Developer accommodating unit, process cartridge and electrophotographic image forming apparatus

摘要

A developer accommodating unit (25) includes a flexible developer accommodating container (26) sealed with a sealing member (19) at its developer discharging opening (35); a rotatable unsealing member (20) for removing the sealing member from the opening; a drive transmission member (41) for transmitting a rotational force to the unsealing member, wherein the drive transmission member is mounted at one longitudinal end portion of the unsealing member and is rotatably assembled with a frame (17); and a supporting member (17a) for supporting the unsealing member (20) when the unsealing member is assembled. The supporting member (17a) includes a preventing portion (18h) for preventing the unsealing member (20) from dropping from the supporting member (17a). In a state in which the drive transmission member (41) is assembled with the frame (17), a gap between the unsealing member (20) and the supporting member (17a) is larger than a gap between the drive transmission member (41) and the frame (17). The unsealing member (20) is spaced from the supporting member (17a).