circuit in a standby mode. The apparatus further includes a standby mode control circuit, the standby control circuit to operate using a standby power source, wherein the standby mode control circuit is to detect a stimulus signal from the second apparatus and in response to the stimulus signal the standby control circuit is to signal the processor, the processor to enable the one or more power connections of the operational circuit.

摘要翻译： 本发明的实施例通常涉及低功率待机模式控制电路。 装置的实施例包括处理器，用于与第二装置的连接的接口和操作电路，其中处理器在待机模式下禁用与操作电路的一个或多个电源连接。 该设备还包括备用模式控制电路，待机控制电路使用待机电源进行操作，其中待机模式控制电路将检测来自第二设备的激励信号，并且响应于激励信号，备用控制电路为 为了向处理器发信号，处理器启用操作电路的一个或多个电源连接。