Image forming apparatus with easily removable developing units

Details Image forming apparatus with easily removable developing units Image forming apparatus with easily removable developing units

1988-09-12

1990-09-11

Braun, Fred L.

Photocopying

Contact printing

Light boxes

G03G 1506

Patent

active

049566733

ABSTRACT:
An image forming apparatus is provided with a developing device for developing a latent image formed on the surface of a photosensitive drum. The developing device includes a first developing unit for developing the latent image by use of a first colon developing agent and a second developing unit for developing the latent image by use of a second colon developing agent. The first and second developing units are selectively driven and devices for inserting/removing the first and second development units are also provided. The inserting/removing device includes a handle on the developing unit having first and second hooks which are rotated by the handle to engage pins on the housing of the image-forming apparatus to lock the developing unit in operative relationship with the photosensitive drum.

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patent: 4619514 (1986-10-01), Ide

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