Image forming apparatus

Details Image forming apparatus Image forming apparatus

1990-01-24

1991-07-16

Miller, Jr., George H.

Recorders

Electric recording

Electrochemical

355326, G03G 1501

Patent

active

050328522

ABSTRACT:
The present invention provides an image forming apparatus comprising a first developing device for developing a first latent image to form a first toner image, a second developing device for acting on an image bearing member on which the first toner is formed to develop a second latent image thereby creating a second toner image, and an antioxidant material layer provided on a surface of a developing sleeve of the second developing device.

REFERENCES:
patent: 4292387 (1990-01-01), Kanbe et al.
patent: 4416533 (1983-11-01), Tokunaga et al.
patent: 4814797 (1989-03-01), Haneda et al.
patent: 4841332 (1989-06-01), Haneda et al.
patent: 4937630 (1990-06-01), Yoshikawa et al.

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