Developing apparatus having developer layer regulation means

Details Developing apparatus having developer layer regulation means Developing apparatus having developer layer regulation means

1988-10-25

1992-01-28

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118657, 355253, G03G 1509

Patent

active

050847333

ABSTRACT:
A developing apparatus including a developer carrying member for carrying a developer, a magnet disposed in the developer carrying member, and an elastic regulating member contacting the developer carrying member to regulate a thickness of a layer of the developer formed on the developer carrying member. The developer carrying member has a roughened surface over a width thereof larger than a width of the portion of the elastic regulating member contacting the developer carrying member while the magnet forms a magnetic field in a marginal region of the roughened surface of the developer carrying member not contacting the elastic regulating member to remove magnetic developer.

REFERENCES:
patent: 3915121 (1975-10-01), Wilcox
patent: 4213617 (1980-07-01), Salger
patent: 4227797 (1980-10-01), Tsunoi
patent: 4387664 (1983-06-01), Hosono et al.
patent: 4579082 (1986-04-01), Murasawa et al.
patent: 4596455 (1986-06-01), Kohyama et al.
patent: 4597661 (1986-07-01), Yamashita
patent: 4656965 (1987-04-01), Hosoya et al.
patent: 4662311 (1987-05-01), Shoji et al.
patent: 4806992 (1989-02-01), Yasuda et al.
patent: 4819027 (1989-04-01), Murasaki et al.
Japanese Abstract, 62-70884, vol. 11, No. 270, (P-611) [2717] Sep. 3, 1987.

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