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    • 1. 发明申请
    • An Inkjet Printer And A Method Of Manufacturing An Inkjet Printer
    • 喷墨打印机和制造喷墨打印机的方法
    • US20060256164A1
    • 2006-11-16
    • US11382915
    • 2006-05-11
    • Atsushi HirotaChitoshi UekiShin Ishikura
    • Atsushi HirotaChitoshi UekiShin Ishikura
    • B41J2/045
    • B41J2/04581B41J2/04588B41J2/14209B41J2/1609B41J2/1623B41J2/1626B41J2002/14217B41J2002/14225B41J2002/14306B41J2002/14459B41J2202/20
    • An inkjet printer whose ink discharge characteristic will rarely change even when used for a long period of time is developed. The inkjet printer has a pressure chamber and a piezoelectric actuator and a controller. The piezoelectric actuator has a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode, and they are laminated together in this order. The piezoelectric actuator forms a portion of the wall defining the pressure chanter. The controller applies ink discharge signal between the first and second electrode, ink discharge signal comprises advanced voltage change from a predetermined voltage to the lower voltage and subsequent voltage change from the lower voltage to the predetermined voltage. Ink can be effectively discharged by applying the ink discharge signal, but the ink discharge signal could change piezoelectric characteristic in the second piezoelectric film due to the deformation of the first piezoelectric film. The additional signal applying the second piezoelectric film via the second and the third electrode can reduce the changes of the piezoelectric characteristic. As a result, changes of ink discharge characteristic can be prevented.
    • 即使长时间使用,其喷墨特性也很少变化的喷墨打印机。 喷墨打印机具有压力室和压电致动器和控制器。 压电致动器具有第一电极,第一压电膜,第二电极,第二压电膜和第三电极,并且它们依次层压在一起。 压电致动器形成限定压力传递器的壁的一部分。 控制器在第一和第二电极之间施加墨水放电信号,墨水排出信号包括从预定电压到较低电压的先进电压变化以及从较低电压到预定电压的随后电压变化。 通过施加墨水排出信号可以有效地排出墨水,但是由于第一压电膜的变形,喷墨信号可能会改变第二压电膜中的压电特性。 通过第二和第三电极施加第二压电膜的附加信号可以减小压电特性的变化。 结果,可以防止喷墨特性的变化。
    • 2. 发明授权
    • Inkjet printer and a method of manufacturing an inkjet printer
    • 喷墨打印机和制造喷墨打印机的方法
    • US07712877B2
    • 2010-05-11
    • US11382915
    • 2006-05-11
    • Atsushi HirotaChitoshi UekiShin Ishikura
    • Atsushi HirotaChitoshi UekiShin Ishikura
    • B41J2/045B41J29/38
    • B41J2/04581B41J2/04588B41J2/14209B41J2/1609B41J2/1623B41J2/1626B41J2002/14217B41J2002/14225B41J2002/14306B41J2002/14459B41J2202/20
    • An inkjet printer whose ink discharge characteristic will rarely change even when used for a long period of time is developed. The inkjet printer has a pressure chamber and a piezoelectric actuator and a controller. The piezoelectric actuator has a first electrode, a first piezoelectric film, a second electrode, a second piezoelectric film, and a third electrode, and they are laminated together in this order. The piezoelectric actuator forms a portion of the wall defining the pressure chanter. The controller applies ink discharge signal between the first and second electrode, ink discharge signal comprises advanced voltage change from a predetermined voltage to the lower voltage and subsequent voltage change from the lower voltage to the predetermined voltage. Ink can be effectively discharged by applying the ink discharge signal, but the ink discharge signal could change piezoelectric characteristic in the second piezoelectric film due to the deformation of the first piezoelectric film. The additional signal applying the second piezoelectric film via the second and the third electrode can reduce the changes of the piezoelectric characteristic. As a result, changes of ink discharge characteristic can be prevented.
    • 即使长时间使用,其喷墨特性也很少变化的喷墨打印机。 喷墨打印机具有压力室和压电致动器和控制器。 压电致动器具有第一电极,第一压电膜,第二电极,第二压电膜和第三电极,并且它们依次层压在一起。 压电致动器形成限定压力传递器的壁的一部分。 控制器在第一和第二电极之间施加墨水放电信号,墨水排出信号包括从预定电压到较低电压的先进电压变化以及从较低电压到预定电压的随后电压变化。 通过施加墨水排出信号可以有效地排出墨水,但是由于第一压电膜的变形,喷墨信号可能会改变第二压电膜中的压电特性。 通过第二和第三电极施加第二压电膜的附加信号可以减小压电特性的变化。 结果,可以防止喷墨特性的变化。
    • 3. 发明授权
    • Inkjet printer
    • 喷墨打印机
    • US07780272B2
    • 2010-08-24
    • US11382862
    • 2006-05-11
    • Atsushi HirotaChitoshi Ueki
    • Atsushi HirotaChitoshi Ueki
    • B41J2/045B41J29/38
    • B41J2/04588B41J2/04581B41J2002/14217B41J2002/14225B41J2002/14306
    • The lnkjet printer has a pressure chamber, a plezoelectric actuator, and a controller. The plezoelectrlc actuator has a piezoelectric film, a first electrode, a second electrode, and a third electrode. The first electrode, positioned in the region facing the pressure chamber, and the third electrode, positioned adjacent to the first electrode, are attached on one surface of the piezoeiectric film. The second electrode is attached on an opposite surface of the piezoelectric film and overlaps the first and third electrodes. To discharge ink, the controller applies an ink discharge signal between the first and second electrodes comprising an advanced voltage change from a predetermined voltage to the lower voltage and a subsequent voltage change from the lower voltage to the predetermined voltage. The controller also applies a peripheral signal between the second and thIrd electrodes to prevent changes in characteristics of the piezoelectrlc actuator that may affect ink discharge.
