Patent ID: 6925274
Filing Date: 2005-08-02
Classification: G03G

Abstract:
1. A developing device comprising: a casing formed with a developing chamber and a hopper chamber; a first shielding member rotatably positioned between the developing chamber and the hopper chamber; and at least one second shielding member having a first end and a second end opposite said first end, the second shielding member rotatably positioned inside the hopper chamber, wherein rotational movement of the first shielding member supplies a developing agent from the hopper chamber to the developing chamber; the first shielding member in a predetermined shielding condition prevents developing agent inside the developing chamber from entering the hopper chamber; the second shielding member divides the hopper chamber into a plurality of sub-chambers by simultaneously contacting opposing inner surfaces of the hopper chamber with said first end and said second end; and rotational movement of the second shielding member moves developing agent housed inside the sub-chamber toward the developing chamber.