REPLENISHER DEVELOPER, TONER CARTRIDGE, REPLENISHER DEVELOPER FEEDING DEVICE AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a replenisher developer having a more stable carrier concentration, and to provide a toner cartridge for feeding to a developing unit with stable quantity and carrier concentration, a replenisher developer feeding device, and an image forming apparatus for suppressing the occurrence of an abnormal image using the replenisher developer feeding device.

SOLUTION: The replenisher developer is obtained by mixing a toner containing a metallic material and having a true specific gravity of 1.35-1.60 g/cm3and a carrier in a certain ratio. The toner cartridge 1 filled with the replenisher developer is formed in a bag shape so as to be volume reducible. The replenisher developer feeding device includes a suction pump 3 which sucks the replenisher developer from the toner cartridge 1 and feeds it to a developing unit 6.

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