ALEXANDRIA, Va., March 3 -- United States Patent no. 12,566,392, issued on March 3, was assigned to Canon K.K. (Tokyo).

"Belt conveyance device and image forming apparatus" was invented by Kazuyuki Narita (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A belt unit dismountably mounted on a main assembly includes an endless belt, a tension mechanism, a tension releasing member and contacting portion. The tension mechanism includes a tension roller applying the tension to the belt by stretching the belt and movably provided between a first position where the tension is applied to the belt and a second position where the tension is released and an urging member urging the tension roller. The tensio...