Aperture electrode with overlying charge member

Details Aperture electrode with overlying charge member Aperture electrode with overlying charge member

1994-03-18

1996-06-04

Pendegrass, Joan H.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347151, B41J 2385, B41J 2415

Patent

active

055237770

ABSTRACT:
An insulating layer of an aperture electrode provided in a recording apparatus is formed of polyimide which is liable to be negatively electrified through frictional contact with toner when the toner is negatively chargeable. Further, a charge member which can be charged in the same polarity as the toner is placed on the aperture electrode so as to surround the opening portions of the aperture electrode. With this structure, a recording operation of high image quality can be performed using a low voltage while preventing the deposition of the toner at the control electrodes of the aperture electrode so that the recording operation can be stably performed at all times.

REFERENCES:
patent: 3689935 (1972-09-01), Pressman et al.
patent: 4912489 (1990-03-01), Schmidlin
patent: 5036341 (1991-07-01), Larsson
patent: 5200769 (1993-04-01), Takemura et al.

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