Developing device for use in image forming apparatus

Details Developing device for use in image forming apparatus Developing device for use in image forming apparatus

1995-11-08

1997-08-19

Grimley, Arthur T.

Electrophotography

Diagnostics

Consumable

399 27, 399111, G03G 1500

Patent

active

056598378

ABSTRACT:
A developing device in an image forming apparatus having a cartridge loading portion for loading a replaceable toner cartridge, a frame including a hollow portion for receiving a developer supplied from the cartridge, a photosensitive drum installed in the hollow portion and having a surface exposed to the exterior of the frame, and a developer roller installed adjacent to the photosensitive drum, the developing device having a cartridge control device installed on the one side of the cartridge loading portion to control the installation and removal of the toner cartridge, in which the cartridge control device includes a cartridge installation and removal device for allowing a user to install or remove the toner cartridge, a counter for counting the number of toner cartridge replacements, and a cartridge removal protector for prohibiting removal of the toner cartridge from the developing device when a predetermined number of toner cartridge replacements is reached so as to prevent contamination resulted from an imbalance between the total amount of the toner supplied and the capacity of a waste toner container.

REFERENCES:
patent: 2845145 (1958-07-01), Lee
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patent: 5268722 (1993-12-01), Ikkatai et al.
patent: 5289243 (1994-02-01), Sakamoto
patent: 5300991 (1994-04-01), Hiraike
patent: 5398098 (1995-03-01), Fukunaga et al.
patent: 5430531 (1995-07-01), Kamiya
patent: 5508795 (1996-04-01), Kikuchi

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