    • lnkjet打印机有一个压力室,一个plezoelectric执行器和一个控制器。 所述plezoelectrlc致动器具有压电膜,第一电极,第二电极和第三电极。 定位在面向压力室的区域中的第一电极和邻近第一电极定位的第三电极附接在压电膜的一个表面上。 第二电极附着在压电膜的相对表面上,并与第一和第三电极重叠。 为了排出墨,控制器在第一和第二电极之间施加包括从预定电压到较低电压的高级电压变化以及从较低电压到预定电压的随后电压变化的第一和第二电极之间的喷墨信号。 控制器还在第二和第th电极之间施加外围信号,以防止可能影响墨水排出的压电式致动器的特性变化。
    • 4. 发明授权
    • Inkjet head
    • 喷墨头
    • US07014300B2
    • 2006-03-21
    • US10668321
    • 2003-09-24
    • Atsushi HirotaChitoshi Ueki
    • Atsushi HirotaChitoshi Ueki
    • B41J2/045
    • B41J2/14209B41J2002/14217B41J2002/14225B41J2002/14306B41J2202/20
    • An inkjet head includes a cavity unit and a piezoelectric unit stacked on the cavity unit. The cavity unit has a plurality of ink pressure chambers and a plurality of nozzles being in fluid communication with respective ones of the ink pressure chambers. The piezoelectric unit includes a laminate of four piezoelectric layers and two common electrodes. The piezoelectric unit is provided with a plurality of driving electrodes formed on a top face thereof at positions corresponding to respective ones of the pressure chambers. One of the common electrodes is provided between the upper most piezoelectric layer and the piezoelectric layer immediately therebelow so as to extend substantially over the whole area defined between those two piezoelectric layers. The other common electrode is located between the lower most piezoelectric layer and the piezoelectric layer immediately thereabove so as to extend substantially over the whole area defined therebetween.
    • 喷墨头包括空腔单元和堆叠在空腔单元上的压电单元。 空腔单元具有多个墨压力室,并且多个喷嘴与相应的墨压力室流体连通。 压电单元包括四个压电层和两个公共电极的叠层。 压电单元设置有多个驱动电极,该多个驱动电极在与其相应的压力室对应的位置的上表面上形成。 公共电极之一设置在最高压电层和紧邻其之间的压电层之间,以便基本上延伸在两个压电层之间限定的整个区域上。 另一个公共电极位于最低压电层和紧邻其上的压电层之间,以便基本上在其间限定的整个区域上延伸。
    • 5. 发明申请
    • An Inkjet Printer
    • 喷墨打印机
    • US20060256163A1
    • 2006-11-16
    • US11382862
    • 2006-05-11
    • Atsushi HirotaChitoshi Ueki
    • Atsushi HirotaChitoshi Ueki
    • B41J2/045
    • B41J2/04588B41J2/04581B41J2002/14217B41J2002/14225B41J2002/14306
    • An inkjet printer whose ink discharge characteristic will rarely change even when used for a long period of time is developed. The inkjet printer has a pressure chamber and a piezoelectric actuator and a controller. The piezoelectric actuator has a piezoelectric film, a first electrode, a second electrode and a third electrode. The piezoelectric actuator forms a portion of the wall defining the pressure chanter. The first electrode is attached on the surface of the piezoelectric film and is positioned in the region facing the pressure chamber. The third electrode is attached on the surface of the piezoelectric film and is positioned adjacent to the first electrode. The third electrode is attached on the other surface of the piezoelectric film and is overlapping with the first and third electrode. The controller applies ink discharge signal between the first and second electrode, ink discharge signal comprises advanced voltage change from a predetermined voltage to the lower voltage and subsequent voltage change from the lower voltage to the predetermined voltage. Ink can be discharged by applying the ink discharge signal, but the ink discharge signal may change piezoelectric characteristic because, within the piezoelectric film, a deformed portion which is sandwiched by the first and second electrode and a non-deformed portion which is not sandwiched by the first and second electrode appear. The controller also applies peripheral signal between the second and third electrode. The characteristic change of the piezoelectric actuator that may be caused by application of the ink discharge signal can be prevented by applying the peripheral signal to the non deformed portion. The change of ink discharge characteristic that is caused by the characteristic chance of the piezoelectric actuator can be prevented.
