Image forming apparatus for determining completion of a...

Details Image forming apparatus for determining completion of a... Image forming apparatus for determining completion of a...

2007-10-09

2007-10-09

Tran, Hoan (Department: 2852)

Electrophotography

Diagnostics

Consumable

C399S029000, C399S049000

Reexamination Certificate

active

11061627

ABSTRACT:
An image forming apparatus of the present invention includes a toner content controller configured to set the target value of a toner content sensor for determining, after a developing unit has been driven for a preselected period of time since the detection of the replacement of a toner cartridge, that a toner-end recovery operation has been completed. Subsequently, every time a preselected toner replenishing cycle is executed, the toner content controller determines whether or not the output voltage Vt of the toner content sensor has decreased below Vt10-0.1 V and determines, if the answer of this decision is positive, that a toner-end recovery operation has completed.

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