Image forming apparatus having plural developing units and a dev

Details Image forming apparatus having plural developing units and a dev Image forming apparatus having plural developing units and a dev

1988-06-07

1990-09-18

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355326, G03G 1506

Patent

active

049581929

ABSTRACT:
An image forming apparatus is provided and includes first and second developing units for developing a latent image which is formed on a photoconductor provided with the image forming apparatus. The control panel provides an arrangement for selecting either one of the first and second developing units for operation in the image forming apparatus. Additionally, the selection arrangement is provided so as to select the first developing unit if the developers, utilized in the first and second developing units, are of the same kind. If the developers of the first and second developing units are different from one another, the selection arrangement permits the selection of the second developing unit.

REFERENCES:
patent: 3960445 (1976-06-01), Drawe
patent: 4222660 (1980-09-01), Furuichi et al.
patent: 4416533 (1983-11-01), Tokunaga et al.
patent: 4579443 (1986-04-01), Abuyama et al.
patent: 4619514 (1986-10-01), Ide
patent: 4720730 (1988-01-01), Ito

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