ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,552, issued on May 20, was assigned to Canon K.K. (Tokyo).

"Image forming apparatus for forming image using plurality of exposure heads" was invented by Junichi Goda (Chiba, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A first exposure head forms an image corresponding to a first color based on a first synchronization signal. A second exposure head forms the image corresponding to a second color based on a second synchronization signal. A period of the first synchronization signal in a case where the first exposure head is to form the image for a second surface of a sheet is shorter than a period of first synchronization signal in a case whe...