ALEXANDRIA, Va., Aug. 18 -- United States Patent no. 12,710,642, issued on Aug. 18, was assigned to Canon K.K. (Tokyo).
"Optical scanning device and image forming apparatus" was invented by Jun Nagatoshi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical scanning device includes a light source, a rotatable polygon mirror, an optical member, an output portion and a detector. The optical member guides the luminous flux scanned by the rotatable polygon mirror to an image bearing member. The output portion is provided on an upstream side of the optical member in the scanning direction and outputs a signal corresponding to receiving the luminous flux. The detector is provided on the upstream side of...