ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,704, issued on May 13, was assigned to Canon K.K. (Tokyo).

"Electrophotographic image forming apparatus, developing apparatus, and coupling member" was invented by Masanari Morioka (Numazu, Japan), Shigeo Miyabe (Numazu, Japan) and Takahito Ueno (Mishima, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrophotographic image forming apparatus comprises a main assembly that includes moving force applying portion, a main assembly engaging portion having a driving shaft and a rotational force applying portion provided on the driving shaft, and an electrophotographic photosensitive drum. A cartridge is dismountable from the main assembly with...