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公开(公告)号：US20110254887A1
公开(公告)日：2011-10-20
申请号：US13084707
申请日：2011-04-12
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。
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2.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
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。
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公开(公告)号：US20110234702A1
公开(公告)日：2011-09-29
申请号：US13072444
申请日：2011-03-25
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。
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公开(公告)号：US20110043559A1
公开(公告)日：2011-02-24
申请号：US12858296
申请日：2010-08-17
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。
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公开(公告)号：US20100328379A1
公开(公告)日：2010-12-30
申请号：US12821324
申请日：2010-06-23
IPC分类号： B41J29/38
CPC分类号： B41J2/04588 , B41J2/0452 , B41J2/04541 , B41J2/04548 , B41J2/0457 , B41J2/04581 , B41J2/04593 , B41J2/04596
摘要： A fluid ejection device includes: a modulator adapted to pulse-modulate a drive waveform signal forming a basis of a drive signal of an actuator to obtain a modulated signal; a digital power amplifier circuit adapted to power-amplify the modulated signal to obtain a power-amplified modulated signal; a low pass filter adapted to smooth the power-amplified modulated signal to obtain the drive signal; and a power amplification stopping section operating when holding a voltage of the actuator constant.
摘要翻译： 流体喷射装置包括：调制器，适于脉冲调制形成致动器的驱动信号的基础的驱动波形信号以获得调制信号; 数字功率放大器电路，其适于对所述调制信号进行功率放大以获得功率放大调制信号; 低通滤波器，用于平滑功率放大调制信号以获得驱动信号; 以及在保持致动器的电压恒定时工作的功率放大停止部。
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公开(公告)号：US20100117732A1
公开(公告)日：2010-05-13
申请号：US12615744
申请日：2009-11-10
申请人： Kunio TABATA , Atsushi OSHIMA , Noritaka IDE , Shinichi MIYAZAKI , Hiroyuki YOSHINO , Nobuaki AZAMI
发明人： Kunio TABATA , Atsushi OSHIMA , Noritaka IDE , Shinichi MIYAZAKI , Hiroyuki YOSHINO , Nobuaki AZAMI
IPC分类号： H03F3/217
CPC分类号： H03F3/217 , B41J2/04541 , B41J2/04568 , B41J2/04581 , B41J2/04588 , B41J2/04593 , B41J2/04596
摘要： A power amplifier includes: a modulator pulse-modulating a drive waveform signal serving as a reference of a drive signal applied to actuators and outputting a modulated signal; a digital power amplifier amplifying the power of the modulated signal and outputting an amplified digital signal; a low pass filter smoothing the amplified digital signal and outputting the drive signal; and an inverse filter circuit being disposed at a front stage of the modulator and capable of obtaining a desired waveform precision of the drive signal even when a frequency characteristic of a filter including the low pass filter and an electrostatic capacitor of the actuators varies depending on the number of driven actuators, wherein the inverse filter circuits include a plurality of inverse filters connected in series.
摘要翻译： 功率放大器包括：调制器，用于对驱动波形信号进行脉冲调制，所述驱动波形信号用作施加到致动器的驱动信号的参考，并输出调制信号; 数字功率放大器，放大调制信号的功率并输出放大的数字信号; 低通滤波器平滑放大的数字信号并输出驱动信号; 并且反相滤波器电路设置在调制器的前级，并且即使当包括低通滤波器的滤波器和致动器的静电电容器的频率特性根据所述驱动信号的频率特性变化时，也能够获得所需的驱动信号的波形精度 驱动致动器的数量，其中逆滤波器电路包括串联连接的多个反相滤波器。
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公开(公告)号：US20100103213A1
公开(公告)日：2010-04-29
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
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。
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公开(公告)号：US20100103212A1
公开(公告)日：2010-04-29
申请号：US12605466
申请日：2009-10-26
申请人： Kunio TABATA , Nobuaki AZAMI , Hiroyuki YOSHINO , Shinichi MIYAZAKI , Atsushi OSHIMA , Noritaka IDE
发明人： Kunio TABATA , Nobuaki AZAMI , Hiroyuki YOSHINO , Shinichi MIYAZAKI , Atsushi OSHIMA , Noritaka IDE
IPC分类号： B41J29/38
CPC分类号： B41J2/0459 , B41J2/04548 , B41J2/04573 , B41J2/04581 , B41J2/04588
摘要： A fluid ejection device configured to eject fluid from an ejection port includes a driving element that pressurizes the fluid and causes it to be ejected from the ejection port by being driven according to a voltage applied thereto. A driving voltage waveform selecting unit selects a driving voltage waveform to be applied to the driving element from among a plurality of types of the stored driving voltage waveforms. Power sources set the voltage to be outputted. A power source voltage determining unit determines voltages to be set to the power sources on the basis of the selected driving voltage waveform. A driving voltage waveform applying unit applies the selected driving voltage waveform to the driving element by setting the determined voltages to the power sources and connecting the power sources to the driving element while switching the same.
摘要翻译： 构造成从喷射口喷射流体的流体喷射装置包括驱动元件，该驱动元件对流体进行加压，并通过根据施加到喷射口的电压被驱动而从喷射口喷射。 驱动电压波形选择单元从多种存储的驱动电压波形中选择施加到驱动元件的驱动电压波形。 电源设置要输出的电压。 电源电压确定单元基于所选择的驱动电压波形确定要设置到电源的电压。 驱动电压波形施加单元通过将确定的电压设置到电源并将电源连接到驱动元件而将所选择的驱动电压波形施加到驱动元件，同时切换该驱动电压波形。
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公开(公告)号：US20100102882A1
公开(公告)日：2010-04-29
申请号：US12605475
申请日：2009-10-26
申请人： Hiroyuki YOSHINO , Nobuaki AZAMI , Shinichi MIYAZAKI , Kunio TABATA , Atsushi OSHIMA , Noritaka IDE
发明人： Hiroyuki YOSHINO , Nobuaki AZAMI , Shinichi MIYAZAKI , Kunio TABATA , Atsushi OSHIMA , Noritaka IDE
IPC分类号： H03F3/217
CPC分类号： B41J2/14274 , B41J2/04541 , B41J2/04581 , B41J2/04588
摘要： An electric load driving circuit for driving an electric load having a capacity component includes a plurality of power sources generating different voltages, capacitors provided parallel to the plurality of power sources, a switch control unit that switches connections between the capacitors and the electric load and thereby switching a voltage applied to the electric load, discharge paths that enable discharging electric charge stored in the capacitor, and a discharge control unit that controls a quantity of electric charge discharged from the discharge paths.
摘要翻译： 用于驱动具有电容分量的电负载的电负载驱动电路包括产生不同电压的多个电源，与多个电源并联设置的电容器，切换电容器与电负载之间的连接的开关控制单元 切换施加到电负载的电压，能够放电存储在电容器中的电荷的放电路径;以及放电控制单元，其控制从放电路径排出的电荷量。
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公开(公告)号：US20110109674A1
公开(公告)日：2011-05-12
申请号：US12914377
申请日：2010-10-28
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。
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