Rotary development unit which supplies fresh toner back to a ton

Details Rotary development unit which supplies fresh toner back to a ton Rotary development unit which supplies fresh toner back to a ton

1997-11-19

1999-06-29

Lee, S.

Electrophotography

Image formation

Development

G03G 1501

Patent

active

059180927

ABSTRACT:
A rotary development unit includes a support frame having a plurality of developers arranged in a radial pattern and places any one of the developers in a development position opposite to a photosensitive drum by rotation while retaining the developers; a plurality of toner supply containers attached to the support frame so as to become adjacent to the respective developers; toner supply channels which are disposed substantially in parallel with a rotary shaft of the support frame and connect the respective developers to the adjacent toner supply containers; and supply augers which convey fresh toner to the developers from the toner supply containers within the toner supply channels according to a given number of rotations. In the rotary development unit, when the supply auger is suspended and the support frame is rotated, the fresh toner filled in the toner supply channel is conveyed to the toner supply container from the developer.

REFERENCES:
patent: 5585598 (1996-12-01), Kasahara et al.
patent: 5752141 (1998-05-01), Nishimura et al.

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