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    • 2. 发明授权
    • Liquid ejection apparatus
    • 液体喷射装置
    • US08939534B2
    • 2015-01-27
    • US12905638
    • 2010-10-15
    • Shinichi MiyazakiKunio TabataAtsushi OshimaHiroyuki YoshinoNoritaka Ide
    • Shinichi MiyazakiKunio TabataAtsushi OshimaHiroyuki YoshinoNoritaka Ide
    • B41J29/38B41J2/045
    • B41J2/04591B41J2/04553B41J2/0456B41J2/04581B41J2/0459
    • 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.
    • 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。
    • 5. 发明授权
    • Load driving circuit, liquid ejection device, and printing apparatus
    • 负载驱动电路,液体喷射装置和打印装置
    • US08303065B2
    • 2012-11-06
    • US12858296
    • 2010-08-17
    • Shinichi MiyazakiKunio TabataAtsushi OshimaHiroyuki YoshinoNoritaka Ide
    • Shinichi MiyazakiKunio TabataAtsushi OshimaHiroyuki YoshinoNoritaka Ide
    • B41J29/38
    • B41J2/04588B41J2/04541B41J2/04573B41J2/04581
    • 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.
    • 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。
    • 7. 发明授权
    • Capacitive load driving device and fluid ejection device
    • 电容式负载驱动装置和流体喷射装置
    • US08262183B2
    • 2012-09-11
    • US13072444
    • 2011-03-25
    • Atsushi OshimaKunio TabataHiroyuki YoshinoShinichi MiyazakiNoritaka Ide
    • Atsushi OshimaKunio TabataHiroyuki YoshinoShinichi MiyazakiNoritaka Ide
    • B41J29/38
    • H03F3/2171A61B17/3203B41J2/04541B41J2/04568B41J2/04581B41J2/04588B41J2/04595B41J2/04596
    • 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.
    • 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。