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1. 发明授权

US06817702B2 Tapered multi-layer thermal actuator and method of operating same 失效
公开(公告)号：US06817702B2
公开(公告)日：2004-11-16
申请号：US10293982
申请日：2002-11-13
申请人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
发明人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
IPC分类号： B41J205
CPC分类号： B41J2/14427 , B41J2/1628 , B41J2/1631 , B41J2/1648
摘要： An apparatus for and method of operating a thermal actuator for a micromechanical device, especially a liquid drop emitter such as an ink jet printhead, is disclosed. The disclosed thermal actuator comprises a base element and a cantilevered element including a thermo-mechanical bender portion extending from the base element to a free end tip. The thermo-mechanical bender portion includes a barrier layer constructed of a dielectric material having low thermal conductivity, a first deflector layer constructed of a first electrically resistive material having a large coefficient of thermal expansion, and a second deflector layer constructed of a second electrically resistive material having a large coefficient of thermal expansion wherein the barrier layer is bonded between the first and second deflector layers. The thermo-mechanical bender portion further has a base end and base end width, wb, adjacent the base element, and a free end and free end width, wf, adjacent the free end tip, wherein the base end width is substantially greater than the free end width. A first heater resistor is formed in the first deflector layer and adapted to apply heat energy having a first spatial thermal pattern which results in a first deflector layer base end temperature increase, &Dgr;T1b, that is greater than a first deflector layer free end temperature increase, &Dgr;T1f. A second heater resistor is formed in the second deflector layer and adapted to apply heat energy having a second spatial thermal pattern which results in a second deflector layer base end temperature increase, &Dgr;T2b that is greater than a second deflector layer free end temperature increase, &Dgr;T2f. Application of an electrical pulse to either the first or second heater resistors causes deflection of the cantilevered element, followed by restoration of the cantilevered element to an initial position as heat diffuses through the barrier layer and the cantilevered element reaches a uniform temperature. For liquid drop emitter embodiments, the thermal actuator resides in a liquid-filled chamber that includes a nozzle for ejecting liquid. Application of electrical pulses to the heater resistors is used to adjust the characteristics of liquid drop emission. The barrier layer exhibits a heat transfer time constant &tgr;B. The thermal actuator is activated by a heat pulses of duration &tgr;P wherein &tgr;P

2. 发明授权

US06896346B2 Thermo-mechanical actuator drop-on-demand apparatus and method with multiple drop volumes 失效
公开(公告)号：US06896346B2
公开(公告)日：2005-05-24
申请号：US10329566
申请日：2002-12-26
申请人： David P. Trauernicht , John A. Lebens , Stephen F. Pond
发明人： David P. Trauernicht , John A. Lebens , Stephen F. Pond
IPC分类号： B41J2/045 , B41J2/05 , B41J2/055 , B41J2/14 , B41J2/16 , B41J29/38
CPC分类号： B41J2/04573 , B41J2/04585 , B41J2/04588 , B41J2/0459 , B41J2/04591 , B41J2/04593 , B41J2/14427 , B41J2/1628 , B41J2/1639 , B41J2/1642 , B41J2/1648
摘要： An apparatus and method of operating a liquid drop emitter, such as an ink jet device, for emitting liquid drops of different volumes. The liquid drop emitter comprises a chamber, filled with a liquid, having a nozzle for emitting drops of the liquid, a thermo-mechanical actuator having a moveable portion within the chamber for applying pressure to the liquid at the nozzle, and apparatus adapted to apply heat pulses to the thermo-mechanical actuator. The method for operating comprises applying a first heat pulse having a first power P1, first pulse duration τp1, and first energy E1=P1×τp1, displacing the movable portion of the actuator so that a drop is emitted having a first drop volume Vd1, and traveling substantially at the target velocity v0; and applying a second heat pulse having a second power P2, second pulse duration τp2, and second energy E2=P2×τp2, displacing the movable portion of the actuator so that a drop is emitted having a second drop volume Vd2 and traveling substantially at the target velocity v0, wherein Vd2>Vd1, E2>E1, τp2>τp1, and P2

