ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,717,129, issued on Aug. 25, was assigned to Sharp K.K. (Sakai City, Japan).

"Optical scanning device and image forming apparatus" was invented by Kenzo Ohkubo (Sakai City, Japan) and Takayuki Ohno (Sakai City, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotational direction of a multi-beam light source around a rotational axis is made different to a side where a sub-scanning width in a sub-scanning direction of a plurality of light beams is made smaller between a case of one-side incidence in which the plurality of light beams are made incident to the rotary polygon mirror from either one of sides in the rotary axis direction of a rotary poly...