ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,882, issued on Feb. 18, was assigned to CANON K.K. (Tokyo).
"Toner" was invented by Atsuhiko Ohmori (Kanagawa, Japan), Hiroki Kagawa (Shizuoka, Japan), Keisuke Adachi (Tokyo) and Tomoko Sugita (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner comprising: a toner particle comprising a binder resin and a hydrocarbon wax; and inorganic fine particles, wherein the inorganic fine particles include silica fine particles surface-treated with specific polydimethylsiloxanes, a total amount of trimethylsilanol in the silica fine particles is from 1.0 ppm to 5.0 ppm, where a standard value of an amount of ions of an ester group is measure...