技術摘要: |
The present invention relates to a highly-efficient ultrasonic wave ink-jet head and a fabrication method for the same. A piezoelectric transducer and a Fresnel Lenses are provided on a supporting layer. A chamber structure is fabricated on the supporting layer by lithography etching, and further secured with an ink-storing groove to form an ink-jet head. The design of this invention makes a total reflection generated arising from deviation of acoustic impedance of ultrasonic wave at different media. The sound energy of the ultrasonic wave can be effectively reused. Moreover , the phase of the reflected ultrasonic wave is consistent of that of the direct ultrasonic wave generated by the piezoelectric transducer. This forms a highly-efficient ultrasonic wave ink-jet head.
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解決的問題或達成的功效: |
減少超音波傳遞間的能量消耗,並將背襯層製作於玻璃/矽支撐層上,透過結構設計使背襯層讓超音波產生全反射,並與另一方向之超音波產生建設性干涉疊合,當該壓電換能元件產生超音波機械能時,可以有最大平面聲波使用效率,並聚焦以驅動噴墨。
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應用領域: |
關於一種高效率超音波噴墨頭設計及其製造方法
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適用產品: |
工業霧化器
噴墨印表機
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IPC: |
B41J2/14008
B41J2/16
B41J2/1626
B41J2/1631
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Claim 1: |
.一種高效率超音波噴墨頭,係包含:一支撐層;一壓電換能元件,係設於支撐層上,依序包括下電極層、壓電材料層及上電極層;一聚焦透鏡,係設於上電極層上,且為平面透鏡結構;一聲阻抗匹配層,係設於聚焦透鏡上;一儲墨槽,與聲阻抗匹配層鍵合。
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