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    • 5. 发明授权
    • Head drive apparatus of ink jet printer, head driving method, and ink jet printer
    • 喷墨打印机的头驱动装置,头驱动方法和喷墨打印机
    • US08201905B2
    • 2012-06-19
    • US12161900
    • 2007-01-25
    • Toshiyuki SuzukiKunio TabataOsamu ShinkawaTomoki HatanoAtsushi Oshima
    • Toshiyuki SuzukiKunio TabataOsamu ShinkawaTomoki HatanoAtsushi Oshima
    • B41J29/38
    • B41J2/04588B41J2/04541B41J2/04581B41J2/04593B41J2/04596
    • With an appropriate signal transmission form, a drive pulse output circuit is mounted to an ink jet head, so that waveform distortion of an actuator drive pulse for jet of ink drops is inhibited or prevented. Modulated signal data in memory is read to output a modulated signal, which is power-amplified by a digital power amplifier. The amplified digital signal is smoothed to be output to an actuator as a drive pulse. As a result, the digital power amplifier having high amplification efficiency efficiently amplifies the power of the modulated signal, thereby eliminating the need to use a cooling unit. The drive pulse output circuit can be mounted to the ink jet heads, thereby shortening the transmission path of an actuator drive pulse, which inhibits or prevents any waveform distortion of the drive pulse. The transmission of the modulated signal data DATA is implemented with a low frequency.
    • 通过适当的信号传输形式,驱动脉冲输出电路被安装到喷墨头,从而抑制或防止用于喷墨喷墨的致动器驱动脉冲的波形失真。 读出存储器中的调制信号数据,以输出由数字功率放大器进行功率放大的调制信号。 放大的数字信号被平滑化以作为驱动脉冲输出到致动器。 结果,具有高放大效率的数字功率放大器有效地放大调制信号的功率,从而消除了使用冷却单元的需要。 驱动脉冲输出电路可以安装在喷墨头上,从而缩短致动器驱动脉冲的传输路径,其抑制或防止驱动脉冲的任何波形失真。 以低频率实现调制信号数据DATA的发送。
    • 7. 发明申请
    • HEAD DRIVE DEVICE OF INKJET PRINTER AND INK JET PRINTER
    • 喷墨打印机和喷墨打印机的头驱动装置
    • US20090066739A1
    • 2009-03-12
    • US12161148
    • 2007-01-17
    • Kunio TabataToshiyuki SuzukiOsamu ShinkawaTomoki HatanoAtsushi Oshima
    • Kunio TabataToshiyuki SuzukiOsamu ShinkawaTomoki HatanoAtsushi Oshima
    • B41J29/38
    • B41J2/04596B41J2/04541B41J2/04548B41J2/04568B41J2/04578B41J2/04581B41J2/04588B41J2/04591B41J2/04595H01L41/042
    • A head drive apparatus of an inkjet printer, having: a plurality of nozzles provided to an inkjet head for ejecting liquid drops; actuators provided corresponding to the nozzles; and a drive unit that applies a drive signal to the actuators, wherein the drive unit, comprising: a drive waveform generator that generates a drive waveform signal as a reference of a signal to control drive of the actuators; a modulator that pulse modulates a drive waveform signal generated by the drive waveform generator; a digital power amplifier that amplifies power of a modulated signal subjected to the pulse modulation by the modulator; a low pass filter that smoothes a amplified digital signal subjected to the power amplification by the digital power amplifier and supplying the signal as a drive signal to the actuators; and an inverse filter provided in a subsequent stage of the drive waveform generator that corrects at least the frequency characteristics of the filter comprised of capacitances of the low pass filter and the actuators to a predetermined frequency characteristics, independently of the number of the actuators to drive.
    • 一种喷墨打印机的头驱动装置,具有:多个喷嘴,其设置在用于喷射液滴的喷墨头上; 对应于喷嘴提供的致动器; 以及驱动单元,其向所述致动器施加驱动信号,其中所述驱动单元包括:驱动波形发生器,其产生驱动波形信号作为用于控制所述致动器的驱动的信号的参考; 脉冲调制由所述驱动波形发生器产生的驱动波形信号的调制器; 数字功率放大器,其通过调制器放大经过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放大数字信号进行平滑,并将信号作为驱动信号提供给致动器; 以及设置在驱动波形发生器的后续级中的逆滤波器,其至少将包括低通滤波器和致动器的电容器的滤波器的频率特性校正到预定的频率特性,与要驱动的致动器的数量无关 。
    • 9. 发明授权
    • Liquid jet apparatus and printing apparatus
    • 液体喷射装置和打印装置
    • US08240794B2
    • 2012-08-14
    • US11780357
    • 2007-07-19
    • Atsushi OshimaKunio TabataToshiyuki SuzukiOsamu ShinkawaTomoki Hatano
    • Atsushi OshimaKunio TabataToshiyuki SuzukiOsamu ShinkawaTomoki Hatano
    • B41J29/38
    • B41J29/38
    • 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.
    • 液体喷射装置包括设置在液体喷射头上的多个喷嘴,对应于每个喷嘴设置的致动器,向致动器施加驱动信号的驱动单元,产生提供驱动波形信号的驱动波形信号的驱动波形信号生成单元 用于控制致动器的信号的参考,对由驱动波形信号产生单元产生的驱动波形信号进行脉冲调制的调制器单元,用于对由调制器单元脉冲调制的调制信号进行功率放大的数字功率放大器, 以及分别与致动器相对应地设置的低通滤波器,并且用于向致动器提供由数字功率放大器功率放大的功率放大调制信号作为平滑后的驱动信号。