公开(公告)号：US08262183B2

公开(公告)日：2012-09-11

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： 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。

公开(公告)号：US08262181B2

公开(公告)日：2012-09-11

申请号：US12821339

申请日：2010-06-23

申请人： Atsushi Oshima

发明人： Atsushi Oshima

IPC分类号： B41J29/38

CPC分类号： B41J2/04588 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04573 ,  B41J2/04581

摘要： A fluid ejection device includes, a modulator, a digital power amplifier, a low pass filter, and an inverse filter circuit, including, a delay device, a subtracter that subtracts an output signal of the delay device from a drive waveform signal, an amplifier adapted to amplify an output signal of the subtracter, an adder that adds an output signal of the amplifier and another input signal, a first switch adapted to perform switching so as to set either one of the drive waveform signal and an output signal of the adder to be an input signal of the delay device, a second switch adapted to perform switching so as to set either one of the drive waveform signal and the output signal of the delay device to be the another input signal of the adder, and a switch connection control section that controls the first switch and the second switch.

摘要翻译： 流体喷射装置包括调制器，数字功率放大器，低通滤波器和逆滤波器电路，包括延迟装置，从驱动波形信号中减去延迟装置的输出信号的减法器，放大器 适于放大所述减法器的输出信号，加法器，其将所述放大器的输出信号和另一输入信号相加;第一开关，其适于执行切换以便设置所述驱动波形信号和所述加法器的输出信号中的任一个 作为延迟装置的输入信号，第二开关适于执行切换，以便将延迟装置的驱动波形信号和输出信号中的任一个设置为加法器的另一个输入信号，以及开关连接 控制部分，其控制第一开关和第二开关。

公开(公告)号：US08100493B2

公开(公告)日：2012-01-24

申请号：US12637412

申请日：2009-12-14

申请人： Atsushi Oshima ,  Kunio Tabata

发明人： Atsushi Oshima ,  Kunio Tabata

IPC分类号： B41J29/38 ,  H03F3/38

摘要： A liquid jet apparatus according to the present invention includes a plurality of nozzles, an actuator provided for each nozzle and connected to the respective nozzle, and a drive unit for applying a drive signal to the actuator. The drive unit includes a drive waveform generator that generates a drive waveform signal for controlling the drive of the actuator, a modulator for performing a pulse modulation of the drive waveform signal to produce a modulated signal, a digital power amplifier for power amplifying the modulated signal to produce an amplified signal, a low-pass filter for smoothing the amplified signal and supplying the drive signal to the actuator, and a modulation signal correcting unit that corrects the modulated signal according to a power supply voltage of the digital power amplifier.

公开(公告)号：US08100491B2

公开(公告)日：2012-01-24

申请号：US11780357

申请日：2007-07-19

申请人： Atsushi Oshima ,  Kunio Tabata ,  Toshiyuki Suzuki ,  Osamu Shinkawa ,  Tomoki Hatano

发明人： Atsushi Oshima ,  Kunio Tabata ,  Toshiyuki Suzuki ,  Osamu Shinkawa ,  Tomoki Hatano

IPC分类号： B41J29/38

摘要： A liquid jet apparatus includes a plurality of nozzles provided to the liquid jet head, an actuator provided corresponding to each of the nozzles, drive unit that applies a drive signal to the actuator, drive waveform signal generation unit that generates a drive waveform signal providing a reference of a signal for controlling the actuator, modulator unit that pulse-modulates the drive waveform signal generated by the drive waveform signal generation unit, a digital power amplifier for power-amplifying the modulated signal, which is pulse-modulated by the modulator unit, and a low-pass filter provided individually corresponding to the actuator and for supplying the actuator with the power amplified modulated signal power-amplified by the digital power amplifier as a drive signal after smoothing.

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。

公开(公告)号：US07984956B2

公开(公告)日：2011-07-26

申请号：US12498296

申请日：2009-07-06

申请人： Kunio Tabata ,  Atsushi Oshima

发明人： Kunio Tabata ,  Atsushi Oshima

IPC分类号： B41J29/38

CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/04578 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596

摘要： A liquid jet apparatus according to the present invention is a liquid jet apparatus including a plurality of nozzles, an actuator provided for each nozzle and connected to the respective nozzle, a drive waveform signal generation unit that generates a drive pulse, and a drive unit that applies the drive pulse to the actuator, wherein the drive unit includes a transistor pair, wherein the transistor pair: has two transistors connected to each other in a push-pull manner, and power-amplifies the drive pulse. The drive unit also includes a low-pass filter disposed between the transistor pair and the actuator.

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，包括多个喷嘴，为每个喷嘴设置并连接到各个喷嘴的致动器，产生驱动脉冲的驱动波形信号产生单元和驱动单元， 将驱动脉冲施加到致动器，其中驱动单元包括晶体管对，其中晶体管对：具有以推挽方式彼此连接的两个晶体管，并对驱动脉冲进行功率放大。 驱动单元还包括设置在晶体管对和致动器之间的低通滤波器。

公开(公告)号：US07823720B2

公开(公告)日：2010-11-02

申请号：US12396238

申请日：2009-03-02

申请人： Kunio Tabata ,  Toshiyuki Suzuki ,  Atsushi Oshima

发明人： Kunio Tabata ,  Toshiyuki Suzuki ,  Atsushi Oshima

IPC分类号： B65G43/00 ,  B65G39/16 ,  B41J29/38 ,  G03G15/00

CPC分类号： B41J11/007 ,  B65G39/16

摘要： A belt transport device includes: a drive roller which is driven by a power source; a driven roller which is held in a rotatable manner; an endless belt which is wound on the drive roller and the driven roller; a band-like detecting section which is arranged on the endless belt in a circumferential direction of the endless belt; a sensor which detects the band-like detecting section; a displacement unit which displaces a relative positional relationship between the band-like detecting section and the sensor in a width direction of the endless belt.

