DRIVING APPARATUS AND A RECORDING AND/OR REPRODUCING APPARATUS USING THE SAME

    公开(公告)号:CA2060674A1

    公开(公告)日:1992-08-09

    申请号:CA2060674

    申请日:1992-02-05

    Applicant: CANON KK

    Abstract: A driving apparatus for driving an object comprises a pair of piezoelectric elements, one of them being arranged on the one side of the object while the other of them on the other side of the object, and the respective electrode arrangement directions of the pair of piezoelectric elements being substantailly identical to each other, and a control circuit which applies a predetermined voltage across the outer electrodes of the pair of piezoelectric elements respectively, gives an equipotential to the inner electrodes thereof, and causes the pair of piezoelectric elements to drive the object by varying the value of the potential given to the inner electrodes. Hence, the increased amount of a voltage applied to one piezoelectric element is exactly identical to the decreased amount for the other so as to make the extended and contracted amounts of the piezoelectric elements on both sides of the object the same. Consequently, no useless stress is given to the piezoelectric elements for the prevention of the deterioration of the elements to implement a precise fine driving over a long period.

    18.
    发明专利
    未知

    公开(公告)号:DE69824067D1

    公开(公告)日:2004-07-01

    申请号:DE69824067

    申请日:1998-03-20

    Applicant: CANON KK

    Abstract: An image-forming apparatus comprises in a vacuum envelope an electron source including a plurality of electron-emitting devices and an image-forming member including a fluorescent layer and a high voltage anode layer disposed vis-a-vis the electron source. The envelope may preferably have a low resistance electroconductive member electrically connected to the ground by way of a low impedance ground connection line for by-passing large electric current which may occur upon electric discharge between the anode layer and the electron source and can possibly destroy the electron-emitting devices if flowing thereinto by way of the driving wires of the devices. The high voltage anode layer and/or the low resistance electroconductive. member is drawn out from the inside of the envelope to a recess formed in the outer surface of the envelope and is electrically connected to external wiring in the recess.

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