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    Liquid jet apparatus having a modulation period modification circuit
    1.
    发明授权
    Liquid jet apparatus having a modulation period modification circuit 有权
    具有调制周期修改电路的液体喷射装置

    公开(公告)号：US08376486B2

    公开(公告)日：2013-02-19

    申请号：US12340895

    申请日：2008-12-22

    申请人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    发明人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    IPC分类号： B41J29/38 ,  H03F3/38

    CPC分类号： B41J2/04501 ,  B41J2/04508 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596 ,  B41J2/07 ,  H01L41/042 ,  H03F3/2175

    摘要： A liquid jet apparatus according to the present invention includes a drive waveform generator adapted to generate a drive waveform signal, a modulator adapted to execute pulse modulation on the drive waveform signal, a digital power amplifier adapted to power-amplify the modulated signal, on which the pulse modulation is executed by the modulator, with a pair of switching elements push-pull coupled with each other, a low pass filter adapted to smooth the amplified digital signal obtained by the power-amplification of the digital power amplifier, and a modulation period modification circuit adapted to modify a modulation period of the pulse modulation of the modulator based on data of the drive waveform signal.

    摘要翻译： 根据本发明的液体喷射装置包括适于产生驱动波形信号的驱动波形发生器，适于对驱动波形信号执行脉冲调制的调制器，适于对已调制信号进行功率放大的数字功率放大器， 脉冲调制由调制器执行，一对开关元件彼此相互推挽，一个适合于平滑由数字功率放大器的功率放大而获得的放大数字信号的低通滤波器，以及调制周期 修改电路，其适于基于所述驱动波形信号的数据修改所述调制器的脉冲调制的调制周期。

    Liquid jet apparatus
    2.
    发明授权
    Liquid jet apparatus 有权
    液体喷射装置

    公开(公告)号：US08308254B2

    公开(公告)日：2012-11-13

    申请号：US12389525

    申请日：2009-02-20

    申请人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    发明人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    IPC分类号： B41J29/38

    CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596

    摘要： A liquid jet apparatus according to the invention is a liquid jet apparatus adapted to emit a jet of a liquid by driving an actuator of a liquid jet head with a drive signal including a digital power amplifier and a low pass filter provided to the liquid jet head so as to correspond to the actuator, and adapted to power-amplify and smooth a modified signal from a control circuit to form the drive signal, wherein the low pass filter is coupled directly with the actuator, and the digital power amplifier is provided with a pair of switching elements and a gate drive circuit, and ON-OFF controls the gate drive circuit based on print data, thereby performing one of output and halt of the drive signal.

    摘要翻译： 根据本发明的液体喷射装置是一种液体喷射装置，其适于通过驱动液体喷射头的致动器来发射液体射流，该驱动信号包括提供给液体喷射头的数字功率放大器和低通滤波器 以便对应于所述致动器，并且适于对来自控制电路的修改信号进行功率放大和平滑以形成所述驱动信号，其中所述低通滤波器直接与所述致动器耦合，并且所述数字功率放大器设置有 一对开关元件和栅极驱动电路，并且ON-OFF基于打印数据控制栅极驱动电路，从而执行驱动信号的输出和停止之一。

    LIQUID JET APPARATUS
    3.
    发明申请
    LIQUID JET APPARATUS 有权
    液体喷射装置

    公开(公告)号：US20090213152A1

    公开(公告)日：2009-08-27

    申请号：US12389525

    申请日：2009-02-20

    申请人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    发明人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    IPC分类号： B41J29/38

    CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04581 ,  B41J2/04593 ,  B41J2/04596

    摘要： A liquid jet apparatus according to the invention is a liquid jet apparatus adapted to emit a jet of a liquid by driving an actuator of a liquid jet head with a drive signal including a digital power amplifier and a low pass filter provided to the liquid jet head so as to correspond to the actuator, and adapted to power-amplify and smooth a modified signal from a control circuit to form the drive signal, wherein the low pass filter is coupled directly with the actuator, and the digital power amplifier is provided with a pair of switching elements and a gate drive circuit, and ON-OFF controls the gate drive circuit based on print data, thereby performing one of output and halt of the drive signal.

