Image-forming apparatus having a replaceable cartridge and a tra

Details Image-forming apparatus having a replaceable cartridge and a tra Image-forming apparatus having a replaceable cartridge and a tra

1990-12-24

1991-12-03

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355298, 355327, G03G 1514

Patent

active

050703706

ABSTRACT:
An image-forming apparatus, for example, electrophotographic printer has a replaceable cartridge which includes an image member, for example, a rotatable photoconductive drum. The drum cooperates with a transfer member, for example, a transfer drum which transfer member must be cleaned. The cartridge includes a chamber for receiving toner cleaned from the transfer member. Preferably, the image-forming apparatus creates a series of color toner images which are transferred to the surface of the transfer member in registration to create a multicolor image. The multicolor image is transferred in turn to a receiving sheet. The residual toner on the transfer member can be cleaned either by a cleaning device permanently located in the apparatus or a cleaning device in the cartridge. In either instance, the toner is collected in the cartidge and therefore does not require separate maintenance beyond replacement of the cartridge.

REFERENCES:
patent: 3847119 (1974-11-01), Hoffman et al.
patent: 4026648 (1977-05-01), Takahashi
patent: 4453820 (1984-06-01), Suzuki
patent: 4607941 (1986-08-01), Honda
patent: 4712906 (1987-12-01), Bothner
patent: 4862224 (1989-08-01), Ku
patent: 4876577 (1989-10-01), Ogura et al.
patent: 4891676 (1990-01-01), Davis et al.

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