公开(公告)号：WO1994026522A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005064

申请日：1994-05-03

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  WALLACE, David, B. ,  STORTZ, James, L.

IPC: B41J02/045

CPC classification number: B41J2/14209 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2002/14379 ,  B41J2002/14491

Abstract: An ink jet printhead (10) and an associated method for operatively driving the ink jet printhead (10) to cause the ejection of a volume modulatable droplet from an ink-carrying channel (32) thereof partially defined by a piezoelectric sidewall actuator (34). The voltage (53) applied across the sidewall actuator (34) is raised from a rest voltage (54) to a first voltage to deflect the sidewall actuator (34) from a rest position to a first position and maintained at the first voltage for a first period of time. The voltage applied across the sidewall actuator (34) is then dropped to a second voltage, lower than the rest voltage, to deflect the sidewall actuator from the first position, past the rest position, to a second position and maintained at the second voltage for a second period of time. The voltage applied across the sidewall actuator (34) is then returned to the rest voltage (54) to deflect the sidewall actuator (34) back to the rest position. The first and second time periods are selected, relative to each other, to select a droplet volume for ink ejected from the ink-carying channel. The voltage applied across the sidewall actuator is then returned to the rest voltage, thereby causing the ejection of a droplet of ink having the selected droplet volume.

Abstract translation: 一种喷墨打印头（10）和用于可操作地驱动喷墨打印头（10）的相关方法，以使得可由压电侧壁致动器（34）部分地限定的墨水输送通道（32）喷射体积可调节液滴， 。 施加在侧壁致动器（34）上的电压（53）从静止电压（54）升高到第一电压，以将侧壁致动器（34）从静止位置偏转到第一位置并保持在第一电压 第一段时间。 然后，施加在侧壁致动器（34）上的电压降至低于静止电压的第二电压，以将侧壁致动器从第一位置偏转到静止位置到第二位置并保持在第二电压 第二段时间。 施加在侧壁致动器（34）上的电压然后返回到静止电压（54），以使侧壁致动器（34）偏转回到静止位置。 相对于彼此来选择第一和第二时间周期来选择从墨水通道喷射的墨的液滴体积。 然后施加在侧壁致动器上的电压返回到静止电压，从而引起具有所选择的液滴体积的墨滴。

公开(公告)号：WO1994027827A1

公开(公告)日：1994-12-08

申请号：PCT/US1994005455

申请日：1994-05-13

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  FUSTING, Daniel, R. ,  PIES, John, R. ,  WALLACE, David, B. ,  HAYES, Donald, J.

IPC: B41J02/21

CPC classification number: B41J2/1632 ,  B41J2/14209 ,  B41J2/15 ,  B41J2/155 ,  B41J2/1609 ,  B41J2/1618 ,  B41J2/1623 ,  B41J2/2103 ,  B41J2002/14379

Abstract: An integrated multi-color drop-on-demand type ink jet printhead (12). The printhead includes a main body portion (14) and a plurality of generally parallel, longitudinally extending ink-carrying channels (36) arranged into at least two channel arrays (35a-35d). A manifold (21a-21d) corresponding to each of the at least two channel arrays and in communication with each of the ink-carrying channels (36) of the corresponding array is formed in the main body portion (14). Ink is supplied to each of the at least two channel arrays from a corresponding ink source (18a-18d), each of which is filled with a different color of ink.

Abstract translation: 一种集成的多色按需喷墨打印头（12）。 打印头包括主体部分（14）和布置在至少两个通道阵列（35a-35d）中的多个大致平行的，纵向延伸的油墨承载通道（36）。 对应于至少两个通道阵列中的每一个并且与相应阵列的每个墨水输送通道（36）连通的歧管（21a-21d）形成在主体部分（14）中。 油墨从相应的油墨源（18a-18d）供应到至少两个通道阵列中的每一个，每个油墨源都填充有不同颜色的油墨。

公开(公告)号：WO1994027824A1

公开(公告)日：1994-12-08

申请号：PCT/US1994005509

申请日：1994-05-13

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  HAYES, Donald, J. ,  PIES, John, R. ,  WALLACE, David, B.