    摘要翻译： 根据本发明的液体喷射装置是一种液体喷射装置，其适于通过驱动液体喷射头的致动器来发射液体射流，该驱动信号包括提供给液体喷射头的数字功率放大器和低通滤波器 以便对应于所述致动器，并且适于对来自控制电路的修改信号进行功率放大和平滑以形成所述驱动信号，其中所述低通滤波器直接与所述致动器耦合，并且所述数字功率放大器设置有 一对开关元件和栅极驱动电路，并且ON-OFF基于打印数据控制栅极驱动电路，从而执行驱动信号的输出和停止之一。

    Driving device and driving method of capacitive load and liquid jet printing apparatus
    5.
    发明授权
    Driving device and driving method of capacitive load and liquid jet printing apparatus 有权
    电容式负载和液体喷射印刷装置的驱动装置和驱动方法

    公开(公告)号：US07746127B2

    公开(公告)日：2010-06-29

    申请号：US12325915

    申请日：2008-12-01

    申请人： Shinichi Miyazaki ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    发明人： Shinichi Miyazaki ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Hiroyuki Aizawa ,  Seiichi Taniguchi

    IPC分类号： H03K3/00

    CPC分类号： B41J2/04596 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  H03F3/217 ,  H03K7/08

    摘要： A driving device of a capacitive load includes a modulator that executes pulse modulation on a drive waveform signal. An inductor performs low-pass filtering on the modulated drive waveform signal and outputs the low-pass filtered signal as a drive signal towards a load capacitor as the capacitive load. A load selection control circuit selects a load capacitor and a dummy load capacitor to be connected to the inductor so that a sum of the capacitances of the selected load capacitor and dummy load capacitor is kept within a predetermined range. A feedback circuit executes a filtering process on the drive signal so that a frequency characteristic of a passing band of the drive signal becomes substantially flat. The resulting signal is provided to the modulator as a feedback signal. The modulator executes the pulse modulation on a difference value between the drive waveform signal and the feedback signal.

    摘要翻译： 电容性负载的驱动装置包括对驱动波形信号执行脉冲调制的调制器。 电感器对调制驱动波形信号进行低通滤波，并将低通滤波信号作为驱动信号输出到负载电容器作为电容性负载。 负载选择控制电路选择要连接到电感器的负载电容器和虚拟负载电容器，使得所选择的负载电容器和虚拟负载电容器的电容之和保持在预定范围内。 反馈电路对驱动信号执行滤波处理，使得驱动信号的通带的频率特性变得基本平坦。 所得信号作为反馈信号提供给调制器。 调制器对驱动波形信号和反馈信号之间的差值执行脉冲调制。

    Liquid ejection device and liquid ejection surgical instrument
    6.
    发明授权
    Liquid ejection device and liquid ejection surgical instrument 有权
    液体喷射装置和液体喷射手术器械

    公开(公告)号：US08733873B2

    公开(公告)日：2014-05-27

    申请号：US13555740

    申请日：2012-07-23

    申请人： Atsushi Oshima ,  Kunio Tabata ,  Shinichi Miyazaki ,  Hiroyuki Yoshino ,  Noritaka Ide

    发明人： Atsushi Oshima ,  Kunio Tabata ,  Shinichi Miyazaki ,  Hiroyuki Yoshino ,  Noritaka Ide

    IPC分类号： B41J29/38

    CPC分类号： A61B17/3203 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/0455 ,  B41J2/0457 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04593 ,  B41J29/38

    摘要： A liquid ejection device includes: a drive waveform generator generating a drive waveform signal; a modulator performing pulse modulation on a signal from the drive waveform generator to provide a modulated signal; a digital power amplifier performing power amplification on the modulated signal to provide an amplified digital signal; a Lowpass Filter smoothing the amplified digital signal to provide a drive signal of an actuator; a compensator advancing the phase of the drive signal to provide a negative feedback signal; and a subtractor providing a differential signal between the drive waveform signal and the negative feedback signal as an input signal to the modulator.

