| 摘要 |
PROBLEM TO BE SOLVED: To obtain a developing device capable of preventing the leakage, lumping and filming of a developer. SOLUTION: Supplying and developing rollers 20 and 10 for the developer T whose outside surfaces are in contact with each other are carried on a side frame, to be rotatable in opposite directions, both side surfaces of the developing roller 10 are sealed with seal members and lubricant members which are made of materials having low coefficients of surface friction and smaller in diameter than the supplying roller 20 are fixedly provided on the side surface of the supplying roller 20, between the seal members and the supplying roller 20. |