IPC: B41J02/045

CPC classification number: B41J2/1632 ,  B41J2/14209 ,  B41J2/155 ,  B41J2/1609 ,  B41J2/1618 ,  B41J2/1623

Abstract: The operation of U or UU type drop-on-demand ink jet printheads are enhanced by selectively incorporating therein volume modifying tapers in the ink carrying channels, means for electrically isolating portions of the actuators thereof, and/or forming a variable layer of conductive material between the upper and lower sidewall portions therefor.

Abstract translation: U或UU型按需喷墨打印头的操作通过选择性地将其中的油墨传送通道中的体积改变锥度，用于电隔离其致动器的部分的装置和/或形成导电材料的可变层来增强 在其上侧壁部分和下侧壁部分之间。

公开(公告)号：WO1994005503A1

公开(公告)日：1994-03-17

申请号：PCT/US1993007921

申请日：1993-08-19

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  EVERETT, Mickey, H. ,  WALLACE, David, B. ,  HAYES, Donald, J.

IPC: B41J02/14

CPC classification number: B41J2/14209 ,  B41J2/155 ,  B41J2002/14379

Abstract: A length mode drop on demand type ink jet print head includes a lower body portion formed of an active piezoelectric material and an upper body formed from an inactive material. The lower body portion, which includes a plurality of longitudinally extending projections, is poled in a first direction generally orthogonal to both its longitudinal and vertical axes. The upper body portion also includes a plurality of longitudinally extending projections. The lower and upper body portions are mated such that the lower and upper body projections are spaced interdigitally with each other. By mating the lower and upper body portions in this manner, a plurality of ink-carrying channels are formed. The ink jet print head further includes a controller for selectively applying an electric field across each of the lower body projections in the poling direction. When an electric field is applied across one of the lower body projections in this fashion, the projection imparts a pressure pulse to the ink-carrying channel associated therewith. The active lower body portion may be replaced with an inactive lower body portion, an active intermediate body portion which includes a plurality of longitudinally extending projections, each having a strip of conductive material along the top surface thereof, and a layer of conductive material mounting the lower and intermediate body portions together. Here, the intermediate body portion would be poled in its vertical axis and the electric field would be applied between the conductive strip and layer.

Abstract translation: 长度模式下降点阵型喷墨打印头包括由有源压电材料形成的下主体部分和由非活性材料形成的上体。 包括多个纵向延伸的突起的下主体部分沿与其纵向轴线和垂直轴线大致正交的第一方向极化。 上身部分还包括多个纵向延伸的突起。 下身和上身部分配合使得下身和上身突出物彼此间指间隔开。 通过以这种方式配合下部和上部本体部分，形成多个墨水输送通道。 喷墨打印头还包括控制器，用于在极化方向上选择性地在每个下部主体突起上施加电场。 当以这种方式将电场施加在下部主体突起之一上时，突起将压力脉冲施加到与其相关联的载墨通道。 活动的下身部分可以用不活动的下身部分代替，活动的中间体部分包括多个纵向延伸的突出物，每个突起部分沿着其顶表面具有导电材料条，以及一个导电材料层， 下部和中间体部分在一起。 这里，中间体部分将在其垂直轴上极化，并且电场将被施加在导电带和层之间。

公开(公告)号：WO1993019940A1

公开(公告)日：1993-10-14

申请号：PCT/US1993002608

申请日：1993-03-22

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  PIES, John, R. ,  WALLACE, David, B. ,  HAYES, Donald, J.

IPC: B41J02/16

CPC classification number: B41J2/1623 ,  B41J2/14209 ,  B41J2/155 ,  B41J2/1609 ,  B41J2/1618 ,  B41J2/1632

Abstract: An ink jet printhead is comprised of a lower body part (52) having a base section and a plurality of generally parallel spaced projections extending upwardly therefrom and an upper body part (54) having a top section and a corresponding plurality of generally parallel spaced projections extending downwardly therefrom. The top sides of the lower body projections (59) are conductively mounted to the bottom sides of the upper body projections (61) to form sidewalls which define a plurality of ink-carrying channels (70). Strips of a conductive adhesive (57) mount the lower and upper body projections together and a controller (80) is electrically connected to the strips to selectively impart either a positive, zero, or negative voltage to each strip. The lower body part (52) is formed using a piezoelectric material poled in a first direction (P1) generally perpendicular to the channels and the upper body part (54) is formed using a piezoelectric material also poled in the first direction (P2). By applying a positive voltage to a first strip of conductive adhesive and a negative voltage to an adjacent strip of conductive adhesive, first and second electric fields oppositely orientated to each other and normal to the direction of poling are produced in the lower and upper body projections which form first and second sidewalls for the channel, thereby causing the first and second sidewalls to deform in first and second channel expanding directions, respectively.

