Developer recovering device for electrostatic image reproducing

Details Developer recovering device for electrostatic image reproducing Developer recovering device for electrostatic image reproducing

1981-12-02

1983-09-13

Prescott, A. C.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 3DD, 355 3BE, 355 14D, 118658, G03G 1509

Patent

active

044038526

ABSTRACT:
An electrostatic image reproducing system includes a developing unit, a rotatable photosensitive drum, a cleaning unit, and a developer recovering device for recycling developer containing a magnetic ingredient from the cleaning unit to the developing unit.
The developer recovering device includes a developer conveying device including a revolving element made of a non-magnetic material and having an outer surface, and a plurality of magnets arranged adjacent the inner surface of the circumference of the revolving element, and a casing encircling at least a portion of the outer surface of the revolving element with a given spacing therebetween for receiving developer containing the magnetic ingredient. The revolving element is arranged to pick up developer from the casing by the magnetic power of the magnets, and the picked up developer is conveyed to the developing unit by the revolving element as ears of developer on the revolving element.

REFERENCES:
patent: 3697160 (1972-10-01), Clark
patent: 3726588 (1973-04-01), Moser
patent: 3926517 (1975-12-01), Nagahara
patent: 4110034 (1978-08-01), Suzuki
patent: 4144808 (1979-03-01), Iwasa et al.
patent: 4252435 (1981-02-01), Manghirmalani
patent: 4279499 (1981-07-01), Rezanka et al.
patent: 4298268 (1981-11-01), Sato et al.
patent: 4370056 (1983-01-01), Hays

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