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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.
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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。
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公开(公告)号：US06721020B1
公开(公告)日：2004-04-13
申请号：US10293653
申请日：2002-11-13
IPC分类号： B41J204
CPC分类号： B41J2/04573 , B41J2/04585 , B41J2/04588 , B41J2/14427 , B41J2/1628 , B41J2/1639 , B41J2/1646 , 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 adjacent the base element and a free end adjacent the free end tip. 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
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公开(公告)号：US06554389B1
公开(公告)日：2003-04-29
申请号：US10023248
申请日：2001-12-17
IPC分类号： B41J29393
CPC分类号： B41J2/03 , B41J2/14 , B41J2202/02
摘要： An apparatus for controlling errant ink drops in an inkjet printer having a plurality of nozzles for ejecting ink drops along a droplet trajectory and printing the ejected ink drops onto a receiver, including: at least one airflow channel arranged to provide a non-uniform airflow pattern located along a portion of the droplet trajectory, wherein the apparatus is in close proximity to the plurality of nozzles and prior to the receiver, such that the non-uniform airflow pattern provides compensation for errors in the printing of the ejected ink drops on the receiver and means for moving air in the airflow channel.
摘要翻译： 一种用于控制喷墨打印机中的错误墨滴的装置，具有多个喷嘴，用于沿着液滴轨迹喷射墨滴，并将喷射的墨滴打印到接收器上，包括：至少一个气流通道，其布置成提供不均匀的气流模式 沿着液滴轨迹的一部分定位，其中该装置紧邻多个喷嘴并且在接收器之前，使得不均匀的气流模式为接收器上喷射的墨滴的打印错误提供补偿 以及用于在气流通道中移动空气的装置。
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85.发明授权Incorporation of supplementary heaters in the ink channels of CMOS/MEMS integrated ink jet print head and method of forming same 失效在CMOS / MEMS集成喷墨打印头的墨水通道中加入辅助加热器及其形成方法公开(公告)号：US06412928B1
公开(公告)日：2002-07-02
申请号：US09751115
申请日：2000-12-29
IPC分类号： B41J202
CPC分类号： B41J2/03 , B41J2/105 , B41J2002/032 , B41J2202/13 , B41J2202/16 , B41J2202/22
摘要： An ink jet print head is formed of a silicon substrate that includes integrated circuits formed therein for controlling operation of the print head. The silicon substrate has a series of ink channels formed therein along the length of the substrate. An insulating layer or layers overlying the silicon substrate has a series of nozzle openings or bores formed therein along the length of the substrate and each nozzle bore communicates with a respective ink channel. A primary heater element is associated with each nozzle bore for asymmetrically heating the ink in the nozzle bore. A secondary heater element is provided upstream of the primary heater element and formed in the insulating layer to preheat ink just prior to entry of the ink into the nozzle bores.
摘要翻译： 喷墨打印头由硅基板形成，该硅基板包括形成在其中的集成电路，用于控制打印头的操作。 硅衬底沿着衬底的长度形成有一系列油墨通道。 覆盖硅衬底的绝缘层或层沿着衬底的长度形成有一系列喷嘴孔或孔，每个喷嘴孔与相应的油墨通道连通。 主加热器元件与每个喷嘴孔相关联，用于不对称地加热喷嘴孔中的墨。 第二加热器元件设置在主加热器元件的上游，并形成在绝缘层中，以在墨水进入喷嘴孔之前预热墨水。
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公开(公告)号：US06203145B1
公开(公告)日：2001-03-20
申请号：US09466346
申请日：1999-12-17
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。
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