Electrode wire contamination prevention and detection

Details Electrode wire contamination prevention and detection Electrode wire contamination prevention and detection

1990-07-26

1992-07-28

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118652, 355215, 355261, G03G 1506, G03G 2100

Patent

active

051344424

ABSTRACT:
An apparatus in which a developer unit of an electrophotographic printing machine has a plurality of wires which trap contaminants before reaching electrode wires positioned between a donor roller and a photoconductive surface. In addition, a circuit determines when defects and deletions are caused by contaminants spacing the electrode wires from the donor roller.

REFERENCES:
patent: 3865080 (1975-02-01), Hudson
patent: 4025184 (1977-05-01), Mochizuki
patent: 4260243 (1981-04-01), Dolan et al.
patent: 4529295 (1985-07-01), Mayer
patent: 4647186 (1987-03-01), Armstrong et al.
patent: 4868600 (1989-09-01), Hays et al.
patent: 4913348 (1990-04-01), Hays
patent: 4984019 (1991-01-01), Folkins

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