    • 即使长时间使用,其喷墨特性也很少变化的喷墨打印机。 喷墨打印机具有压力室和压电致动器和控制器。 压电致动器具有压电膜,第一电极,第二电极和第三电极。 压电致动器形成限定压力传递器的壁的一部分。 第一电极附着在压电膜的表面上并且位于面向压力室的区域中。 第三电极附着在压电薄膜的表面上并与第一电极相邻。 第三电极附着在压电膜的另一个表面上,并与第一和第三电极重叠。 控制器在第一和第二电极之间施加墨水放电信号,墨水排出信号包括从预定电压到较低电压的先进电压变化以及从较低电压到预定电压的随后电压变化。 可以通过施加墨水排出信号来排出墨水,但是由于在压电膜内部由第一和第二电极夹持的变形部分和不夹在第一和第二电极之间的非变形部分 出现第一和第二电极。 控制器还在第二和第三电极之间施加周边信号。 可以通过将外围信号施加到非变形部分来防止由施加喷墨信号引起的压电致动器的特征变化。 可以防止由压电致动器的特征机会引起的喷墨特性的变化。
    • 7. 发明授权
    • Method for manufacturing an inkjet head
    • 喷墨头的制造方法
    • US07353604B2
    • 2008-04-08
    • US11055771
    • 2005-02-11
    • Atsushi HirotaShin Ishikura
    • Atsushi HirotaShin Ishikura
    • B21D53/76B41J2/05
    • B41J2/1623B41J2/1609B41J2002/14225B41J2002/14258B41J2002/14306B41J2002/14459B41J2002/14491B41J2202/20Y10T29/42Y10T29/49126Y10T29/49128Y10T29/4913Y10T29/49401
    • A method for manufacturing an inkjet head includes producing a flow path unit, producing an actuator unit, bonding the actuator unit with the flow path unit to produce a bonded structure; measuring a frequency characteristic of impedance of the piezoelectric structure of the bonded structure in each of regions facing at least one of the pressure chambers, and determining whether or not the bonded structure is a good product on a basis of at least one of a distribution of (Fa−Fr) in the plural regions where Fa represents antiresonance frequency of each region at which impedance of each region are maximal and Fr represents resonance frequency of each region at which impedance of each region is minimal, a distribution of Fr in the plural regions, and a distribution of Zr in the plural regions, where Zr represents impedance of each region at the resonance frequency of each region.
    • 一种制造喷墨头的方法,包括制造流路单元,制造致动器单元,将致动器单元与流路单元接合以产生接合结构; 测量在面对至少一个所述压力室的每个区域中所述结合结构的压电结构的阻抗的频率特性,并且基于所述粘合结构的分布中的至少一个来确定所述粘结结构是否是良好的产品 (Fa-Fr),其中Fa表示每个区域的阻抗最大的每个区域的反共振频率,Fr表示每个区域的阻抗最小的每个区域的谐振频率,在多个区域中的Fr的分布 以及Zr在多个区域中的分布,其中Zr表示每个区域的谐振频率处的每个区域的阻抗。
    • 10. 发明授权
    • Inkjet head
    • 喷墨头
    • US07798614B2
    • 2010-09-21
    • US11330249
    • 2006-01-12
    • Tadanobu ChikamotoAtsushi Hirota
    • Tadanobu ChikamotoAtsushi Hirota
    • B41J2/045
    • F04B43/046B41J2/14209B41J2002/14217B41J2002/14225B41J2002/14306B41J2002/14362B41J2002/14419B41J2002/14459B41J2002/14491B41J2202/20
    • An inkjet head includes a flow-path unit, a reservoir unit and an actuator unit. The flow-path unit includes a common ink chamber and plural individual ink flow paths. The actuator unit includes plural first electrodes and a second electrode. The first electrodes are arranged to correspond to pressure chambers, respectively. The first electrodes are fed selectively with respective drive voltages for varying a volume of the pressure chambers. One of the flow-path unit and the reservoir unit includes a first metal portion, and the other includes a second metal portion. The metal portion of the flow-path unit and the second electrode are electrically connected with each other. The first metal portion and the second metal portion are jointed to each other through an insulating material layer. An electric connection portion, which is in direct contact with the second metal portion, is integrated with the first metal portion.
    • 喷墨头包括流路单元,储存器单元和致动器单元。 流路单元包括公共墨室和多个单独墨流路。 致动器单元包括多个第一电极和第二电极。 第一电极分别对应于压力室。 第一电极被选择性地馈入各自的驱动电压以改变压力室的体积。 流路单元和储存器单元之一包括第一金属部分,另一个包括第二金属部分。 流路单元的金属部分和第二电极彼此电连接。 第一金属部分和第二金属部分通过绝缘材料层彼此接合。 与第二金属部分直接接触的电连接部分与第一金属部分一体化。