Cartridge unit

Details Cartridge unit Cartridge unit

1990-12-05

1992-02-25

Grimley, A. T.

Photocopying

Contact printing

Light boxes

141364, 141366, G03G 1506

Patent

active

050917501

ABSTRACT:
A toner cartridge unit for a copying machine having a double shutter at the mouth of the toner cartridge. The double shutter is locked when the cartridge is not attached to a toner hopper of the copying machine and prevents toner from coming out. Owing to the double shutter structure, the outside of the cartridge is always clean. When the cartridge unit is attached to the hopper, many locking and releasing mechanisms for the double shutter and a third shutter provided at the hopper entrance work sequentially and automatically as the cartridge is moved from a preparation site to a supplying site of the toner hopper.

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