Developing apparatus having a detachable developer cartridge

Details Developing apparatus having a detachable developer cartridge Developing apparatus having a detachable developer cartridge

1991-08-29

1992-12-29

Grimley, A. T.

Photocopying

Contact printing

Light boxes

222DIG1, G03G 1506

Patent

active

051755874

ABSTRACT:
A developing apparatus includes a first locking means for locking a first supplying lid disposed at a first supplying opening in a closing position, a second locking element for locking a second supplying lid of a second supplying opening in a closing position, and a lock release element for releasing only the second locking element when a detachable developer cartridge is used. The second locking element includes a concave portion formed on a peripheral wall of the second supplying opening and a lock piece disposed in the concave portion, and a hole formed at an edge of the second supplying lid. The lock piece engages the hole when the second supplying lid is closed, thereby the lid is locked. The lock release element includes a lid having a opening disposed at an upper surface of the developing apparatus and a hole disposed at the lock piece, and the detachable developer cartridge comprises a pair of lock release pieces. The hole engages only the lock release piece for releasing the locking of the second supplying lid when the developer cartridge is mounted on the developing apparatus.

REFERENCES:
patent: 4491161 (1985-01-01), Tamura et al.
patent: 4878091 (1989-10-01), Morita et al.
patent: 4972887 (1990-11-01), Hacknauer et al.
patent: 5040025 (1991-08-01), Fukuchi

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