One-component developing device

Details One-component developing device One-component developing device

1993-12-22

1995-02-07

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355245, 355269, 355270, 355296, G03G 2100

Patent

active

053879635

ABSTRACT:
An elastic rotation body contacts with the surface of a developer carrier and rotates in the same direction as that of the carrier. A bias voltage for forming an electric field for attracting a developer on the carrier which has passed through a development station is applied to the elastic rotation body. The elastic rotation body is disposed at the edge portion of an opening of a device housing in the downstream of the development station, in such a manner that a part of the surface of the elastic rotation body is exposed to the outside of the device housing, and the clearance between the rotation body and the electrostatic latent image holder is greater than the clearance between the developer carrier and the electrostatic latent image holder. A developer removing member for returning the developer on the elastic rotation body to the interior of the device housing is disposed. The rotation body can prevent the image hysteresis phenomenon from occurring and reduce the toner scattering to a very small degree, without deteriorating the charging property of the developer.

REFERENCES:
patent: 5223668 (1993-06-01), Takaya et al.

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