Developing unit

Details Developing unit Developing unit

2007-02-01

2009-12-22

Tran, Hoan H (Department: 2852)

Electrophotography

Image formation

Development

C399S256000

Reexamination Certificate

active

07636535

ABSTRACT:
A developing unit including: a first agitating and conveying rotor and second agitating and conveying rotor for agitating and conveying toner inside a casing; and a developing roller for supplying the toner to a photoreceptor drum is constructed such that the first agitating and conveying rotor has a rotary shaft arranged approximately parallel to the developing roller and a multiple number of agitating vanes arranged on the rotary shaft with an inclination to the axial direction of the rotary shaft; each agitating element is formed asymmetrically about a normal that passes through the rotational center and adjacent agitating elements are asymmetrical to each other; and an odd number of asymmetrical agitating elements are arranged alternately.

REFERENCES:
patent: 4583842 (1986-04-01), Shimono et al.
patent: 5220382 (1993-06-01), Hediger
patent: 7463852 (2008-12-01), Yoshida et al.
patent: 7-28321 (1995-01-01), None
patent: 8-220887 (1996-08-01), None
patent: 2000-137383 (2000-05-01), None
patent: 2004-37997 (2004-02-01), None

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