Image forming apparatus with variable rotational speed of develo

Details Image forming apparatus with variable rotational speed of develo Image forming apparatus with variable rotational speed of develo

1985-04-25

1986-05-27

Prescott, A. C.

Photocopying

Including fiber optics

355 3DD, 355 14D, 118657, 430122, G03G 1501, G03G 1508

Patent

active

045912610

ABSTRACT:
An image forming apparatus comprises a rotatable, drum-shaped photosensitive member carrying thereon a latent image responsive to an original image, a first developing roller adapted to supply a first developing agent to the photosensitive member while rotating, thereby developing the latent image, second developing roller adapted to supply the second developing agent to the photosensitive member while rotating, thereby developing the latent image and a first and second motor assembly for rotating the photosensitive member and selectively rotating the first and second developing rollers to move the photosensitive member relatively to the first developing roller at a first relative speed when the first developing roller is rotated and to move the photosensitive member relatively to the second developing roller at a second relative speed different from the first relative speed when the second developing roller is rotated.

REFERENCES:
patent: 3405682 (1968-10-01), King et al.
patent: 3970042 (1976-07-01), Rees
patent: 4111151 (1978-09-01), Ruckdeschel
patent: 4146325 (1979-03-01), Lange
patent: 4189224 (1980-02-01), Sakai
patent: 4232961 (1980-11-01), Masuda
patent: 4264185 (1981-04-01), Ohta
patent: 4308821 (1982-01-01), Matsumoto et al.
patent: 4469433 (1984-09-01), Kurata

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