| 摘要 |
A developing apparatus includes an elastic blade (11) contacted to a developing roller (8) to regulate a thickness of a layer of a developer to be formed on the developing roller. To the longitudinal end portions of the developing roller, seals (9) are press-contacted to prevent leakage of the developer. Each of the seals has a projection (9a) toward the longitudinally central portion of the developing roller. The projection (9a) is overlaid on the blade (11) at a position where the blade and the developing roller are contacted. |
