Toner conveyance unit and image forming apparatus

Details Toner conveyance unit and image forming apparatus Toner conveyance unit and image forming apparatus

2008-08-27

2010-12-28

Gray, David M (Department: 2852)

Electrophotography

Having particular structure

Modular or displaceable

C399S113000

Reexamination Certificate

active

07860432

ABSTRACT:
A toner conveyance unit is provided that can reliably prevent a toner from leaking and scattering. And an image forming apparatus is also provided having the toner conveyance unit. When a circular arc-shaped shutter member and a rotary shutter member are closed, a first conveyance part and a second conveyance part are adapted to separate from each other. When the circular arc-shaped shutter member and the rotary shutter member are open, the circular arc-shaped shutter member and the rotary shutter member rotate integrally so as to be enclosed in the tubular cylinder part, and to move a through hole to a position such as to constitute a portion of a second toner conveyance path, whereby the first conveyance part and the second conveyance part are adapted to be connected to each other so that a first toner conveyance path and the second toner conveyance path communicate with each other.

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patent: 7747198 (2010-06-01), Nakagami
patent: 2009/0035012 (2009-02-01), Horikawa
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patent: 2007-025599 (2007-02-01), None

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