Abstract translation: 喷墨打印头包括下主体部分（52），下主体部分（52）具有基部和从其向上延伸的多个大致平行间隔开的​​突出部分，以及上主体部分（54），其具有顶部部分和对应的多个大致平行间隔开的​​突出部 从其向下延伸。 下体突起（59）的顶面被导电地安装到上体突起（61）的底侧，以形成限定多个墨水通道（70）的侧壁。 导电粘合剂（57）的条带将下部和上部主体突出物安装在一起，并且控制器（80）电连接到条带以选择性地向每个条带施加正的，零的或负的电压。 下主体部分52使用在大致垂直于通道的第一方向（P1）上极化的压电材料形成，并且使用也沿第一方向（P2）极化的压电材料形成上主体部分（54）。 通过向导电粘合剂的第一条带施加正电压并将负电压施加到相邻的导电粘合带上，在下部和上部主体突起中产生彼此相反定向并垂直于极化方向的第一和第二电场 其形成通道的第一和第二侧壁，从而分别使第一和第二侧壁在第一和第二通道扩张方向上变形。

公开(公告)号：WO1994026524A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005132

申请日：1994-05-04

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  STORTZ, James, L. ,  WALLACE, David, B.

IPC: B41J02/045

CPC classification number: B41J2/14209 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588

Abstract: A digital driver (12, 54) for an ink jet printhead (10) and an associated method for selectively applying voltage to a piezo-electric sidewall actuator (34) of the ink jet printhead. The digital driver (54) includes positive (V+) and negative voltage sources (V-), a first switching element (56) having a first control input (60), a first voltage supply input (62) connected to the positive voltage source (V+), and a first ouput (64), and a second switching element (58) having a second control input (61), a second voltage supply input (63) connected to the negative voltage source (V-), and a second output (65) connected to the first output (64) to provide a single output (28) connected to the piezoelectric sidewall actuator (34). By asserting the first control input (66) for a first time period, the first switching element (56) generates a positive voltage pulse (70) at the single output to displace the sidewall actuator (34) from a rest position to a first position. Next, by simultaneously deasserting the first control input (66) and asserting the second control input (68), the second switching element (58) generates a negative voltage pulse (74) at the single output to displace the sidewall actuator (34) from the first position, past the rest position, to a second position. Next, by deasserting the second control input (68), the sidewall actuator (34) passively returns to the rest position. The return to the rest position may be assisted by discharging the printhead (10) after deassertion of the second control input (68), by re-applying the first voltage for a second, shorter, time period to actively drive the sidewall actuator (34) towards the rest position, or by both.

Abstract translation: 一种用于喷墨打印头（10）的数字驱动器（12,54）和用于选择性地向喷墨打印头的压电侧壁致动器（34）施加电压的相关方法。 数字驱动器（54）包括正（V +）和负电压源（V-），具有第一控制输入（60）的第一开关元件（56），连接到正电压源的第一电压供应输入 （V +）和第一输出（64）以及具有第二控制输入（61）的第二开关元件（58），连接到负电压源（V-）的第二电压供给输入端（63） 第二输出（65）连接到第一输出端（64），以提供连接到压电侧壁致动器（34）的单个输出（28）。 通过在第一时间段内确定第一控制输入（66），第一开关元件（56）在单个输出处产生正电压脉冲（70），以使侧壁致动器（34）从静止位置移动到第一位置 。 接下来，通过同时解除第一控制输入（66）和断言第二控制输入（68），第二开关元件（58）在单个输出处产生负电压脉冲（74），以使侧壁致动器（34）从 第一个位置，通过休息位置，到第二个位置。 接下来，通过解除第二控制输入（68），侧壁致动器（34）被动地返回到静止位置。 可以通过在第二个较短的时间周期之后重新施加第一电压来主动驱动侧壁致动器（34）来辅助通过在第二控制输入端（68）解除驱动之后将打印头（10） ）朝向休息位置，或由两者。

公开(公告)号：WO1994026523A1

公开(公告)日：1994-11-24

申请号：PCT/US1994005066

申请日：1994-05-03

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  STORTZ, James, L. ,  WALLACE, David, B.

