Developer supply container

A developer supply container comprising:

• a container body provided with a developer supply port;
• a cover plate mounted on an outer surface of the container body such that a gap is formed between the cover plate and the container body, the cover plate being provided an opening corresponding to the developer supply port, and a through hole adjacent to an end of the opening;
• a seal tape having a main section mounted on the container body to seal the developer supply port, and a folded section extending from the main section and through the gap and the through hole of the cover plate such that an end portion of the seal tape is exposed outside the cover plate;
• a seal piece mounted on an outer surface of the cover plate and provided with an opening corresponding to the opening of the cover plate;
• and
• a door member slidably mounted on the outer surface of the container body and moveable relative to the container body between a first position where the opening of the seal piece is closed by the door member, and a second position where the opening of the seal piece is opened.