Removable developing unit for an electrostatic recording apparat

Details Removable developing unit for an electrostatic recording apparat Removable developing unit for an electrostatic recording apparat

1984-09-24

1986-08-26

Prescott, A. C.

Photocopying

Including fiber optics

355 3R, 355 14D, G03G 1508

Patent

active

046079394

ABSTRACT:
A removable developing unit of an electrostatic recording apparatus, particularly a multi-color copying apparatus, has a casing with an aperture, at one side to allow contact of a developing sleeve with a photoconductive member when the developing unit is mounted in the copying apparatus. A cover and an automatic closing mechanism is provided so that the aperture is covered when the developing unit is removed from the copying apparatus. The casing includes a toner hopper to which a replaceable toner cartridge is attached. The correct color of replacement toner for the developing unit is ensured by removable tabs or openings on the toner hopper which matches those of the correct color toner cartridge.

REFERENCES:
patent: 4364656 (1982-12-01), Yanagawa
patent: 4435065 (1984-03-01), Wada
patent: 4478512 (1984-10-01), Zoltner
patent: 4491161 (1985-01-01), Tamura et al.

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