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    • 4. 发明授权
    • Recording head
    • 录音头
    • US06283579B1
    • 2001-09-04
    • US09099782
    • 1998-06-19
    • Koichi HagaHiroaki SatohIchirou AsaiJiro Minabe
    • Koichi HagaHiroaki SatohIchirou AsaiJiro Minabe
    • B41J2135
    • B41J2/04B41J2002/14322
    • A recording head for carrying out printing by jetting ink drops for deposition at predetermined positions on recording media, and allowing minute drops to be jetted without using a nozzle to record high-definition images. The recording head includes an elastic member vibrating in response to the excitation of a vibration generating means vibrating in accordance with a pixel signal, wherein capillary waves are generated on the surface of ink by the vibration of the elastic member to jet the ink for deposition on recording media. The elastic member is of a cantilever construction that bending vibration is made by excitation. Also, the elastic member has a length of about 2&lgr; as the width of a side perpendicular to a vibration direction of bending vibration in the neighborhood of the tip of a free end of a cantilever construction, where &lgr; is given by the following expression: &lgr;={8&pgr;&sgr;/(&rgr;fe2)}⅓×104 (&mgr;m), where &sgr; is an ink surface tension (mN/m), &rgr; is an ink density (g/cm3), and fe is an excitation frequency (Hz).
    • 一种用于通过喷射墨滴进行打印的记录头,用于在记录介质上的预定位置沉积,并且允许在不使用喷嘴的情况下喷射微滴以记录高清晰图像。 记录头包括响应于根据像素信号振动的振动产生装置的激发而振动的弹性构件,其中通过弹性构件的振动在墨表面上产生毛细波,以喷射用于沉积的墨 录音媒体 弹性构件是通过激励进行弯曲振动的悬臂结构。 此外,弹性构件的长度为垂直于悬臂结构的自由端的尖端附近的弯曲振动的振动方向的一侧的宽度的长度,其中通过以下表达式给出lambd:lambd = {8pisigma /(rhofe2)} 1/3×104(mum),其中sigma是油墨表面张力(mN / m),rho是油墨密度(g / cm 3),fe是激发频率(Hz)。