Patent ID: 7272346

Claim:
A toner cartridge comprising: a toner holding chamber that holds toner therein, said toner holding chamber including a first chamber and a second chamber; a partition wall that divides said toner holding chamber into the first chamber and the second chamber; a toner moving member that causes the toner in the first chamber to move; and an agitating member that agitates the toner in the second chamber, wherein said toner moving member and said agitating member are operatively coupled so that when one of said toner moving member and said agitating member is driven in rotation, the other of said toner moving member and said agitating member also rotates, and wherein said toner moving member and said agitating member are coupled through a coupling mechanism that extends through an opening formed in the partition wall, said partition wall has a leakage preventing structure that prevents the toner from leaking between the first chamber and the second chamber.