ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,682, issued on March 25, was assigned to CANON K.K. (Tokyo).
"Toner" was invented by Kozue Uratani (Shizuoka, Japan), Kenta Kamikura (Kanagawa, 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: "A toner including a toner particle containing a binder resin and an ester compound, wherein the binder resin contains a styrene-acrylic-based resin, the styrene-acrylic-based resin contains a specific unit, the ester compound has a specific structure, and a molar ratio of the specific unit to the ester compound is 0.5 to 1.5....