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    • 5. 发明授权
    • Ink jet printhead having a low cross talk ink channel structure
    • 具有低串扰油墨通道结构的喷墨打印头
    • US06079819A
    • 2000-06-27
    • US004640
    • 1998-01-08
    • Narayan V. DeshpandeJohn R. AndrewsDale R. Ims
    • Narayan V. DeshpandeJohn R. AndrewsDale R. Ims
    • B41J2/14B41J2/16B41J2/05
    • B41J2/14129B41J2/1404B41J2/1604B41J2/1623B41J2/1628B41J2/1629B41J2/1631B41J2/1632B41J2/1635B41J2/1642
    • An ink jet printhead is disclosed which has a heater plate containing the heating elements and driving circuitry means monolithographically formed on one surface thereof and the ink flow directing channel structure is formed on the heater plate using a layer of patternable polymeric material which, in one embodiment, is exposed using a mask to define the channel pattern then developed and cured. After curing, the patterned channel structure is polished to provide a smooth coplanar surface and a cover plate with an aperture therein is aligned and bonded to the channel structure to complete the printhead. The aperture serves as both ink inlet and a portion of the ink reservoir. The channels are open at one end and serve as the droplet ejecting nozzles, while the other ends are closed and extend beneath the cover plate aperture to provide a baffled portion of the ink reservoir and prevent cross-talk between the ink channels. In another embodiment, the channels ends opposite the nozzles open into a common recess with the channels walls extending therein to function as baffles and prevent cross-talk.
    • 公开了一种喷墨打印头,其具有包含加热元件的加热器板和在其一个表面上以光学方式形成的驱动电路装置,并且使用可图案化的聚合物材料层在加热器板上形成墨流动引导通道结构,在一个实施例中 ,使用掩模曝光以定义通道图案然后显影和固化。 在固化之后,对图案化的通道结构进行抛光以提供平滑的共面表面,并且其中具有孔的盖板对准并结合到通道结构以完成打印头。 该孔用作墨水入口和墨水储存器的一部分。 通道在一端开口并用作液滴喷嘴,而另一端封闭并延伸到盖板孔下方,以提供墨水容器的挡板部分并防止油墨通道之间的串扰。 在另一个实施例中,通道与喷嘴相对地开口,开口成共同的凹槽,通道壁延伸到其中,用作挡板并防止串扰。