ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,982, issued on May 27, was assigned to CANON K.K. (Tokyo).
"Image forming apparatus having longer term anti-fogging" was invented by Shuhei Tokiwa (Tokyo), Norihiro Shirahata (Tokyo) and Satoru Motohashi (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An image forming apparatus includes a control portion to execute a first operation in which a charging voltage applying portion generates a first potential difference that generates an electrostatic force to move developer from a charging member to an image bearing member, a second operation in which a developing voltage applying portion generates a second potential difference that generat...