| 摘要 |
PROBLEM TO BE SOLVED: To stabilize the initial stage value of toner concn. and to suppress the fatigue of an image carrier caused by the handling of a process cartridge by stripping a seal member from the opening of a developer storage chamber and a toner supplying opening in order, and opening them. SOLUTION: The opening 67A in the bottom part in the developer storage chamber 67 receiving a virgin developer D is hermetically sealed with the seal member 68, before a new process cartridge is loaded in an image forming device. When the process cartridge is loaded, the edge of the seal member 68 projected to the outside from an exit 61E is grasped and pulled out in a tearing off direction shown by the arrow. Then, the opening 67A in the bottom in the developer storage chamber 67 is gradually opened from a farthest sticking position 67C and a first stirring member 60A and a second stirring chamber are charged with the virgin developer D in the developer storage chamber 67. After the opening 67A is fully opened, the lower part of the toner supplying opening 61A is continuously opened. |
