| 摘要 |
PROBLEM TO BE SOLVED: To completely prevent developer from flowing out to the periphery from a developing container even when the developer held on the peripheral surface of a sleeve member flows to the outside in a width direction from both ends of the sleeve member in an area where a sealing member does not exist. SOLUTION: At least the inside part in the width direction of the upstream edge of the sealing member as seen in the rotating direction of the sleeve member is extended to be inclined in a downstream direction toward the inside in the width direction. |
