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    Lead-free piezo printhead using thinned bulk material
    2.
    发明授权
    Lead-free piezo printhead using thinned bulk material 有权

    公开(公告)号：US10421277B2

    公开(公告)日：2019-09-24

    申请号：US16375951

    申请日：2019-04-05

    Applicant: Xerox Corporation ,  Brown University

    Inventor： Peter J. Nystrom ,  Gary D. Redding ,  Angus Ian Kingon ,  Seunghyun Kim ,  Nicholas Mostovych

    IPC: B41J2/16 ,  B41J2/14 ,  C04B35/453 ,  C04B35/475

    Abstract: An apparatus for a lead-free piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a diaphragm, a plurality of piezoelectric actuators comprising a lead-free piezoelectric material, at least one nozzle, at least one ink chamber, a top electrode, and a drive circuit. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment, a lead-free piezoelectric printhead operated at smaller thicknesses and significantly higher electric fields is disclosed, along with methods of making such printheads.

    Integrated piezo printhead
    3.
    发明授权
    Integrated piezo printhead 有权

    公开(公告)号：US09738070B1

    公开(公告)日：2017-08-22

    申请号：US15141229

    申请日：2016-04-28

    Applicant: Xerox Corporation

    Inventor： Peter J. Nystrom ,  Angus Ian Kingon ,  Andrew W. Hays ,  Seunghyun Kim

    IPC: B41J2/045 ,  B41J2/14

    CPC classification number: B41J2/14233 ,  B41J2/161 ,  B41J2/1623 ,  B41J2/1626 ,  B41J2/1628 ,  B41J2/1629 ,  B41J2/1631 ,  B41J2/1632 ,  B41J2/1634 ,  B41J2/1645 ,  H01L41/187 ,  H01L41/314 ,  H01L41/318

    Abstract: An apparatus for a piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a plurality of ink ejectors with a nozzle, an ink chamber, at least one body chamber, at least one diaphragm material, and a top electrode. The diaphragm material consists of a foil with built up piezoelectric material. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment disclosed, a thin-film piezoelectric printhead uses existing low-cost adhesive based jet stack fabrication processed with polymers and metal foil layers and avoids the cost and complexity of a Micro-electrical-mechanical (MEMS) based fabrication system. According to another exemplary embodiment of this disclosure, provided is a thick hybrid film piezoelectric printhead.

    Lead-free piezo printhead using thinned bulk material
    5.
    发明授权
    Lead-free piezo printhead using thinned bulk material 有权

    公开(公告)号：US10252525B2

    公开(公告)日：2019-04-09

    申请号：US15611179

    申请日：2017-06-01

    Applicant: Xerox Corporation ,  Brown University

    Inventor： Peter J. Nystrom ,  Gary D. Redding ,  Angus Ian Kingon ,  Seunghyun Kim ,  Nicholas Mostovych

    IPC: B41J2/14 ,  B41J2/16 ,  C04B35/475 ,  C04B35/453

    Abstract: An apparatus for a lead-free piezoelectric ink-jet printhead is disclosed. Piezoelectric printheads, while more expensive are favored because they use a wider variety of inks. The piezoelectric printhead includes a diaphragm, a plurality of piezoelectric actuators comprising a lead-free piezoelectric material, at least one nozzle, at least one ink chamber, a top electrode, and a drive circuit. The deflection of the diaphragm on the body chamber contributes to a pressure pulse that is used to eject a drop of liquid from the nozzle. According to an exemplary embodiment, a lead-free piezoelectric printhead operated at smaller thicknesses and significantly higher electric fields is disclosed, along with methods of making such printheads.

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