Developing apparatus having a toner supporting roller with an in

Details Developing apparatus having a toner supporting roller with an in Developing apparatus having a toner supporting roller with an in

1995-12-19

1997-05-06

Grimley, Arthur T.

Electrophotography

Image formation

Development

G03G 1508

Patent

active

056276303

ABSTRACT:
A developing apparatus includes a toner supporting member for attaching toner to an image supporting member on which an electrostatic latent image is formed so as to develop the electrostatic latent image with the toner supporting member and the image supporting member contacting each other. A toner restricting member forms a toner layer on the toner supporting member uniformly. Further, the toner supporting member has an elastic inner layer and a surface layer on which a magnetic portion is formed, and non-magnetic portions are formed on both end portions of said surface layer. Moreover, a length of the surface layer may be equal to or larger than a length of the inner layer in a longitudinal direction.

REFERENCES:
patent: 5149914 (1992-09-01), Koga et al.
patent: 5172166 (1992-12-01), Funayama
patent: 5191170 (1993-03-01), Yoshida et al.

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