ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,706, issued on Aug. 18, was assigned to CANON K.K. (Tokyo).
"Developing device" was invented by Osamu Ariizumi (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A developing device includes a first feeding screw to feed developer, a first rotatable member to carry and feed the developer for developing an electrostatic latent image formed on an image bearing member, a first magnet fixedly provided inside the first rotatable member and including a first magnetic pole and a second magnetic pole provided downstream of and adjacent to the first magnetic pole in a rotational direction of the first rotatable member and which is different in pola...