Developing device

Electrophotography – Diagnostics – Consumable

Reexamination Certificate

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C399S063000, C399S258000

Reexamination Certificate

active

07356268

ABSTRACT:
A controller determines the degree of acuteness of the resonant oscillation of a piezoelectric oscillator, based on the developer's fluidity detection data detected by the piezoelectric oscillator. The toner density output data detected by a toner density sensor is modified to a correct value, based on the degree of acuteness, and a supply roller is controlled based on this corrected value so as to implement the necessary toner supply.

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patent: 2004/0151514 (2004-08-01), Shuji
patent: 2005/0214047 (2005-09-01), Tohata
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patent: 06-083197 (1994-03-01), None
patent: 10-78696 (1998-03-01), None
patent: 2004-287388 (2004-10-01), None
patent: 2005-148368 (2005-06-01), None

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