ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,428, issued on Sept. 9, was assigned to CANON K.K. (Tokyo).
"Toner pack" was invented by Masatake Tanaka (Kanagawa, Japan), Dai Nozaki (Shizuoka, Japan) and Masaya Komuro (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner pack stores a toner that has first and second toner particles. The surface of the second toner particle has a portion formed by connecting a plurality of silicon-containing protrusions on its surface, with the content of the second toner particle within a specific range relative to the content of the first toner particle. The toner pack has a storage portion and a discharge member, where the discharge member h...