ALEXANDRIA, Va., June 16 -- United States Patent no. 12,306,581, issued on May 20, was assigned to CANON K.K. (Tokyo).

"Toner" was invented by Kenta Kamikura (Kanagawa, Japan), Kozue Uratani (Shizuoka, Japan), Kosuke Fukudome (Tokyo), Tetsuya Kinumatsu (Shizuoka, Japan), Takuya Mizuguchi (Shizuoka, Japan) and Yuta Komiya (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present disclosure provides a toner that achieves both high image gloss and high image loadability. The toner includes a toner particle that includes: a styrene-acrylic resin having a unit represented by the formula (1); and an ester compound A, wherein the ester compound A is an ester compound represented by the formula (2)...