ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,547,089, issued on Feb. 10, was assigned to Canon K.K. (Tokyo).
"Toner and toner production method" was invented by Shintaro Kawaguchi (Kanagawa, Japan), Masatake Tanaka (Kanagawa, Japan), Taiji Katsura (Shizuoka, Japan) and Dai Nozaki (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "The subject toner includes a toner particle containing a binding resin and an inorganic oxide particle, wherein the inorganic oxide particle is a particle of an oxide containing at least one element selected from the group consisting of: Si; Mg; Al; Ti; and Sr, wherein, when an area of the inorganic oxide particle is represented by Sm and a sectional area of ...