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    DRIVING DEVICE AND DRIVING METHOD OF CAPACITIVE LOAD AND LIQUID JET PRINTING APPARATUS
    4.
    发明申请
    DRIVING DEVICE AND DRIVING METHOD OF CAPACITIVE LOAD AND LIQUID JET PRINTING APPARATUS 有权
    驱动装置及驱动装置和液体喷射装置的方法

    公开(公告)号：US20090140780A1

    公开(公告)日：2009-06-04

    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 JET APPARATUS
    5.
    发明申请
    LIQUID JET APPARATUS 有权
    液体喷射装置

    公开(公告)号：US20090167798A1

    公开(公告)日：2009-07-02

    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： B41J2/015 ,  H02N2/06

    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 lowpass 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，其中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，其适于基于驱动波形信号的数据修改调制器的脉冲调制的调制周期。

    CAPACITIVE LOAD DRIVING DEVICE AND LIQUID JET APPARATUS
    6.
    发明申请
    CAPACITIVE LOAD DRIVING DEVICE AND LIQUID JET APPARATUS 审中-公开
    电力负载驱动装置和液体喷射装置

    公开(公告)号：US20110254887A1

    公开(公告)日：2011-10-20

    申请号：US13084707

    申请日：2011-04-12

    申请人： Noritaka IDE ,  Kunio TABATA ,  Shinichi MIYAZAKI ,  Atsushi OSHIMA ,  Hiroyuki YOSHINO

    发明人： Noritaka IDE ,  Kunio TABATA ,  Shinichi MIYAZAKI ,  Atsushi OSHIMA ,  Hiroyuki YOSHINO

    IPC分类号： B41J29/38 ,  G05F1/10

    CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/04568 ,  B41J2/04573 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593

    摘要： A capacitive load driving device includes a drive waveform generator that generates a drive waveform signal, a subtractor that outputs a difference signal between the drive waveform signal and a feedback signal, a modulator that pulse-modulates the difference signal to output a modulated signal, a digital power amplifier that amplifies the modulated signal to output an amplified digital signal, a low pass filter that smoothes the amplified digital signal to output a drive signal for a capacitive load, a feedback circuit that outputs the feedback signal obtained from the drive signal, and an adjusting section that adjusts frequency characteristics of the feedback circuit based on capacitance of the capacitive load to be driven.

    摘要翻译： 容性负载驱动装置包括产生驱动波形信号的驱动波形发生器，输出驱动波形信号和反馈信号之间的差分信号的减法器，对差分信号进行脉冲调制以输出调制信号的调制器， 数字功率放大器，其放大调制信号以输出放大的数字信号;低通滤波器，其使放大的数字信号平滑以输出用于容性负载的驱动信号;反馈电路，输出从驱动信号获得的反馈信号，以及 调整部，其基于要驱动的电容性负载的电容来调整反馈电路的频率特性。

    CAPACITIVE LOAD DRIVING CIRCUIT, INK JET PRINTER, AND FLUID EJECTING APPARATUS
    7.
    发明申请
    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：US20110242172A1

    公开(公告)日：2011-10-06

    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： B41J2/11 ,  H03B5/04

    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。

    CAPACITIVE LOAD DRIVING DEVICE AND FLUID EJECTION DEVICE
    8.
    发明申请
    CAPACITIVE LOAD DRIVING DEVICE AND FLUID EJECTION DEVICE 有权
    电容负载驱动装置和流体喷射装置

    公开(公告)号：US20110234702A1

    公开(公告)日：2011-09-29

    申请号：US13072444

    申请日：2011-03-25

    申请人： Atsushi OSHIMA ,  Kunio TABATA ,  Hiroyuki YOSHINO ,  Shinichi MIYAZAKI ,  Noritaka IDE

    发明人： Atsushi OSHIMA ,  Kunio TABATA ,  Hiroyuki YOSHINO ,  Shinichi MIYAZAKI ,  Noritaka IDE

