Developing device using one-component type developer

Details Developing device using one-component type developer Developing device using one-component type developer

1995-05-18

1997-01-14

Brase, Sandra L.

Electrophotography

Image formation

Development

399286, G03G 1508

Patent

active

055941982

ABSTRACT:
A developing device is used to develop an electrostatic latent image with a one-component type developer, the latent image being formed on a photosensitive body. The device has a developing roller made of a conductive rubber, and a conductive sponge roller engaged with the developing roller to feed the developer to the developing roller. The rollers are rotated in the same direction, and the developer fed to a nip between the rollers is subjected to triboelectrification by the rollers, whereby the developer is electrically charged. The charged developer is electrostatically adhered to the surface of the developing roller due to an electrostatic image force acting therebetween. The sponge roller has a friction plate associated therewith, for effectively and additionally charging the developer. Also, the developing roller has a developer-removing plate associated therewith, for removing residual developer, not used for development of latent images, from the developing roller.

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patent: 5166472 (1992-11-01), Maeda et al.
patent: 5177323 (1993-01-01), Kohyama
patent: 5317370 (1994-05-01), Kohyama et al.
patent: 5333040 (1994-07-01), Imamiya

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