| 摘要 |
PROBLEM TO BE SOLVED: To achieve a structure capable of suppressing the occurrence of image defects, while reducing an installation procedure of an apparatus.SOLUTION: A communication port for communicating an agitation chamber with a developing chamber is sealed with a sealing sheet, in a state of storing a developer in the agitation chamber of a developing container before initial drive of an apparatus. Then, the sealing sheet is removed from the communication port by rotating a winding shaft 501 by initial drive of the apparatus. The winding shaft 501 is driven by a drive input part via a gear train 421 (drive train). After the winding shaft 501 is driven by a predetermined amount by initial drive of the apparatus, a block mechanism 510 (drive stop mechanism) blocks drive transmission to the winding shaft 501. Namely after winding of the sealing sheet by the winding shaft 501 is completed, the drive transmission between the drive input part and the drive train is blocked by the drive stop mechanism.SELECTED DRAWING: Figure 12 |
