Image forming apparatus, developing unit and storage medium

Details Image forming apparatus, developing unit and storage medium Image forming apparatus, developing unit and storage medium

2005-10-18

2005-10-18

Grimley, Arthur T. (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S029000

Reexamination Certificate

active

06957023

ABSTRACT:
An image forming apparatus including a first unit having a developer container holding developer containing toner and carrier, and a developer holder to hold and transfer the developer held in the developer container, a second unit to supply toner to the developer container, and a processing unit to determine the time of replacement of the first unit, from information on a toner supply amount from the second unit or information on an operation amount of the developer holder.

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