Developing unit including a partition wall defining a non-agitat

Details Developing unit including a partition wall defining a non-agitat Developing unit including a partition wall defining a non-agitat

1995-03-06

1996-04-16

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

222DIG1, G03G 1508

Patent

active

055087922

ABSTRACT:
A developing unit comprises a developer container having an agitation space for agitating developer therein and a toner hopper for feeding toner to the agitation space of the developer container. A lower wall of the toner hopper includes a toner drop port allowing toner to fall into the aforesaid agitation space. On a surface of the lower wall exposed to the agitation space, disposed is a partition wall surrounding the periphery of the toner drop port. The partition wall defines a non-agitation space. The toner is allowed to fall from the toner drop port smoothly into the agitation space through the non-agitation space which is not affected by the agitation.

REFERENCES:
patent: 4478512 (1984-10-01), Zoltner
patent: 4583842 (1986-04-01), Shimono et al.
patent: 5153646 (1992-10-01), Abuyama et al.
patent: 5172168 (1992-12-01), Satoh et al.
patent: 5398106 (1995-03-01), Eguchi

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