Developing apparatus and image forming apparatus with toner...

Details Developing apparatus and image forming apparatus with toner... Developing apparatus and image forming apparatus with toner...

2006-09-12

2008-10-21

Chen, Sophia S (Department: 2852)

Electrophotography

Image formation

Development

C399S119000, C399S260000

Reexamination Certificate

active

07440717

ABSTRACT:
In the developing apparatus including a developing bath and a toner transport pipe for supplying toner to the developing bath, a toner supply portion opening/closing mechanism is provided, that includes a shutter member for opening and closing a toner supply port of the toner transport pipe that is contained in a base portion of the toner transport pipe, a shaft for moving the shutter member back and forth in a longitudinal direction of the developing bath, a second spring member provided such that the shaft is inserted therein, a first spring member for supporting the shaft detachably to the shutter member through its extension and contraction, and a lever member for extending and contracting the first spring member through its releasing and closing.

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