Developer detection apparatus and an image forming apparatus

Details Developer detection apparatus and an image forming apparatus Developer detection apparatus and an image forming apparatus

1998-11-03

2000-11-14

Lee, Susan S. Y.

Electrophotography

Diagnostics

Consumable

399 27, 399 63, G03G 1508

Patent

active

061481564

ABSTRACT:
A developer detection apparatus includes a detection member for detecting the developer contained in the developer container detachably mountable on a main body of an image forming apparatus. A biasing member biases the detection member to the developer container side. An interlocking mechanism interlocks with open and close operations of the opening and closing cover for attaching the developer container to or detaching the developer container from the main body of the apparatus. In this developer detection apparatus, when the opening and closing cover is in the open state, the detection member is positioned by the interlocking mechanism in a location so not as to be in contact with the developer container against the biasing force of the biasing member, and when the opening and closing cover is in the closed state, the detection member is positioned so as to be in contact with the developer container by the biasing force of the biasing member. According to the arrangement, the detection member and the developer container are in contact with each other with a very stable contacting force, thus making it possible to perform highly reliable detection of the presence and absence of developer or remaining developer.

REFERENCES:
patent: 4913087 (1990-04-01), Saita et al.
patent: 5166729 (1992-11-01), Rathbun et al.
patent: 5428427 (1995-06-01), Lee
patent: 5893007 (1999-04-01), Lim

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