| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner cartridge by which low torque and highly precise toner replenishment is performed by efficiently controlling a toner state (mainly bulk density of toner) with torque lower than before even when solidification of the toner occurs and whose structure is simple. SOLUTION: The toner cartridge has a toner storage part 1, a toner replenishment opening part 3 which replenishes the toner T to a developing device, a toner conveyance screw part 2 which conveys the toner in the storage part to the replenishment opening part 3 and a toner state variable member 4 which varies a state of the toner in the storage part, the member 4 varies the state of the toner in the storage part by being oscillated in accordance with rotation of a toner conveyance screw 23, its oscillation period T1 and ration (T2/T1) in oscillation are controllable by a spiral blade pitch C of the toner conveyance screw 23 and its oscillation amplitude is controllable by spiral blade outer diameter D of the toner conveyance screw. COPYRIGHT: (C)2006,JPO&NCIPI
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