Material state management via automatic toner purge

Electrophotography – Image formation – Development

Reexamination Certificate

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C399S027000, C399S029000

Reexamination Certificate

active

07079794

ABSTRACT:
A method for operating a printing machine to maintain developer material within in a predefined state by monitoring the state of materials in a developer and automatically scheduling corrective action before print quality becomes significantly impacted. The corrective action can include forcing an increase in toner usage by periodically generating and developing images having high toner density.

REFERENCES:
patent: 5512981 (1996-04-01), Hirsch
patent: 5724627 (1998-03-01), Okuno et al.
patent: 6047142 (2000-04-01), Donaldson
patent: 6167213 (2000-12-01), Buranicz et al.
patent: 6766121 (2004-07-01), Nonaka et al.
patent: 2003/0228159 (2003-12-01), Tungate et al.

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