2.
    发明专利
    未知

    公开(公告)号:DE2554499A1

    公开(公告)日:1976-07-01

    申请号:DE2554499

    申请日:1975-12-04

    Applicant: IBM

    Abstract: 1483435 Ink drop producing INTERNATIONAL BUSINESS MACHINES CORP 5 Sept 1975 [18 Dec 1974] 36568/75 Heading B6P An apparatus for causing perturbations in a liquid stream to produce successive drops comprises a nozzle unit 10 having a chamber, to which liquid is supplied under pressure, the chamber having a wall 12 with an orifice 13 which is repetitively altered in cross-section. A piezoelectric crystal transducer 15, connected to a signal generator 18, acts on the orifice 13. Several nozzles may be linearly arranged to be supported between two planar transducers.

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