Printer which utilizes previously used developer

Details Printer which utilizes previously used developer Printer which utilizes previously used developer

1992-07-01

1993-07-27

Grimley, A. T.

Photocopying

Contact printing

Light boxes

G03G 1520

Patent

active

052314588

ABSTRACT:
In a printer capable of developing a beautiful image even if waste toner particles are utilized repeatedly for development, residual magnetic toner particles on a photosensitive drum are collected in a cleaning device and returned to a development device by a collecting auger and a carrier auger through a toner particle carrying path. In the development device, the magnetic toner particles are carried into a development area for subsequent developing by a developing sleeve. Just before the development area, toner particles and additives on the toner surface which are not suitable for development contained in the collected waste toner particles are selectively collected by a bias applying roller which is provided between the developing sleeve and the photosensitive drum.

REFERENCES:
patent: 4376578 (1983-03-01), Tanaka et al.
patent: 4462677 (1984-07-01), Onoda
patent: 4696565 (1987-09-01), Imanaka
patent: 4894688 (1990-01-01), Taniguchi et al.
patent: 4958197 (1990-09-01), Kinashi et al.
patent: 5040022 (1991-08-01), Kinoshita et al.
patent: 5128724 (1992-07-01), Hayashi et al.

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