IPC: B41J02/045

CPC classification number: B41J2/04581 ,  B41J2/04541 ,  B41J2/14209 ,  B41J2202/10

Abstract: A switched digital drive system is used to actuate an ink jet printhead (10) having a spaced, parallel series of internal ink receiving channels (32) opening outwardly at front ends thereof through ink discharge orifices (24) formed in the printhead body (14). The channels are laterally bounded by a spaced series of piezoelectrically deflectable internal sidewall sections of the printhead body interdigitated with the channels. The drive system (12) includes a series of electrical actuation leads (28) each connected to a different one of the sidewall sections (34a), and dual transistor switch structures connected in the leads with each switch, in turn, connected to positive and negative DC voltage sources. To actuate a selected channel, the switches associated with its opposite bounding sidewall sections are operated in a manner sequentially (1) deflecting the sidewall sections outwardly away from initially undeflected positions thereof by imposing constant, opposite polarity voltages thereon, (2) reversing the polarities of the constant voltages to deflect the sidewall sections into the channel, and then (3) imposing a series of voltage pulses of sequentially opposite polarities on each of the inwardly deflected sidewall sections to controllably return them to their initial undeflected positions.

Abstract translation: 切换数字驱动系统用于致动喷墨打印头（10），喷墨打印头（10）具有间隔开的平行的一系列内部油墨接收通道（32），其通过形成在打印头主体（14）中的喷墨孔（24）的前端向外打开 ）。 这些通道由与通道相互指向的打印头主体的间隔开的一系列可压电偏转的内部侧壁部分横向界定。 驱动系统（12）包括一系列电致动引线（28），每个连接到不同的一个侧壁部分（34a），并且每个开关连接到引线中的双晶体管开关结构又连接到正极和 负直流电压源。 为了致动所选择的通道，与其相对的边界侧壁部分相关联的开关以顺序地操作（1）通过在其上施加恒定的相反极性电压使侧壁部分偏离其初始未偏转位置，（2）使极性反转 的恒定电压以将侧壁部分偏转到通道中，然后（3）在每个向内偏转的侧壁部分上施加一系列具有相反极性的电压脉冲，以可控制地将它们返回到它们的初始未偏转位置。

公开(公告)号：WO1994025279A1

公开(公告)日：1994-11-10

申请号：PCT/US1994005103

申请日：1994-04-28

Applicant: COMPAQ COMPUTER CORPORATION

Inventor： COMPAQ COMPUTER CORPORATION ,  HAYES, Donald, J. ,  WALLACE, David, B.

IPC: B41J02/16

CPC classification number: B41J2/04581 ,  B23K26/389 ,  B23K2103/42 ,  B23K2103/50 ,  B41J2/0458 ,  B41J2/04593 ,  B41J2/14209 ,  B41J2/1433 ,  B41J2/2128

Abstract: A spot size modulatable, drop-on-demand type ink jet printhead (32) and associated methods for ejecting volume modulatable droplets of ink therefrom. The ink jet printhead (32) includes a main body portion (34) having first and second ink carrying channels (50a, 50b, 50c, 50d) longitudinally extending therethrough and a cover plate (42) fixedly mounted thereto. Formed in the cover plate (42) is a tapered orifice (48a, 48b) which extends from first and second openings (50, 52) along a back side surface to a third opening (54) along a front side surface thereof. The cover plate (42) is mounted to the main body portion (34) such that the first opening (50) is in communication with the first ink carrying channel (50a, 50c) and the second opening (52) is in communication with the second ink carrying channel (50b, 50d). The ink jet printhead (32) further includes first and second actuators (50a, 50b, 50c, 50d) coupled with the first and second ink carrying channels respectively. Volume modulatable droplets of ink may be ejected from the ink jet printhead (32) by simultaneously applying a voltage pulse having a selected magnitude to the first ink carrying channel and a voltage pulse having a magnitude ranging between zero and the selected magnitude to the second ink carrying channel. Alternately, volume modulatable droplets of ink may be ejected from the ink jet printhead by sequentially applying a voltage pulse having a selected time duration to the first ink carrying channel and a voltage pulse having a time duration ranging between zero and the selected time duration to the second ink carrying channel.

