ALEXANDRIA, Va., Sept. 3 -- United States Patent no. 12,405,553, issued on Sept. 2, was assigned to CANON K.K. (Tokyo).

"Image forming system having developer container, rotating member for rotating shutter, and restriction mechanism for rotating member" was invented by Kazuaki Nogami (Saitama, Japan), Takeo Kawanami (Kanagawa, Japan), Akinori Mitsumata (Tokyo), Hiroyuki Munetsugu (Kanagawa, Japan) and Goshi Ozaki (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An attached portion of an image forming apparatus includes a rotating member of which at least a part is exposed outside the image forming apparatus when the developer container is attached, and a rotation restricting mechanism that is...