摘要翻译： 带传送装置包括：由电源驱动的驱动辊; 以可旋转的方式保持的从动辊; 卷绕在驱动辊和从动辊上的环形带; 带状检测部，其沿环状带的圆周方向配置在环状带上; 检测带状检测部的传感器; 位移单元，其在环形带的宽度方向上移位带状检测部和传感器之间的相对位置关系。

公开(公告)号：US20100220133A1

公开(公告)日：2010-09-02

申请号：US12161201

申请日：2007-01-17

申请人： Atsushi Oshima ,  Kunio Tabata ,  Osamu Shinkawa ,  Toshiyuki Suzuki ,  Tomoki Hatano

发明人： Atsushi Oshima ,  Kunio Tabata ,  Osamu Shinkawa ,  Toshiyuki Suzuki ,  Tomoki Hatano

IPC分类号： B41J2/045

CPC分类号： B41J2/04596 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/04568 ,  B41J2/04578 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04591 ,  B41J2/04595

摘要： A head drive device of an inkjet printer having a nozzles and corresponding actuators that jet liquid drops. A drive section applies a drive signal to the actuators. The head drive device includes a drive waveform generating section that generates a drive waveform signal which is used as a reference of a signal to control drive of the actuators. A modulating section modulates a pulse of a drive waveform signal generated by the drive waveform generating section. A digital power amplifier amplifies power of a modulated signal subjected to the pulse modulation. A low pass filter smoothes a power-amplified modulated signal subjected to the power amplification by the digital power amplifier and supplies the signal as a drive signal to the actuators. A frequency characteristics adjusting section adjusts frequency characteristics of the low pass filter as a function of the number of the actuators.

摘要翻译： 一种喷墨打印机的头驱动装置，其具有喷嘴和喷射液滴的相应致动器。 驱动部分向驱动器施加驱动信号。 磁头驱动装置包括驱动波形产生部分，其产生驱动波形信号，该驱动波形信号用作用于控制致动器驱动的信号的参考。 调制部调制由驱动波形生成部生成的驱动波形信号的脉冲。 数字功率放大器放大经受脉冲调制的调制信号的功率。 低通滤波器对由数字功率放大器进行功率放大的功率放大调制信号进行平滑，并将该信号作为驱动信号提供给致动器。 频率特性调整部分根据致动器的数量调节低通滤波器的频率特性。

公开(公告)号：US20090266640A1

公开(公告)日：2009-10-29

申请号：US12093234

申请日：2006-11-09

申请人： Atsushi Oshima ,  Shigeru Endou

发明人： Atsushi Oshima ,  Shigeru Endou

IPC分类号： B62D5/04 ,  F16H55/18

CPC分类号： B62D5/04 ,  B62D5/0403 ,  B62D5/0409 ,  Y10T74/19623

摘要： Since a housing 101 is integrally formed with a frame main body 123A of a frame 223 so as to surround a rotor yoke 258 and a stator yoke 242, heat generated from a motor 109 is conducted to the housing 101 to be thereby emitted to the outside. Accordingly, a heat transfer property and a cooling effect of the motor 109 are remarkably improved compared with a case that the housing 101 is formed into a member separated from a frame 123. As a result, it is possible to realize an increase in output of the motor 109 as well as a decrease in size and weight, thereby realizing a decrease in size of an electric power steering apparatus as a whole.

摘要翻译： 由于壳体101与框架223的框架主体123A一体地形成为围绕转子轭258和定子磁轭242，所以从电动机109产生的热量被传导到壳体101，从而被发射到外部 。 因此，与壳体101形成为与框架123分离的构件的情况相比，电动机109的传热特性和冷却效果显着提高。结果，可以实现增加输出 电动机109以及尺寸和重量的减小，从而实现整体上电动转向装置的尺寸的减小。

公开(公告)号：US07585037B2

公开(公告)日：2009-09-08

申请号：US11780390

申请日：2007-07-19

申请人： Kunio Tabata ,  Atsushi Oshima

发明人： Kunio Tabata ,  Atsushi Oshima

IPC分类号： B41J29/38

CPC分类号： B41J29/38 ,  B41J2/04541 ,  B41J2/04578 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596

摘要： A liquid jet apparatus includes a plurality of nozzles provided to a liquid jet head, an actuator provided corresponding to each of the nozzles, and drive unit for applying a drive pulse to the actuator, wherein the drive unit includes drive waveform signal generation unit that generates one or more of drive waveform signals each providing basis of the drive pulse to the actuator, one or more of transistor pairs provided as many as the number of the actuators in order for power-amplifying the one or more of drive waveform signals generated by the drive waveform signal generation unit, and each having two transistors forming a pair and connected to each other in a push-pull manner, and one or more of low-pass filters provided as many as the number of the actuators and each disposed between a connection point of the transistor pair and the actuator.

摘要翻译： 一种液体喷射装置，包括设置在液体喷射头上的多个喷嘴，与每个喷嘴相对应的致动器，以及用于向致动器施加驱动脉冲的驱动单元，其中驱动单元包括驱动波形信号生成单元， 一个或多个驱动波形信号，每个驱动波形信号各自提供到致动器的驱动脉冲的基础，一个或多个晶体管对提供与执行器的数量一样多的功率放大器，其中所述驱动波形信号由 驱动波形信号生成单元，并且每个具有形成一对并且以推挽方式彼此连接的两个晶体管，以及一个或多个低通滤波器，其设置为多个致动器的数量，并且各自设置在连接 晶体管对和执行器。