Dry-process developer replacing and supplying device for...

Details Dry-process developer replacing and supplying device for... Dry-process developer replacing and supplying device for...

G - Physics

03

G

314/40

G03G 15/08 (2006.01)

Patent

CA 1233873

ABSTRACT A developer replacing and supplying device for a small-size electrophotographic copier is disclosed which removes a used developer from a developing unit and supplies a fresh developer instead. After a used developer which is a mixture of carrier and toner has been discharged, fresh carrier is introduced into the developing unit and, then, fresh toner to be mixed with the fresh carrier. The fresh carrier and the fresh toner are stored in physically independent cylindrical cartridges, which are selectively mounted in a cartridge casing. The cartridge casing is mounted in a hopper casing, which is provided integrally with the developing unit, and driven in a rotational motion together with the cartridge. The supply of the toner or the carrier from the associated cartridge into the developing unit is selectively intersepted by an interceptor disposed in a slotted portion of a hopper casing, which comprises an elongate and flat, stationary shutter having numerous equally spaced apetures and a movable shutter having numerous apertures capable of communicating with the apertures of the stationary sutter.

472079

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