Two-component delivery system to transfer a mixture of a...

Details Two-component delivery system to transfer a mixture of a... Two-component delivery system to transfer a mixture of a...

2006-04-04

2009-06-09

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

C399S256000, C399S259000

Reexamination Certificate

active

07546067

ABSTRACT:
A two-component developing unit having an OPC, a toner supply part supplying toner, and a carrier circulating part including a carrier and circulating the carrier to mix the toner with the carrier and deliver the toner onto the OPC, includes a housing with a hollow body connecting the toner supply part and the carrier circulating part, a rotating shaft inside the housing extending from the toner supply part to the carrier circulating part; a right delivering wing discontinuously formed on the rotating shaft with gaps and which delivers the toner and the carrier from the toner supply part to the carrier circulating part; and a reverse delivering wing in the gaps of the right delivering wing which delivers the toner and the carrier in a reverse direction of the right delivering wing.

REFERENCES:
patent: 6377767 (2002-04-01), Fukushima et al.
patent: 6456809 (2002-09-01), Sekiguchi
patent: 63-125963 (1988-05-01), None
patent: 02-042467 (1990-02-01), None
patent: 07-253711 (1995-10-01), None
patent: 2001-209240 (2001-08-01), None
patent: 2003-107859 (2003-04-01), None
patent: 2001-60335 (2001-07-01), None
Notice of Official Action issued May 22, 2006 by the Korean Intellectual Property Office re: Korean Application No. 2005-27942 (3 pp).

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