Print head in powder jet image forming apparatus

Details Print head in powder jet image forming apparatus Print head in powder jet image forming apparatus

1995-08-28

1998-03-10

Krishnan, Aditya

Incremental printing of symbolic information

Ink jet

Ejector mechanism

H04H 140

Patent

active

057266948

ABSTRACT:
The present invention relates to a print head in a powder jet image forming apparatus comprising a plurality of first electrodes formed on the surface of an insulating layer on the side of a developer supplying roller and a plurality of second electrodes formed on the surface of the insulating layer on the side of a paper conveying section, a developer through-hole being provided at each of intersections of the first electrodes and the second electrodes. In the present invention, one or a plurality of guard electrodes for drawing a developer from the developer supplying roller and supplying the developer to the first electrodes are provided around the first electrodes on the surface of the insulating layer.

REFERENCES:
patent: 4814886 (1989-03-01), Kuge et al.

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