Image forming device with toner charge increasing structure

Details Image forming device with toner charge increasing structure Image forming device with toner charge increasing structure

1998-07-31

2000-10-03

Brase, Sandra

Electrophotography

Image formation

Development

430101, G03G 1508

Patent

active

061284580

ABSTRACT:
A printer includes a developing roller and a positively charged photosensitive drum. The printer performs impression development by pressing positively charged toner at a nip portion between the photosensitive drum and the developing roller. A developing agent is formed from toner and a charge controlling agent so that a charge amount Q1 of toner on the developing roller before the toner passes through the nip portion is less than the charge amount of toner after the toner passes through the nip portion.

REFERENCES:
patent: 5170213 (1992-12-01), Yamaguchi et al.
patent: 5473417 (1995-12-01), Hirano
patent: 5585895 (1996-12-01), Yashiro et al.
patent: 5716748 (1998-02-01), Hasegawa et al.
patent: 5783347 (1998-07-01), Ikami
patent: 5867755 (1999-02-01), Sato
patent: 5878313 (1999-03-01), Takagi et al.
Arthur S. Diamond, Handbook of Imaging Materials, Marcel Dekker, Inc., New York, 1991, pp. 163-170.

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