PROCESS CARTRIDGE, PHOTORECEPTOR CARTRIDGE, DEVELOPER CARTRIDGE AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To prevent toner from being leaked because a toner cap to cover a filling port is broken or detached by a strong shock from the outside when a developing cartridge is attached to a photoreceptor cartridge.

SOLUTION: The filling port 90 is arranged at a position where at least it is partially protected by the protection wall 80 of a lock means for preventing the falling-off of the developing cartridge 46 provided on one side wall 30e of the photoreceptor cartridge 3 having a photoreceptor drum 13 when the developing cartridge 4 is attached to the photoreceptor cartridge 3.

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