DEVELOPER STORAGE CONTAINER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE

摘要

A developer storage container for storing a developer comprises a developer bag (16) which is provided with a pouring port for pouring the developer and openings (35a) for discharging the developer, and a sealing member (19) which has a joint part joined to the developer bag (16) so as to seal the openings and peels from the developer bag (16) by being moved to thereby be able to expose the openings. The sealing member has a first joint part (22a) on the upstream side and a second joint part (22b) on the downstream side in the unsealing direction of the sealing member with the openings therebetween, and the second joint part is disposed at a position where the second joint part is not in contact with the openings. Consequently, the unsealing characteristic when the flexible container for storing the developer is unsealed is improved.