Image forming apparatus including toner supply controlling unit

Details Image forming apparatus including toner supply controlling unit Image forming apparatus including toner supply controlling unit

2006-08-11

2009-10-13

Royer, William J (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S030000, C399S043000, C399S044000

Reexamination Certificate

active

07603046

ABSTRACT:
An image forming apparatus includes a developer container that holds a two-component developer, a toner concentration detector that detects toner concentration in the developer, a toner supplying unit configured to supply new toner to a developing unit, a toner supply controlling unit that compares an output of the toner concentration detector and a toner concentration reference value Vtref to control the toner supplying unit. The image forming apparatus detects an output of the toner concentration sensor with respect to a plurality of linear velocities, and calculates linear velocity shift amounts ΔVt1=(Vt1−Vt0) and ΔVt2=(Vt2−Vt0) to be reflected in a toner supply control parameter.

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