US Patent Issued to CANON on March 24 for "Image forming apparatus" (Japanese Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,585,211, issued on March 24, was assigned to CANON K.K. (Tokyo).

"Image forming apparatus" was invented by Hiroko Katagiri (Tokyo), Shuichi Tetsuno (Kanagawa, Japan), Toshihiko Takayama (Kanagawa, Japan) and Mikihiko Hamada (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An additive coating is executed, where an additive is transferred, from a developing roller to a photosensitive drum by setting a surface potential of the drum to be lower than a developing voltage, and from the drum to a charging roller by setting a charging voltage to be lower than the surface potential. By setting a potential difference Vback between the surface pote...