3. 发明授权

US07033000B2 Tapered multi-layer thermal actuator and method of operating same 失效
标题翻译：锥形多层热致动器及其操作方法
公开(公告)号：US07033000B2
公开(公告)日：2006-04-25
申请号：US10953401
申请日：2004-09-29
申请人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
发明人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
IPC分类号： B41J2/05 , B41J2/04
CPC分类号： B41J2/14427 , B41J2/1628 , B41J2/1631 , B41J2/1648
摘要： An apparatus for and method of operating a thermal actuator for a micromechanical device, especially a liquid drop emitter for use in an ink jet printhead, is disclosed. The disclosed thermal actuator includes a base element and a cantilevered element including a thermo-mechanical bender portion extending from the base element to a free end tip. The thermo-mechanical bender portion includes a barrier layer constructed of a dielectric material having low thermal conductivity, a first deflector layer constructed of a first electrically resistive material having a large coefficient of thermal expansion, and a second deflector layer constructed of a second electrically resistive material having a large coefficient of thermal expansion wherein the barrier layer is bonded between the first and second deflector layers.
摘要翻译：公开了一种操作用于微机械装置的热致动器的装置和方法，特别是用于喷墨打印头的液滴发射器。所公开的热致动器包括基部元件和悬臂元件，其包括从基部元件延伸到自由端尖端的热机械弯曲部分。热机械弯曲部分包括由具有低热导率的介电材料构成的阻挡层，由具有大的热膨胀系数的第一电阻材料构成的第一偏转器层和由第二电阻构成的第二偏转器层具有大的热膨胀系数的材料，其中阻挡层结合在第一和第二偏转器层之间。

4. 发明授权

US07029101B2 Tapered multi-layer thermal actuator and method of operating same 失效
标题翻译：锥形多层热致动器及其操作方法
公开(公告)号：US07029101B2
公开(公告)日：2006-04-18
申请号：US10953398
申请日：2004-09-29
申请人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
发明人： Christopher N. Delametter , Edward P. Furlani , John A. Lebens , David P. Trauernicht , Antonio Cabal , David S. Ross , Stephen F. Pond
IPC分类号： B41J2/05 , B41J2/04
CPC分类号： B41J2/14427 , B41J2/1628 , B41J2/1631 , B41J2/1648
摘要： An apparatus for and method of operating a thermal actuator for a micromechanical device, especially a liquid drop emitter for use in an ink jet printhead, is disclosed. The disclosed thermal actuator includes a base element and a cantilevered element including a thermo-mechanical bender portion extending from the base element to a free end tip. The thermo-mechanical bender portion includes a barrier layer constructed of a dielectric material having low thermal conductivity, a first deflector layer constructed of a first electrically resistive material having a large coefficient of thermal expansion, and a second deflector layer constructed of a second electrically resistive material having a large coefficient of thermal expansion wherein the baffler layer is bonded between the first and second deflector layers.
摘要翻译：公开了一种操作用于微机械装置的热致动器的装置和方法，特别是用于喷墨打印头的液滴发射器。所公开的热致动器包括基部元件和悬臂元件，其包括从基部元件延伸到自由端尖端的热机械弯曲部分。热机械弯曲部分包括由具有低热导率的介电材料构成的阻挡层，由具有大的热膨胀系数的第一电阻材料构成的第一偏转器层和由第二电阻构成的第二偏转器层具有大的热膨胀系数的材料，其中挡板层结合在第一和第二偏转器层之间。

5. 发明授权

US06824249B2 Tapered thermal actuator 失效
公开(公告)号：US06824249B2
公开(公告)日：2004-11-30
申请号：US10227079
申请日：2002-08-23
申请人： Christopher N. Delametter , David P. Trauernicht , John A. Lebens , Edward P. Furlani , Stephen F. Pond
发明人： Christopher N. Delametter , David P. Trauernicht , John A. Lebens , Edward P. Furlani , Stephen F. Pond
IPC分类号： B41J204
CPC分类号： B41J2/14427
摘要： An apparatus for a thermal actuator for a micromechanical device, especially a liquid drop emitter such as an ink jet printhead, is disclosed. The disclosed thermal actuator comprises a base element and a cantilevered element including a thermo-mechanical bending portion extending from the base element and a free end portion residing in a first position. The thermo-mechanical bending portion has a base end width, wb, adjacent the base element and a free end width, wf, adjacent the free end portion wherein the base end width is substantially greater than the free end width. The thermal actuator further comprises apparatus adapted to apply a heat pulse directly to the thermo-mechanical bending portion causing the deflection of the free end portion of the cantilevered element to a second position. The width of the thermo-mechanical bending portion may reduce substantially monotonically as a function of the distance away from the base element or in at least one step reduction. The apparatus adapted to apply a heat pulse may comprise a thin film resistor. Alternatively, the thermo-mechanical bending portion may comprise a layer of electrically resistive material having a heater resistor formed therein to which is applied an electrical pulse to cause rapid deflection of the free end portion and ejection of a liquid drop.

