Developing apparatus

Details Developing apparatus Developing apparatus

1987-09-22

1989-05-23

Moses, R. L.

Photocopying

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118651, 355259, G03G 1506

Patent

active

048335002

ABSTRACT:
A developing apparatus in a transfer-type electrophotographic system having a photosensitive body, wherein the developing apparatus includes a developing roller spaced a small distance from the photosensitive body for supplying a developing solution to the photosensitive body to develop a latent image thereon and to induce a potential on the developing roller through the developing solution from the photosensitive body. A cleaning member is held against the developing roller. In one embodiment, the potential of the developing roller is limited to a level intermediate between predetermined upper and lower limits, an a developing roller is switched into an electrically floating condition except during development of an image. In another embodiment, a developing bias potential is produced responsive to the potential of the developing roller. The bias potential is then applied to the developing roller which is used as a developing electrode.

REFERENCES:
patent: 4003650 (1977-01-01), Courtney et al.
patent: 4194828 (1980-03-01), Holz et al.
patent: 4277549 (1981-07-01), Tatsumi et al.
patent: 4306804 (1981-12-01), Sakamoto et al.
patent: 4326795 (1982-04-01), Tajima et al.
patent: 4395112 (1983-07-01), Miyakawa et al.

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