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    3.
    发明专利
    未知

    公开(公告)号：DE2262107A1

    公开(公告)日：1973-06-28

    申请号：DE2262107

    申请日：1972-12-19

    Applicant: IBM

    Inventor： HILDENBRAND WALTER WILLIAM ,  LEVINE WILBUR JACK ,  MANNING STANLEY ARTHUR ,  STROMS KARL FRIEDRICH

    IPC: B41J2/045 ,  B41J2/055 ,  B41J2/175 ,  H04N1/034 ,  B41J3/04

    Abstract: A collapsible ink bag supplies ink at constant pressure through a manifold containing an air bubble trap, capable of venting, which manifold is connected in common to plural lines to a multiple orifice - multiple transducer fluid wave printing head of a recorder. Constant static pressure in the ink supply is provided to avoid inadvertent ejection of ink through orifices of the nozzles. The manifold contains an air bubble and the manifold inlet line has a sufficiently low resistance to flow. Its source of ink supply is free to expand and contract, and the hydraulic resistance to fluid flow in the lines to the head is sufficiently high to eliminate cross talk of waves between separate orifices. Alternatively, a built in reservoir in the head has a single low resistance connection to the source of ink supply and high resistance lines connect it to the orifices.

    5.
    发明专利
    未知

    公开(公告)号：DE2852667A1

    公开(公告)日：1979-06-13

    申请号：DE2852667

    申请日：1978-12-06

    Applicant: IBM

    Inventor： BOGARDUS E HAL ,  HILDENBRAND WALTER WILLIAM ,  LEVANONI MENACHEM

    IPC: B41J2/075 ,  B41J2/12 ,  B41J3/04

    Abstract: An electrostatic lens is disposed between a charge electrode and deflection plates to electrostatically focus each of the droplets on a recording surface at a position in alignment with the nozzle supplying the stream. The lens preferably comprises three electrodes with each of the outer electrodes having the same potential, which is substantially equal to the kinetic energy per unit charge of each of the charged droplets and of opposite polarity to the charge on the droplets, and the third electrode preferably being grounded. Each of the electrodes has a circular aperture through which the charged droplets pass with the electrodes being spaced from each other in the direction of the stream a distance preferably no greater than the diameter of the aperture. If desired, the electrode, which is furthest from the nozzle, can be omitted although this will produce some deceleration of the droplets.

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