Abstract translation: 点尺寸可调节按需喷墨打印头（32）和用于从其中排出油墨的体积可调节液滴的相关方法。 喷墨打印头（32）包括：主体部分（34），其具有纵向延伸穿过的第一和第二墨水容纳通道（50a，50b，50c，50d）和固定地安装在其上的盖板（42）。 在盖板（42）上形成有从第一和第二开口（50,52）沿其前侧表面沿着背侧表面延伸到第三开口（54）的锥形孔口（48a，48b）。 盖板（42）安装在主体部分（34）上，使得第一开口（50）与第一墨水输送通道（50a，50c）连通，第二开口（52）与 第二墨水输送通道（50b，50d）。 喷墨打印头（32）还包括分别与第一和第二墨水输送通道耦合的第一和第二致动器（50a，50b，50c，50d）。 可以通过将具有选定幅度的电压脉冲同时施加到第一墨水承载通道并且具有范围在零和所选大小之间的幅度的电压脉冲到第二墨水从喷墨打印头（32）喷射墨水的体积可调节液滴 携带通道。 或者，可以通过将具有选定持续时间的电压脉冲顺序地施加到第一墨水携带通道和具有从0到所选择的持续时间之间的持续时间范围的电压脉冲，从墨喷射打印头喷射体积可调节的墨水滴 第二墨水通道。

公开(公告)号：EP0633841A1

公开(公告)日：1995-01-18

申请号：EP93908464.0

申请日：1993-03-22

Applicant: Compaq Computer Corporation

Inventor： PIES, John, R. ,  WALLACE, David, B. ,  HAYES, Donald, J.

IPC: B41J2

CPC classification number: B41J2/1623 ,  B41J2/14209 ,  B41J2/155 ,  B41J2/1609 ,  B41J2/1618 ,  B41J2/1632

Abstract: An ink jet printhead is comprised of a lower body part (52) having a base section and a plurality of generally parallel spaced projections extending upwardly therefrom and an upper body part (54) having a top section and a corresponding plurality of generally parallel spaced projections extending downwardly therefrom. The top sides of the lower body projections (59) are conductively mounted to the bottom sides of the upper body projections (61) to form sidewalls which define a plurality of ink-carrying channels (70). Strips of a conductive adhesive (57) mount the lower and upper body projections together and a controller (80) is electrically connected to the strips to selectively impart either a positive, zero, or negative voltage to each strip. The lower body part (52) is formed using a piezoelectric material poled in a first direction (P1) generally perpendicular to the channels and the upper body part (54) is formed using a piezoelectric material also poled in the first direction (P2). By applying a positive voltage to a first strip of conductive adhesive and a negative voltage to an adjacent strip of conductive adhesive, first and second electric fields oppositely orientated to each other and normal to the direction of poling are produced in the lower and upper body projections which form first and second sidewalls for the channel, thereby causing the first and second sidewalls to deform in first and second channel expanding directions, respectively.

公开(公告)号：EP0699134B1

公开(公告)日：1998-11-11

申请号：EP94917321.5

申请日：1994-05-03

Applicant: Compaq Computer Corporation

Inventor： WALLACE, David, B. ,  STORTZ, James, L.

IPC: B41J2/045

CPC classification number: B41J2/14209 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2002/14379 ,  B41J2002/14491

Abstract: An ink jet printhead (10) and an associated method for operatively driving the ink jet printhead (10) to cause the ejection of a volume modulatable droplet from an ink-carrying channel (32) thereof partially defined by a piezoelectric sidewall actuator (34). The voltage (53) applied across the sidewall actuator (34) is raised from a rest voltage (54) to a first voltage to deflect the sidewall actuator (34) from a rest position to a first position and maintained at the first voltage for a first period of time. The voltage applied across the sidewall actuator (34) is then dropped to a second voltage, lower than the rest voltage, to deflect the sidewall actuator from the first position, past the rest position, to a second position and maintained at the second voltage for a second period of time. The voltage applied across the sidewall actuator (34) is then returned to the rest voltage (54) to deflect the sidewall actuator (34) back to the rest position. The first and second time periods are selected, relative to each other, to select a droplet volume for ink ejected from the ink-carying channel. The voltage applied across the sidewall actuator is then returned to the rest voltage, thereby causing the ejection of a droplet of ink having the selected droplet volume.