ALEXANDRIA, Va., July 3 -- United States Patent no. 12,346,053, issued on July 1, was assigned to Canon K.K. (Tokyo).

"Image forming apparatus with first and second couplings for transmission of a rotational drive force to a unit attachable and detachable therefrom" was invented by Shinkichi Yamamoto (Shizuoka, Japan), Hiroshi Kawamura (Shizuoka, Japan), Yuta Kawaguchi (Shizuoka, Japan) and Hideto Chino (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes an apparatus body including a drive source, a rotary member, and a first coupling movable in an axial direction with respect to the rotary member, and a unit attachable to and detachable from the apparatus body...