6. 发明授权

US06820964B2 Tapered thermal actuator 失效
标题翻译：锥形热致动器
公开(公告)号：US06820964B2
公开(公告)日：2004-11-23
申请号：US10293077
申请日：2002-11-13
申请人： Christopher N. Delametter , David P. Trauernicht , John A. Lebens , Edward P. Furlani , Stephen F. Pond
发明人： Christopher N. Delametter , David P. Trauernicht , John A. Lebens , Edward P. Furlani , Stephen F. Pond
IPC分类号： B41J204
CPC分类号： B41J2/14427
摘要： An apparatus for a thermal actuator for a micromechanical device, especially a liquid drop emitter such as an ink jet printhead, is disclosed. The disclosed thermal actuator comprises a base element and a cantilevered element including a thermo-mechanical bending portion extending from the base element and a free end portion residing in a first position. The thermo-mechanical bending portion has a base end width, wb, adjacent the base element and a free end width, wf, adjacent the free end portion wherein the base end width is substantially greater than the free end width. The thermal actuator further comprises apparatus adapted to apply a heat pulse directly to the thermo-mechanical bending portion causing the deflection of the free end portion of the cantilevered element to a second position. The width of the thermo-mechanical bending portion may reduce substantially quadratically or in an inverse power fashion as a function of the distance away from the base element or in at least one step reduction. The apparatus adapted to apply a heat pulse may comprise a thin film resistor. Alternatively, the thermo-mechanical bending portion may comprise a layer of electrically resistive material having a heater resistor formed therein to which is applied an electrical pulse to cause rapid deflection of the free end portion and ejection of a liquid drop.
摘要翻译：公开了一种用于微机械装置的热致动器的装置，特别是诸如喷墨打印头的液滴发射器。所公开的热致动器包括基座元件和悬臂元件，悬臂元件包括从基座元件延伸的热机械弯曲部分和位于第一位置的自由端部分。热机械弯曲部分具有与基部元件相邻的基端宽度wb和邻近自由端部分的自由端宽度wf，其中基端宽度基本上大于自由端宽度。热致动器还包括适于将热脉冲直接施加到热机械弯曲部分的装置，导致悬臂元件的自由端部偏转到第二位置。热机械弯曲部分的宽度可以基于距离基部元件的距离或者至少一个阶梯减小的函数基本上二次或以反向功率方式减小。适于施加加热脉冲的装置可以包括薄膜电阻器。或者，热机械弯曲部分可以包括具有形成在其中的加热电阻器的电阻材料层，其上施加电脉冲以引起自由端部分的快速偏转和液滴的喷射。

