PURPOSE: To improve operability when the toner replenishing is carried out by opening a shutter of a toner cartridge after the toner cartridge is attached to a developing device.
CONSTITUTION: The shutter is provided to freely rotate and seal an opening 46 in the toner cartridge 31, while an inputting gear 63 is provided on one edge of the shutter, an idler gear 61 engaged with the inputting gear 63 and a rotating member 60 which is engaged with the idler gear 61 are provided. The rotating member 60 is provided to freely rotate on one edge of an agitator shaft 50 of the toner cartridge 31 and one end of an energizing member 64 energizing in the direction to close the shutter is hooked onto the rotational member 60. On the other hand, an actuating protrusion 68 is provided in a top construction body 10b to be engaged with the rotational member 60 when being closed and to rotate the rotational member 60 against the energizing member 64. Then, after the toner cartridge 31 is attached to the developing device 13, the shutter is opened or closed in a motion linked with the opening/ closing action of the top construction body 10b of the device main body.
TANAKA YOSHIAKI
TANZAWA ATSUSHI
MATSUMAE IWAO
MIYAMOTO MASAYOSHI
TAMIYA TAKAHIRO