    IPC分类号： B41J2/04 ,  H03K3/00

    CPC分类号： H03F3/2171 ,  A61B17/3203 ,  B41J2/04541 ,  B41J2/04568 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04595 ,  B41J2/04596

    摘要： A capacitive load driving device includes a drive waveform generator adapted to generate a drive waveform signal, a subtraction section adapted to output a differential signal between the drive waveform signal and two feedback signals, a modulator adapted to perform pulse modulation on the differential signal to obtain a modulated signal; a digital power amplifier adapted to power-amplify the modulated signal to obtain an amplified digital signal, a low pass filter including an inductor and a capacitor, and adapted to smooth the amplified digital signal to obtain a drive signal of a capacitive load, a first feedback circuit adapted to feedback the drive signal to the subtraction section as a first feedback signal, and a second feedback circuit adapted to set forward a phase of the drive signal and to feed back the drive signal to the subtraction section as a second feedback signal.

    摘要翻译： 一种电容性负载驱动装置，包括适于产生驱动波形信号的驱动波形发生器，适于在驱动波形信号和两个反馈信号之间输出差分信号的减法部分，适于对差分信号执行脉冲调制以获得 调制信号; 数字功率放大器，其适于对所述调制信号进行功率放大以获得放大数字信号，包括电感器和电容器的低通滤波器，并且适于平滑所述放大数字信号以获得电容性负载的驱动信号;第一 反馈电路，其适于将所述驱动信号反馈到所述减法部分作为第一反馈信号;以及第二反馈电路，其适于设置所述驱动信号的相位并将所述驱动信号反馈到所述减法部分作为第二反馈信号。

    LOAD DRIVING CIRCUIT, LIQUID EJECTION DEVICE, AND PRINTING APPARATUS
    9.
    发明申请
    LOAD DRIVING CIRCUIT, LIQUID EJECTION DEVICE, AND PRINTING APPARATUS 有权
    负载驱动电路，液体喷射装置和打印装置

    公开(公告)号：US20110043559A1

    公开(公告)日：2011-02-24

    申请号：US12858296

    申请日：2010-08-17

    申请人： Shinichi MIYAZAKI ,  Kunio TABATA ,  Atsushi OSHIMA ,  Hiroyuki YOSHINO ,  Noritaka IDE

    发明人： Shinichi MIYAZAKI ,  Kunio TABATA ,  Atsushi OSHIMA ,  Hiroyuki YOSHINO ,  Noritaka IDE

    IPC分类号： B41J29/38 ,  H02J7/00

    CPC分类号： B41J2/04588 ,  B41J2/04541 ,  B41J2/04573 ,  B41J2/04581

    摘要： A load driving circuit includes first storage elements charged by a power supply and a series storage element group constituting unit that switches the connection state between the first storage elements to constitute a series storage element group in which the first storage elements are connected in series. A second storage element charging unit charges a second storage element using the series storage element group. Switching is performed between first and second connection states to apply voltage to the load. In the first connection state, the charged second storage element and the series storage element group are connected to the load while the second storage element and the series storage element group are connected in series. In the second connection state, the series storage element group is connected to the load while the series connection between the second storage element and the series storage element group is broken.

    摘要翻译： 负载驱动电路包括由电源充电的第一存储元件和串联存储元件组构成单元，其切换第一存储元件之间的连接状态，以构成其中第一存储元件串联连接的串联存储元件组。 第二存储元件充电单元使用串联存储元件组对第二存储元件充电。 在第一和第二连接状态之间进行切换，以向负载施加电压。 在第一连接状态下，充电的第二存储元件和串联存储元件组连接到负载，而第二存储元件和串联存储元件组串联连接。 在第二连接状态下，串联存储元件组连接到负载，同时第二存储元件和串联存储元件组之间的串联断开。

    LIQUID EJECTION DEVICE AND LIQUID EJECTION PRINTER
    10.
    发明申请
    LIQUID EJECTION DEVICE AND LIQUID EJECTION PRINTER 有权
    液体喷射装置和液体喷射打印机

    公开(公告)号：US20120287187A1

    公开(公告)日：2012-11-15

    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。