| 摘要 |
PURPOSE:To prevent the error in the sequence of charging developer components by providing engaging parts to the 1st and 2nd sealing members so that the 2nd sealing member is unsealed after the unsealing operation of the 1st sealing member. CONSTITUTION:Slender apertures 46, 47 are sealed respectively by the 1st and 2nd sealing members 48, 49. The terminal 48d on the sealed side of the 1st sealing member 48 is adhered to the free end 49c of the turnup part 49a of the 2nd sealing member. The member 48 is unsealed and magnetic particles 20 are first charged into a developer supply vessel 14 when the end part 48c of the 1st sealing member is pulled. The nonmagnetic developer is charged into the vessel 14 when the 2nd sealing end part 49c pulled out by the terminal end 48d of the 1st sealing member is further pulled. |