7. 发明授权

US07011394B2 Liquid drop emitter with reduced surface temperature actuator 失效
标题翻译：具有降低表面温度执行器的液滴发射器
公开(公告)号：US07011394B2
公开(公告)日：2006-03-14
申请号：US10650873
申请日：2003-08-28
申请人： Antonio Cabal , John A. Lebens , Stephen F. Pond
发明人： Antonio Cabal , John A. Lebens , Stephen F. Pond
IPC分类号： B41J2/04
CPC分类号： B41J2/14427 , B41J2/1628 , B41J2/1639 , B41J2/1645 , B41J2/1646 , B41J2/1648
摘要： An apparatus for a liquid drop emitter, especially for use in an ink jet printhead, is disclosed. A chamber filled with a liquid, a nozzle and a thermo-mechanical actuator, extending into the chamber from at least one wall of the chamber is disclosed. A movable element of the thermo-mechanical actuator is configured with a bending portion which bends when heated. The bending portion comprises a first layer having first and second sides, constructed of a first material having a high coefficient of thermal expansion, a second layer, attached to the second side of the first layer, and a third layer, attached to the first side of the first layer, constructed of a third material having a low thermal conductivity and a low Young's modulus. Apparatus is adapted to apply heat pulses to the bending portion resulting in rapid deflection of the movable element, ejection of a liquid drop, without degradation or vaporization of the liquid. The third material may be an organic polymer having a Young's modulus less than 10 GPa and thermal conductivity less than 1 W/(m ° K), for example PTFE, teflon.
摘要翻译：公开了一种用于液滴发射器的装置，特别用于喷墨打印头。公开了一种充满液体，喷嘴和热机械致动器的室，其从室的至少一个壁延伸到室中。热机械致动器的可移动元件构造有弯曲部分，其在加热时弯曲。弯曲部分包括具有第一和第二侧面的第一层，由具有高热膨胀系数的第一材料构成，附接到第一层的第二侧的第二层和附着到第一层的第三层的第一层由具有低热导率和低杨氏模量的第三材料构成。设备适于将热脉冲施加到弯曲部分，导致可移动元件的快速偏转，液滴的喷射，而不会降低或蒸发液体。第三种材料可以是具有小于10GPa的杨氏模量和小于1W /（m°K）的热导率的有机聚合物，例如PTFE，特氟隆。

8. 发明授权

US08287066B2 Ink jet printing method 有权
标题翻译：喷墨打印方式
公开(公告)号：US08287066B2
公开(公告)日：2012-10-16
申请号：US12530854
申请日：2008-03-14
申请人： Christian Jackson , Stephen F. Pond
发明人： Christian Jackson , Stephen F. Pond
IPC分类号： B41J29/38 , B41J29/393 , B41J2/165
CPC分类号： B41J29/393 , B41J2/2139
摘要： This invention pertains to a drop-on-demand ink jet printing method, more particularly to a method of printing wherein a purge image is logically combined with a selected image so as to insure a desired amount of drop firing from every jet of an ink jet printhead for every page printed. The inventive method avoids image defects that could otherwise occur as a result of faulty drop firing from infrequently used nozzles. Purge image data that specifies the deposition of at least one ink dot on at least one predetermined pixel location on each of the plurality of image scanlines is constructed and stored in a purge image memory accessible by the printing apparatus. Imperceptible purge image patterns are constructed having blue noise spatial frequency characteristics and optical density levels equal to or less than 0.01 OD above print medium base OD. A plurality of purge image data sets are constructed and stored for retrieval to adapt to a variety of conditions. Acceptable purge image data sets are determined using a purge performance image as a test pattern which is optically scanned or analyzed by user observation. The present invention further include numerous printing apparatus configured to implement the disclosed methods of maintaining ink jet printheads.
摘要翻译：本发明涉及一种按需喷墨打印方法，更具体地说涉及一种打印方法，其中吹扫图像与所选择的图像逻辑组合，以便确保每个喷墨喷嘴所需的液滴点火量每页印刷的打印头。本发明的方法避免了由于不经常使用的喷嘴发生故障滴落而导致的图像缺陷。清除指定在多个图像扫描线中的每一个上的至少一个预定像素位置上沉积至少一个墨点的图像数据，并将其存储在由打印设备访问的清除图像存储器中。不可见的净化图像图案被构造成具有等于或小于打印介质基底OD以上0.01OD的蓝色噪声空间频率特性和光密度水平。多个清除图像数据组被构造和存储用于检索以适应各种条件。使用清洗性能图像作为通过用户观察光学扫描或分析的测试图案来确定可接受的清除图像数据集。本发明还包括构造成实现所公开的维持喷墨打印头的方法的许多印刷装置。

