Image forming device with improved mixing of circulated develope

Details Image forming device with improved mixing of circulated develope Image forming device with improved mixing of circulated develope

1997-05-23

1999-03-23

Pendegrass, Joan

Electrophotography

Control of electrophotography process

Control of developing

399102, 399256, 399359, G03L 1508

Patent

active

058872248

ABSTRACT:
There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.

REFERENCES:
patent: 5077584 (1991-12-01), Tanaka et al.
patent: 5109254 (1992-04-01), Oka et al.
patent: 5557382 (1996-09-01), Tatsumi et al.
patent: 5682583 (1997-10-01), Ito et al.

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