| 摘要 |
A developer cartridge includes a storing portion (31) that stores developer and has an opening, a shutter member that opens and closes the opening, and a seal member (50) that seals between the shutter member and the storing portion. The seal member is so provided that both end portions (55) thereof face each other. One end portion of the seal member has at least one angled portion provided inside both side end edges of the seal member in width direction of the seal member, and the other end portion has an angled portion along the angled portion of said one end portion. |
