公开(公告)号：US20080018687A1

公开(公告)日：2008-01-24

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。

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：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：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。

公开(公告)号：US20090097081A1

公开(公告)日：2009-04-16

申请号：US12250813

申请日：2008-10-14

申请人： Kunio Tabata ,  Kaneo Yoda ,  Toshiyuki Suzuki ,  Atsushi Oshima

发明人： Kunio Tabata ,  Kaneo Yoda ,  Toshiyuki Suzuki ,  Atsushi Oshima

IPC分类号： H04N1/04

CPC分类号： B41J11/007 ,  B41J19/205

摘要： A detecting apparatus includes a target section in which target elements to be detected are arranged in the direction of the motion of a moving body; a detecting section that detects the target elements with the motion of the moving body and outputs a waveform signal having an output level corresponding to its detection sensitivity; a first-digital-signal output section that binarizes the waveform signal with reference to a first threshold to output a first digital signal; a second-digital-signal output section that binarizes the waveform signal with reference to a second threshold which is higher in absolute value than the first threshold to output a second digital signal; and a determining section that determines whether the second digital signal has changed in status.

摘要翻译： 检测装置包括目标部分，其中待检测的目标元件沿移动体的运动方向排列; 检测部，其利用所述移动体的运动来检测所述目标要素，并输出具有与其检测灵敏度对应的输出电平的波形信号; 第一数字信号输出部分，其参考第一阈值二值化波形信号以输出第一数字信号; 第二数字信号输出部分，相对于绝对值高于第一阈值的第二阈值二值化波形信号，以输出第二数字信号; 以及确定部分，其确定所述第二数字信号是否已经改变状态。

公开(公告)号：US06483270B1

公开(公告)日：2002-11-19

申请号：US09508582

申请日：2000-10-06

申请人： Shinichi Miyazaki ,  Kunio Tabata ,  Akihito Uetake ,  Akihiko Ikegami ,  Osamu Shinkawa

发明人： Shinichi Miyazaki ,  Kunio Tabata ,  Akihito Uetake ,  Akihiko Ikegami ,  Osamu Shinkawa

IPC分类号： H02P146

CPC分类号： G05B19/231 ,  G05B2219/37144 ,  G05B2219/37317 ,  H02P6/182 ,  H02P6/21

摘要： The present invention relates to a control method and a control device for a position sensorless motor which has position sensorless operation and synchronized operation, wherein a rotation position of a rotor is detected on the basis of counter electromotive forces generated in stator coils in the position sensorless operation, the stator coils are excited in synchronization with the detected rotation position of the rotor to rotate the rotor and a deviation between a target position and the present position is determined from a target rotation position according to the position command signal and the detected rotation position, position sensorless close loop drive is made on the basis of the determined deviation, and when the synchronized operation is made, the stator coils of the motor are excited in synchronization with the position command signal to rotate the rotor.

摘要翻译： 本发明涉及一种无位置传感器电动机的控制方法和控制装置，其具有位置无传感器操作和同步操作，其中，基于位置无传感器中的定子线圈中产生的反电动势来检测转子的旋转位置 定子线圈与检测到的转子的旋转位置同步地被激励，以使转子旋转，并且根据位置指令信号和检测到的旋转位置从目标旋转位置确定目标位置与当前位置之间的偏差 基于所确定的偏差进行无位置传感器闭环驱动，并且当进行同步操作时，电动机的定子线圈与位置指令信号同步地激励以使转子旋转。

公开(公告)号：US09097244B2

公开(公告)日：2015-08-04

申请号：US13595987

申请日：2012-08-27

申请人： Takahiro Matsuzaki ,  Takeshi Seto ,  Kunio Tabata ,  Shinichi Miyazaki

发明人： Takahiro Matsuzaki ,  Takeshi Seto ,  Kunio Tabata ,  Shinichi Miyazaki

IPC分类号： A61B17/3203 ,  F04B13/02 ,  F04B43/04 ,  F04B17/03 ,  F04B45/047

CPC分类号： F04B13/02 ,  A61B17/3203 ,  F04B17/03 ,  F04B43/046 ,  F04B45/047

摘要： A fluid feeding pump which varies a volume of a pump chamber and thus feeds a fluid out of the pump chamber, includes: a piezoelectric element which accumulates electric charges inside when a voltage is applied, and which deforms according to an amount of accumulated electric charges and thus increases or decreases the volume of the pump chamber; a drive unit which applies a drive signal with a waveform increasing to a predetermined maximum voltage and then decreasing, and thus drives the piezoelectric element; and an air bubble determining unit which detects a current flowing through the piezoelectric element within a predetermined period after the drive signal is applied to the piezoelectric element, and thus determines whether there are air bubbles in the pump chamber or not.

摘要翻译： 一种流体输送泵，其改变泵室的体积，从而将流体输送出泵室，包括：压电元件，其在施加电压时内部积聚电荷，并且根据累积电荷的量变形 从而增加或减小泵室的体积; 驱动单元，其施加具有增加到预定最大电压然后减小的波形的驱动信号，从而驱动压电元件; 以及气泡判定单元，其在将驱动信号施加到压电元件之后的预定时间内检测流过压电元件的电流，从而确定泵室中是否存在气泡。