| 摘要 |
PURPOSE:To prevent the leakage of toner in a developing device and simultaneously to surely return the toner on a developing roller to the side of a supplying roller. CONSTITUTION:A first sealing member 7 is provided in surface contact with the lower part of the developing roller (not shown by the figure) and third sealing member 9 as an elastic body are provided on the rear surfaces on both end parts of the first sealing member 7 so as to push up it by resilience force. A second sealing members 8 is provided along the side surfaces of both ends of the developing roller and a circumferential direction to cover the bottom surface from the first sealing member 7 to a blade 6. Further, ore the back surface part of the second sealing member 8, a wall 81 inclined by 10 deg.-20 deg. against the center of the rotational face of the developing roller is provided as well. |
