US Patent Issued to CANON on March 17 for "Developer feed roller, developing apparatus, electrophotographic image forming apparatus, and process cartridge" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,578,669, issued on March 17, was assigned to CANON K.K. (Tokyo).

"Developer feed roller, developing apparatus, electrophotographic image forming apparatus, and process cartridge" was invented by Seiji Tsuru (Shizuoka, Japan) and Hiroaki Komatsu (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electrophotographic roller comprising a substrate having a conductive surface and a conductive layer on the surface of the substrate, wherein the conductive layer is a surface layer of the electrophotographic roller, and has a skeleton comprising polyurethane and an electron conductive filler in the polyurethane, the conductive layer comprises at...