公开(公告)号：US08757749B2

公开(公告)日：2014-06-24

申请号：US13351770

申请日：2012-01-17

申请人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

发明人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

IPC分类号： B41J29/38 ,  B41J2/045

CPC分类号： B05B12/02 ,  A61J3/07 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/04581 ,  B41J2/17503

摘要： A liquid ejection device, includes: a drive waveform signal output circuit which outputs a drive waveform signal to serve as a reference for the drive signal; a modulator which pulse-modulates the drive waveform signal and thus generates a first modulated signal and a second modulated signal having a different phase from the first modulated signal within a range from greater than 90 degrees to smaller than 270 degrees; a first digital power amplifier; a second digital power amplifier a first low pass filter which performs low pass filtering of the first amplified digital signal and thus generates a first demodulated signal; and a second low pass filter which performs low pass filtering of the second amplified digital signal and thus generates a second demodulated signal; wherein the first demodulated signal and the second demodulated signal are combined and applied as the drive signal to the capacitive load.

摘要翻译： 一种液体喷射装置，包括：驱动波形信号输出电路，其输出用作驱动信号的基准的驱动波形信号; 调制器，其在大于90度至小于270度的范围内脉冲调制驱动波形信号，从而产生具有与第一调制信号不同相位的第一调制信号和第二调制信号; 第一个数字功率放大器; 第二数字功率放大器，对所述第一放大数字信号进行低通滤波并由此产生第一解调信号的第一低通滤波器; 以及第二低通滤波器，对第二放大数字信号进行低通滤波，从而产生第二解调信号; 其中第一解调信号和第二解调信号被组合并作为驱动信号施加到电容性负载。

公开(公告)号：US08733873B2

公开(公告)日：2014-05-27

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。

公开(公告)号：US08419147B2

公开(公告)日：2013-04-16

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 ,  B41J2/045

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。

公开(公告)号：US08398194B2

公开(公告)日：2013-03-19

申请号：US12623625

申请日：2009-11-23

申请人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Nobuaki Azami ,  Shinichi Miyazaki

发明人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Noritaka Ide ,  Kunio Tabata ,  Nobuaki Azami ,  Shinichi Miyazaki

IPC分类号： B41J29/38 ,  B41J2/015

CPC分类号： H03F3/217 ,  B41J2/04541 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596 ,  H03F3/2171 ,  H03F3/2173

摘要： A power amplifier includes: a modulator pulse-modulating a drive waveform signal serving as a reference of a drive signal applied to an actuator and outputting a plurality of modulated signals; a digital power amplifier having a plurality of digital power amplifier stages each including a pair of push-pull switching elements, amplifying the power of the plurality of modulated signals, and outputting multi-value amplified digital signals; and a low pass filter smoothing the amplified digital signals and outputting the drive signal, wherein the modulator includes a control section switching one of a state where the same modulated signal is connected to two or more of the digital power amplifier stages and a state where different modulated signals are connected to different digital power amplifier stages to the other.

公开(公告)号：US08393699B2

公开(公告)日：2013-03-12

申请号：US12843140

申请日：2010-07-26

申请人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Noritaka Ide

发明人： Hiroyuki Yoshino ,  Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Noritaka Ide

IPC分类号： B41J29/38 ,  B41J2/015

CPC分类号： H02M3/07 ,  B41J2/04541 ,  B41J2/04568 ,  B41J2/0457 ,  B41J2/04581 ,  Y10T307/724

摘要： A capacitive load driving circuit that drives an electrical load having a capacitive component, includes: a first power supply generating a first voltage; a second power supply generating a second voltage different from the first voltage; a plurality of charge storage elements charged by the first power supply; a first connection unit that connects the plurality of charge storage elements to the electrical load by switching connections among the charge storage elements; and a second connection unit that connects the second power supply to the electrical load.

