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公开(公告)号：US08939534B2
公开(公告)日：2015-01-27
申请号：US12905638
申请日：2010-10-15
CPC分类号： B41J2/04591 , B41J2/04553 , B41J2/0456 , B41J2/04581 , B41J2/0459
摘要： A liquid ejection apparatus which, by applying a drive voltage waveform to a piezoelectric element which drives an ejection nozzle, ejects a liquid from the ejection nozzle. The apparatus includes a reference voltage generating unit which generates a plurality of reference voltages, a drive voltage waveform data storage unit classifies the drive voltage waveform as either a voltage increasing section, decreasing section, or holding section, and stores drive voltage waveform data including a required time of a waveform section configuring the drive voltage waveform, and a voltage, selected from the plurality of reference voltages for the waveform section. The apparatus also includes a drive voltage waveform application unit which, in accordance with information relating to an adjustment of the ejection amount of the liquid ejected from the ejection nozzle, changes the required time included in the drive voltage waveform data, and applies the drive voltage waveform to the piezoelectric element.
摘要翻译： 一种液体喷射装置，其通过将驱动电压波形施加到驱动喷嘴的压电元件，从喷嘴喷出液体。 该装置包括产生多个参考电压的参考电压产生单元，驱动电压波形数据存储单元将驱动电压波形分类为升压部分，降压部分或保持部分，并存储驱动电压波形数据，其包括 配置驱动电压波形的波形部分的所需时间以及从波形部分的多个参考电压中选择的电压。 该装置还包括驱动电压波形施加单元，其根据与从喷射喷嘴喷射的液体的喷射量的调整相关的信息改变包括在驱动电压波形数据中的所需时间，并施加驱动电压 波形到压电元件。
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公开(公告)号：US08693225B2
公开(公告)日：2014-04-08
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： H02J1/10
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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23.发明授权公开(公告)号：US08382224B2
公开(公告)日：2013-02-26
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.
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公开(公告)号：US08303065B2
公开(公告)日：2012-11-06
申请号：US12858296
申请日：2010-08-17
IPC分类号： B41J29/38
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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25.发明授权Capacitive load driving circuit, liquid ejection device, and printing apparatus 有权电容负载驱动电路，液体喷射装置和打印装置公开(公告)号：US08303064B2
公开(公告)日：2012-11-06
申请号：US12839765
申请日：2010-07-20
IPC分类号： B41J29/38
CPC分类号： H03K4/023 , B41J2/04541 , B41J2/04553 , B41J2/04568 , B41J2/0457 , B41J2/04581
摘要： A capacitive load driving circuit that drives a capacitive load, includes: a power supply unit that generates different voltages; a plurality of charge storage elements that are charged with the different voltages generated by the power supply unit; and a load driving section that connects a charge storage element arbitrarily selected from the plurality of charge storage elements to the capacitive load to drive the capacitive load, and connects, when at least two of the charge storage elements are selected, the at least two charge storage elements to the capacitive load in a state where the at least two charge storage elements are connected in series.
摘要翻译： 一种驱动电容性负载的容性负载驱动电路，包括：产生不同电压的电源单元; 多个电荷存储元件，其被所述电源单元产生的不同电压充电; 以及负载驱动部，其将从所述多个电荷存储元件任意选择的电荷存储元件连接到所述电容性负载，以驱动所述电容性负载，并且当选择了所述至少两个所述电荷存储元件时，连接所述至少两个电荷 在所述至少两个电荷存储元件串联连接的状态下将所述存储元件连接到所述电容性负载。
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公开(公告)号：US08262183B2
公开(公告)日：2012-09-11
申请号：US13072444
申请日：2011-03-25
IPC分类号： B41J29/38
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：US08022743B2
公开(公告)日：2011-09-20
申请号：US12582766
申请日：2009-10-21
申请人： Shinichi Miyazaki , Hiroyuki Yoshino , Nobuaki Azami , Atsushi Oshima , Noritaka Ide , Kunio Tabata
发明人： Shinichi Miyazaki , Hiroyuki Yoshino , Nobuaki Azami , Atsushi Oshima , Noritaka Ide , Kunio Tabata
IPC分类号： H03K3/017
CPC分类号： H03K7/08 , B41J2/04541 , B41J2/04581 , B41J2/04588 , B41J2/04593 , B41J2/04596 , H03K5/15013 , H03K2005/00247
摘要： A pulse width modulation circuit includes: a reference signal generator which generates a plurality of mutually differing reference signals; a comparator which compares the reference signals and an input signal with respect to magnitude, and outputs results of the comparison as a plurality of comparison signals with mutually differing phases; and a synthesizer which, using a logical operation, outputs the plurality of comparison signals output from the comparator as a pulse width modulated signal configured of one or more binary signals.
摘要翻译： 脉冲宽度调制电路包括：参考信号发生器，其生成多个相互不同的参考信号; 比较器，比较参考信号和输入信号相对于幅度，并将比较结果作为具有相互不同相位的多个比较信号; 以及合成器，其使用逻辑运算将从比较器输出的多个比较信号作为由一个或多个二进制信号配置的脉宽调制信号输出。
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公开(公告)号：US08596740B2
公开(公告)日：2013-12-03
申请号：US13353224
申请日：2012-01-18
申请人： Atsushi Oshima , Kunio Tabata , Noritaka Ide , Shinichi Miyazaki , Hiroyuki Aizawa , Seiichi Taniguchi
发明人： Atsushi Oshima , Kunio Tabata , Noritaka Ide , Shinichi Miyazaki , Hiroyuki Aizawa , Seiichi Taniguchi
IPC分类号： B41J2/01
CPC分类号： B41J2/04596 , B41J2/04548 , B41J2/04568 , B41J2/0457 , B41J2/04581 , B41J2/04588 , B41J2/04593
摘要： A liquid jet apparatus according to the present invention includes a drive circuit adapted to apply a drive signal to an actuator of a liquid jet head, and a power supply voltage control circuit adapted to control a power supply voltage to the drive signal to be a waveform voltage set previously based on a reference signal obtained from one of the drive signal and a signal in a generation stage of the drive signal.
摘要翻译： 根据本发明的液体喷射装置包括适于将驱动信号施加到液体喷射头的致动器的驱动电路，以及适于将驱动信号的电源电压控制为波形的电源电压控制电路 基于从驱动信号中的一个获得的参考信号和驱动信号的生成级中的信号预先设定的电压。
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29.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。
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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
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。
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