Developer amount detecting apparatus

Details Developer amount detecting apparatus Developer amount detecting apparatus

1999-02-01

2000-09-19

Royer, William

Electrophotography

Diagnostics

Consumable

118694, 399 64, G03G 1508

Patent

active

061224596

ABSTRACT:
A developer amount detecting apparatus includes a light emitting device, a light receiving device, threshold value setting device for setting a threshold value on the basis of an intensity of the light received by the light receiving device, and a detector for detecting an amount of a developer within the developer within the developer container on the basis of the threshold value and the intensity of the light received by the light receiving device.

REFERENCES:
patent: 5398106 (1995-03-01), Eguchi
patent: 5587770 (1996-12-01), Jo et al.
patent: 5621221 (1997-04-01), Shinohara et al.

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