Electrophotography – Diagnostics – Unit or part identification
Reexamination Certificate
2007-11-27
2007-11-27
Chen, Sophia S. (Department: 2852)
Electrophotography
Diagnostics
Unit or part identification
C399S223000
Reexamination Certificate
active
11231893
ABSTRACT:
An image forming apparatus includes an image forming apparatus body, and developer tanks to be removably fitted to the body. The developer tanks each have a charging current inflow terminal which allows a charging current to flow in therefrom, and a capacitor which allows the charging current flowing in from the charging current inflow terminal to pass therethrough. The body includes a charging current outflow terminal to be connected to the charging current inflow terminal when an associated one of the developer tanks is fitted to the body, and an identifier section configured to pass the charging current to the charging current outflow terminal when the associated developer tank is fitted to the body and identify the developer tank based on a change in waveform that occurs during a transient phenomenon period during which the charging current passes through the capacitor of the developer tank.
REFERENCES:
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patent: 6385407 (2002-05-01), Inose
patent: 6490422 (2002-12-01), Harumoto
patent: 61-140961 (1986-06-01), None
patent: 05-254147 (1993-10-01), None
patent: 2002-365983 (2002-12-01), None
patent: 2003-005588 (2003-01-01), None
patent: 2003-237101 (2003-08-01), None
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