Developing unit provided with mechanism for exhausting developin

Details Developing unit provided with mechanism for exhausting developin Developing unit provided with mechanism for exhausting developin

1992-07-22

1993-10-05

Moses, R. L.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

355245, G03G 1508

Patent

active

052507491

ABSTRACT:
A developing unit is intended to have a capability of efficiently exhausting developing powder. The developing unit is constructed to have a developing bath, one or more rollers for development, an exhausting mechanism for exhausting the developing powder out of the developing bath, a shielding member for shielding the exhausting mechanism from the developing bath or exposing it to the developing bath, and a control unit for controlling the rollers, the exhausting mechanism and the shielding member. When exhausting the developing powder, the control unit operates to drive the rollers and then activate the shielding member for exposing the exhausting mechanism to the inside of the developing bath after a certain time is elapsed since the rollers are driven. Further, a pair of rotary bodies may be provided in parallel for opening or closing the exhaust outlet of the developing bath selectively at a proper time.

REFERENCES:
patent: 4451133 (1984-05-01), Kopp et al.
patent: 4565435 (1986-01-01), Hart
patent: 4625895 (1986-12-01), Tsukano
patent: 4891671 (1990-01-01), Iwamasa
patent: 5025289 (1991-06-01), Guslits et al.
Abstract of Japanese Kokai 60-153066, Published Aug. 1985.

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