9. 发明授权

US08226199B2 Ink jet break-off length measurement apparatus and method 有权
标题翻译：喷墨断裂长度测量装置和方法
公开(公告)号：US08226199B2
公开(公告)日：2012-07-24
申请号：US12243325
申请日：2008-10-01
申请人： Gilbert A. Hawkins , Michael J. Piatt , John C. Brazas , Stephen F. Pond
发明人： Gilbert A. Hawkins , Michael J. Piatt , John C. Brazas , Stephen F. Pond
IPC分类号： B41J29/393
CPC分类号： B41J2/03 , B41J2002/022 , B41J2002/033 , B41J2202/13 , B41J2202/16
摘要： A jet break-off length measurement apparatus for a continuous liquid drop emission system is provided. The jet break-off length measurement apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle for emitting a continuous stream of liquid. Heater resistor apparatus is adapted to transfer pulses of thermal energy to the liquid in flow communication with the at least one nozzle sufficient to cause the break-off of the at least one continuous stream of liquid into a stream of drops of predetermined volumes. A sensing apparatus adapted to detect the stream of drops of predetermined volumes is provided. A control apparatus is adapted to determine a characteristic of the stream of drops of predetermined volumes that is related to the break-off length. Further apparatus is adapted to inductively charge at least one drop and to cause electric field deflection of charged drops. Jet stimulation apparatus comprising a plurality of transducers corresponding to the plurality of nozzles and adapted to transfer pulses of energy to the liquid sufficient to cause the break-off of the plurality of continuous streams of liquid into a plurality of streams of drops of predetermined volumes is also disclosed. Methods of measuring the jet break-off length using phase sensitive amplification circuitry are disclosed.
摘要翻译：提供一种用于连续液滴发射系统的射流断裂长度测量装置。射流断裂长度测量装置包括液滴发射器，其包含与至少一个喷嘴流动连通的正压液体，用于发射连续的液体流。加热器电阻器装置适于将热能的脉冲传送到与至少一个喷嘴流动连通的液体，足以使至少一个连续的液体流分解成预定体积的液滴流。提供了适于检测预定体积的液滴流的感测装置。控制装置适于确定与断裂长度相关的预定体积的液滴流的特性。进一步的装置适于对至少一滴进行电感充电并引起带电液滴的电场偏转。喷射刺激装置包括对应于多个喷嘴的多个换能器并且适于将足够的能量脉冲转移到液体，以使多个连续的液体流分解成多个预定体积的液滴流，也披露。公开了使用相位敏感放大电路测量射流断裂长度的方法。

10. 发明授权

US08087740B2 Continuous ink jet apparatus and method using a plurality of break-off times 有权
标题翻译：连续喷墨装置和使用多个断开时间的方法
公开(公告)号：US08087740B2
公开(公告)日：2012-01-03
申请号：US12690954
申请日：2010-01-21
申请人： Michael J. Piatt , Stephen F. Pond , James A. Katerberg , Randy D. Vandagriff
发明人： Michael J. Piatt , Stephen F. Pond , James A. Katerberg , Randy D. Vandagriff
IPC分类号： B41J29/38 , B41J2/07
CPC分类号： B41J2/03 , B41J2002/022 , B41J2002/033 , B41J2202/12 , B41J2202/16
摘要： A method of operating a continuous liquid drop emission apparatus includes providing a liquid drop emitter that emits a plurality of continuous streams of liquid through a plurality of nozzles. A jet stimulation apparatus transfers energy to the liquid sufficient to cause the break-off of the plurality of continuous streams of liquid at a plurality of predetermined break-off times into a plurality of streams of drops of predetermined volumes. Sensing apparatus measures a characteristic value for each of the plurality of streams of drops of predetermined volumes. Control apparatus provides a plurality of break-off time setting signals to the jet stimulation apparatus to cause the plurality of predetermined break-off times to be determined by the characteristic value of each of the plurality of streams of drops of predetermined volumes.
摘要翻译：操作连续液滴发射装置的方法包括提供液滴发射器，其通过多个喷嘴发射多个连续的液体流。射流刺激装置将能量传递到液体，足以使多个连续的液体流在多个预定的断开时间被分解成多个预定体积的液滴流。感测装置测量预定体积的多个液滴流中的每一个的特征值。控制装置向喷射刺激装置提供多个断开时间设定信号，以通过多个预定量的液滴流的特征值来确定多个预定的断开时间。

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