摘要翻译： 一种用于驱动具有电容分量的电负载的电容性负载驱动电路，包括：产生第一电压的第一电源; 产生不同于所述第一电压的第二电压的第二电源; 由所述第一电源充电的多个电荷存储元件; 第一连接单元，通过切换电荷存储元件之间的连接来将多个电荷存储元件连接到电负载; 以及将所述第二电源连接到所述电负载的第二连接单元。

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

IPC分类号： B41J29/38 ,  H03F3/38

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。

公开(公告)号：US08690281B2

公开(公告)日：2014-04-08

申请号：US13295971

申请日：2011-11-14

申请人： Atsushi Oshima ,  Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Atsushi Oshima ,  Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： B41J29/38

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

摘要： A modulated signal is generated by performing pulse modulation of a drive waveform signal that is a reference for a drive signal to be applied to a capacitive load, and the drive signal is generated by performing power amplification of the acquired modulated signal and then smoothing the power-amplified modulated signal. Then, negative feedback of the drive signal applied to the capacitive load is applied to the drive waveform signal that is the reference for the drive signal. At this time, a predetermined analog compensation process for smoothing gain characteristics in a frequency band included in the drive signal is performed for the drive signal, then the acquired signal is converted into a digital signal, and negative feedback of the digital signal is applied to the drive waveform signal.

摘要翻译： 通过对驱动信号进行脉冲调制来生成调制信号，该驱动波形信号是作为对电容性负载的驱动信号的基准，通过对所获取的调制信号进行功率放大，然后使功率平滑化来生成驱动信号 放大调制信号。 然后，施加到电容性负载的驱动信号的负反馈被施加到作为驱动信号的参考的驱动波形信号。 此时，对驱动信号执行用于平滑驱动信号中包括的频带中的增益特性的预定的模拟补偿处理，然后将获取的信号转换为数字信号，并将数字信号的负反馈应用于 驱动波形信号。

公开(公告)号：US08313170B2

公开(公告)日：2012-11-20

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： B41J2/045 ,  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。

公开(公告)号：US08262180B2

公开(公告)日：2012-09-11

申请号：US11780379

申请日：2007-07-19

申请人： Atsushi Oshima ,  Kunio Tabata

发明人： Atsushi Oshima ,  Kunio Tabata

IPC分类号： B41J29/38

CPC分类号： B41J2/04593 ,  B41J2/04541 ,  B41J2/0455 ,  B41J2/04568 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04596 ,  B41J29/38

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 that applies a drive signal to the actuator, wherein the drive unit includes drive waveform signal generation unit that generates a drive waveform signal providing a basis of a signal for controlling the operation of 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, a low-pass filter for smoothing the power-amplified and modulated signal power-amplified by the digital power amplifier and supplying the actuator with the power-amplified and modulated signal as the drive signal, and carrier frequency adjusting unit that adjusts a carrier frequency of the pulse modulation by the modulator unit in accordance with the number of the actuators to be driven.

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，与每个喷嘴对应的致动器，以及向致动器施加驱动信号的驱动单元，其中驱动单元包括产生 提供用于控制致动器的信号的基础的驱动波形信号，对由驱动波形信号生成单元生成的驱动波形信号进行脉冲调制的调制器单元，用于对调制信号进行功率放大的数字功率放大器， 由调制器单元进行脉冲调制，一个低通滤波器，用于对由数字功率放大器进行功率放大和功率放大的功率放大和调制信号进行平滑处理，并为执行器提供功率放大和调制信号作为驱动信号，载波 频率调整单元，其根据所述致动器的数量调整所述调制器单元的脉冲调制的载波频率 rs被驱动。

公开(公告)号：US08172373B2

公开(公告)日：2012-05-08

申请号：US12724816

申请日：2010-03-16

申请人： Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Nobuaki Azami ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Nobuaki Azami ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： B41J2/045

CPC分类号： B41J2/04581 ,  B41J2/04541 ,  B41J2/04555 ,  B41J2/0457

摘要： A fluid ejection device including, a drive element capable of storing a charge depending on a voltage applied to the drive element, a first capacitor, a second capacitor, and a power recovery module that recovers power from the drive element by connecting the first capacitor and the second capacitor to the drive element in series, wherein the power recovery module switches the first capacitor out of the in-series connection to further recover power from the drive element.

摘要翻译： 一种流体喷射装置，包括：能够根据施加到驱动元件的电压存储电荷的驱动元件，第一电容器，第二电容器和功率恢复模块，其通过连接第一电容器和第二电容器来恢复来自驱动元件的电力; 所述驱动元件串联的所述第二电容器，其中所述功率恢复模块将所述第一电容器切换为所述串联连接，以进一步从所述驱动元件恢复功率。