Invention Grant
US08132894B2 Method and inkjet printing apparatus ejecting ink in deflected fashion 失效
方法和喷墨打印设备以偏转的方式喷射墨水

Method and inkjet printing apparatus ejecting ink in deflected fashion
Abstract:
A method and an inkjet printing apparatus for ejecting ink in a deflected manner are provided. The inkjet printing apparatus includes an inkjet printhead having a passage plate, an electrostatic-force-application unit, and a heating unit. The passage plate includes ink chambers that hold ink and nozzles that eject the ink from the ink chambers as ink droplets. The electrostatic-force-application unit applies an electrostatic force. The heating unit heats up a portion of the ink inside the nozzles. The heating unit can include heaters disposed around each nozzles or a laser diode disposed outside the inkjet printhead. The electrostatic force forms a meniscus at the surface of the ink inside the nozzle. When a portion of the ink inside the nozzle is heated by the heating unit, the shape of the meniscus is changed and the direction in which the ink droplets are ejected through the nozzles is deflected.
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