-
公开(公告)号：US08313161B2
公开(公告)日：2012-11-20
申请号：US12914628
申请日：2010-10-28
IPC分类号： B41J29/38
CPC分类号： B41J2/04588 , B41J2/04541 , B41J2/04548 , B41J2/04563 , B41J2/0457 , B41J2/0459 , B41J2/04593 , B41J2/04596
摘要： A liquid ejecting apparatus includes: a Modulator that performs pulse modulation for a drive waveform signal that becomes a reference for a drive signal of an actuator so as to acquire a modulated signal; a digital power amplifier that amplifies the power of the modulated signal so as to acquire a amplified digital signal; a low pass filter that smoothes the amplified digital signal so as to acquire the drive signal; a variable power source circuit that can change a power source voltage of the digital power amplifier; and a power source voltage control unit that controls changes in the power source voltage in units of a driving pulse that configures the drive signal of the actuator and can independently drive the actuator.
摘要翻译： 液体喷射装置包括：调制器，对作为致动器的驱动信号的基准的驱动波形信号进行脉冲调制，以获取调制信号; 数字功率放大器，其放大调制信号的功率，以获取放大的数字信号; 低通滤波器，其对放大的数字信号进行平滑以便获取驱动信号; 可变电源电路，其可以改变数字功率放大器的电源电压; 以及电源电压控制单元，其以构成所述致动器的驱动信号并且可以独立地驱动所述致动器的驱动脉冲为单位来控制所述电源电压的变化。
-
公开(公告)号：US08256858B2
公开(公告)日：2012-09-04
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。
-
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。
-
14.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.
-
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。
-
16.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。
-
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。
-
18.发明授权公开(公告)号：US08773098B2
公开(公告)日：2014-07-08
申请号：US13420679
申请日：2012-03-15
申请人： Kunio Tabata , Atsushi Oshima , Hiroyuki Yoshino , Noritaka Ide
发明人： Kunio Tabata , Atsushi Oshima , Hiroyuki Yoshino , Noritaka Ide
IPC分类号： H02M3/156
CPC分类号： H03K3/012 , B41J2/04541 , B41J2/04581 , H02M3/156 , H02M3/157
摘要： Operation of a digital power amplifier for power amplification of a modulated signal is stopped in a period in which a voltage value of a drive signal applied to a capacitive load is constant, to thereby suppress power loss. The power amplification is stopped either when half a period of time when the modulated signal in a first voltage state maintains the first voltage state elapses or when half a period of time when the modulated signal in a second voltage state which is lower in voltage than the first voltage state maintains the second voltage state elapses. Accordingly, when electric current does not flow in a inductor of a low pass filter, it is possible to stop the power amplification. Thus, it is possible to prevent generation of voltage fluctuation in the drive signal due to an electromotive force caused by a self-induction phenomenon of the inductor.
摘要翻译： 在施加到电容性负载的驱动信号的电压值恒定的时段内停止用于调制信号的功率放大的数字功率放大器的操作，从而抑制功率损耗。 当第一电压状态下的调制信号保持第一电压状态或当电压低于第二电压状态的第二电压状态的调制信号的半个时间段的半个时间段停止功率放大， 第一电压状态保持第二电压状态已经过去。 因此，当电流不在低通滤波器的电感器中流动时，可以停止功率放大。 因此，可以防止由电感器的自感现象引起的电动势引起的驱动信号中的电压波动的产生。
-
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
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：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。
-
-
-
-
-
-
-
-
-
搜索结果
75 条记录 (耗时 0.027 秒)