Toner container lift mechanism

Details Toner container lift mechanism Toner container lift mechanism

1989-01-03

1990-04-24

Grimley, A. T.

Photocopying

Contact printing

Light boxes

118653, G03G 1506

Patent

active

049203819

ABSTRACT:
A development apparatus in an electrostatographic copier or printer includes a constant force lift mechanism for automatically and gradually lifting a toner container so as to maintain contact between toner in the container and a toner replenishment roller. The mechanism includes a cam and spring assembly consisting of pivotable L-shaped cams that are connected by a horizontal tension spring for automatically lifting and lowering the toner container in response to the weight of toner in the container.

REFERENCES:
patent: 3539077 (1970-11-01), Drexler et al.
patent: 3914460 (1975-10-01), Maksymiak
patent: 4353637 (1982-10-01), Parker
patent: 4417802 (1983-11-01), Forbes, II
patent: 4500196 (1985-02-01), Shimura
patent: 4743937 (1988-05-01), Martin

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