Electrophotography – Diagnostics – Unit or part identification
Patent
1997-11-20
1999-12-28
Brase, Sandra
Electrophotography
Diagnostics
Unit or part identification
235461, 399 27, 399119, G03G 1508
Patent
active
060092858
ABSTRACT:
Method is disclosed for determining characteristics of a toner cartridge. One aspect is directed to determining the characteristics associated with a quantity of toner in the cartridge, and thus, the method includes the steps directed to determining a home position of an encoded device relative to a code reader, determining a delay in rotational movement of the encoded device with respect to a rotational movement of a drive mechanism as an agitator moves through the toner, and translating the delay into an amount of toner remaining in the cartridge. Another aspect is directed to determining preselected cartridge characteristics from the encoded device, and thus, the method includes steps directed to rotating the encoded device, reading a coding of the encoded device, and decoding the coding to determine the preselected cartridge characteristic information represented by the coding. The method steps directed to these aspects of the method may be performed separately or in aggregate.
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Barry Raymond Jay
Curry Steven Alan
Jones Christopher Dane
Newman Benjamin Keith
Ream Gregory Lawrence
Brady John A.
Brase Sandra
Grainger Quana
Lexmark International Inc.
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