    摘要翻译： 液体喷射装置包括：产生驱动波形信号的驱动波形发生器; 对来自驱动波形发生器的信号执行脉冲调制以提供调制信号的调制器; 数字功率放大器，对调制信号进行功率放大，以提供放大的数字信号; 低通滤波器平滑放大的数字信号以提供致动器的驱动信号; 补偿器推进驱动信号的相位以提供负反馈信号; 以及在驱动波形信号和负反馈信号之间提供差分信号作为到调制器的输入信号的减法器。

    Fluid ejection device
    7.
    发明授权
    Fluid ejection device 有权
    流体喷射装置

    公开(公告)号：US08419147B2

    公开(公告)日：2013-04-16

    申请号：US12605480

    申请日：2009-10-26

    申请人： Noritaka Ide ,  Kunio Tabata ,  Shinichi Miyazaki ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Nobuaki Azami

    发明人： Noritaka Ide ,  Kunio Tabata ,  Shinichi Miyazaki ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Nobuaki Azami

    IPC分类号： B41J29/38 ,  B41J2/045

    CPC分类号： B41J2/0459 ,  B41J2/04548 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588

    摘要： A fluid ejection device that ejects fluid from an ejection port includes: a drive element that ejects fluid in accordance with a difference between voltages applied to a first terminal and a second terminal; a drive voltage waveform storing unit that stores a drive voltage waveform applied to the drive element; a plurality of power supplies each having a different voltage; and a drive voltage waveform applying unit that applies the drive voltage waveform to the drive element by switching among the plurality of power supplies connected to the first and second terminals of the drive element.

    摘要翻译： 从喷射口喷出流体的流体喷射装置包括：驱动元件，其根据施加到第一端子和第二端子的电压之间的差异喷射流体; 驱动电压波形存储单元，其存储施加到驱动元件的驱动电压波形; 多个电源，每个电源具有不同的电压; 以及驱动电压波形施加单元，其通过在连接到驱动元件的第一和第二端子的多个电源之间切换来向驱动元件施加驱动电压波形。

    Capacitive load driving circuit, ink jet printer, and fluid ejecting apparatus
    10.
    发明授权
    Capacitive load driving circuit, ink jet printer, and fluid ejecting apparatus 有权
    电容式负载驱动电路，喷墨打印机和流体喷射装置

    公开(公告)号：US09102141B2

    公开(公告)日：2015-08-11

    申请号：US13075429

    申请日：2011-03-30

    申请人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Kunio Tabata ,  Shinichi Miyazaki ,  Noritaka Ide

    发明人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Kunio Tabata ,  Shinichi Miyazaki ,  Noritaka Ide

    IPC分类号： B41J29/38 ,  A61B17/3203 ,  B41J2/015 ,  B41J2/04 ,  B41J2/045 ,  H03F3/38 ,  H03F3/217 ,  H03F1/04 ,  H03F1/34 ,  H03K7/08

    CPC分类号： B41J2/0455 ,  A61B17/3203 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596

    摘要： A capacitive load driving circuit includes: a drive waveform signal generator that generates a drive waveform signal; a subtractor that outputs a differential signal between the drive waveform signal and a feedback signal; a modulator that pulse-modulates the differential signal and outputs a modulated signal; a digital power amplifier that amplifies the power of the modulated signal and outputs a power-amplified modulated signal; a smoothing filter that smoothes the power-amplified modulated signal, and outputs a drive signal of the capacitive load; a compensator that causes a phase to precede the drive signal; and an attenuator that attenuates signal amplitude in a band at least including a modulation frequency of the modulated signal. A signal output from a connecting point between the inductor and the wire is made to pass through the compensator and the attenuator and is then used as a feedback signal to the subtractor.

    摘要翻译： 电容性负载驱动电路包括：驱动波形信号发生器，其产生驱动波形信号; 减法器，其在所述驱动波形信号和反馈信号之间输出差分信号; 调制器，对所述差分信号进行脉冲调制并输出调制信号; 数字功率放大器，其放大调制信号的功率并输出功率放大调制信号; 平滑滤波器，其对功率放大调制信号进行平滑，并输出电容性负载的驱动信号; 使相位超前于驱动信号的补偿器; 以及衰减器，其衰减至少包括调制信号的调制频率的频带中的信号幅度。 从电感器和导线之间的连接点输出的信号通过补偿器和衰减器，然后被用作到减法器的反馈信号。