Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2006-12-19
2006-12-19
Chen, Sophia S. (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S046000, C399S061000, C399S257000
Reexamination Certificate
active
07151901
ABSTRACT:
An image forming apparatus including a latent carrier and a charging device. The charging device is configured to charge a surface of the latent carrier. An exposure device is configured to expose a surface of the latent carrier for forming a latent image thereon. A transfer device is provided to transfer a developed toner image on the latent carrier to a recording medium. The image forming apparatus includes a developing device having a pooling portion configured to pool a two-component developer and an agitating device configured to agitate developer in the pool portion. A developer carrier replenishes developer to the latent carrier. A first measurement device and a second measurement device are configured to measure developer characteristics wherein the first and second measurement devices compare their respective outputs to measure a deterioration rate of the developer.
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U.S. Appl. No. 10/986,781, filed Nov. 15, 2004, Matsuura et al.
Chen Sophia S.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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