Toner conveying device, developing device, and image forming...

Details Toner conveying device, developing device, and image forming... Toner conveying device, developing device, and image forming...

2006-03-24

2009-06-30

Gray, David M (Department: 2852)

Electrophotography

Image formation

Development

Reexamination Certificate

active

07555247

ABSTRACT:
A developing device includes a container for containing toner, a rotatable shaft provided in the container, a spiral shaped blade formed on an outer circumference of the shaft, and a first spiral member for conveying the toner in the longitudinal direction of the shaft by means of rotation. In addition, a toner removing member is provided for removing the toner attached to the first spiral member. Then, by rotation of the first spiral member, the toner removing member is moved in the longitudinal direction of the shaft and the direction that is orthogonal to the longitudinal direction of the shaft so as to be in contact with the surface of the first spiral member. Accordingly, it is possible to adequately scrape the toner off the spiral shaped blade and the shaft, thereby effectively prevent an aggregation of toner from occurring.

REFERENCES:
patent: 5734952 (1998-03-01), Murakami et al.
patent: 6055405 (2000-04-01), Knott et al.
patent: 6832067 (2004-12-01), Kubo
patent: 55161738 (1980-12-01), None
patent: 04036785 (1992-02-01), None
patent: 05224562 (1993-09-01), None
patent: 2001-42733 (2004-02-01), None
patent: 2004/177754 (2004-06-01), None
patent: 2006126412 (2006-05-01), None

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