Photocopying – Contact printing – Light boxes
Patent
1992-05-22
1993-05-11
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355271, G03G 1514
Patent
active
052105776
ABSTRACT:
An imaging device includes a non-rigid member with a charge retentive surface moving along an endless path, an arrangement for creating a latent image on the charge retentive surface, a developer to develop the latent image with toner, a transfer arrangement electrostatically transferring the developed toner image to a copy sheet, and a resonator for enhancing toner release from the charge retentive surface, producing relatively high frequency vibratory energy and having a portion adapted for contact across the non-rigid member, generally transverse to the direction of movement of the non-rigid member. The resonator includes an energy transmitting horn having a platform portion and a horn portion including a set of linearly arranged horn elements, each horn element having a contacting portion for contacting the non-rigid member; a voltage source producing a voltage signal; a plurality of vibratory energy producing devices, each corresponding to a horn element to drive the horn elements to vibrate, each vibratory energy producing device producing a vibration responsive to an applied voltage signal directed to each from the voltage source. The plurality of vibratory energy producing devices includes at least two groups, each group having a vibration response to the applied voltage signal directed thereto distinct from the other, to provide a substantially uniform vibration response to the applied voltage signal across the resonator.
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Xerox Disclosure Journal; "Floating Diaphragm Vacuum Shoe"; Hull et al.; vol. 2, No. 6, Nov./Dec. 1977; pp. 117-118.
Costello Mark
Grimley A. T.
Royer William J.
Xerox Corporation
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