US Patent Issued to CANON on Sept. 8 for "External additive for toner and toner" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,730,389, issued on Sept. 8, was assigned to CANON K.K. (Tokyo).

"External additive for toner and toner" was invented by Yukihiro Abe (Chiba, Japan), Ichiro Kanno (Chiba, Japan), Junichi Tamura (Ibaraki, Japan), Mari Kaburagi (Chiba, Japan), Hayato Ida (Ibaraki, Japan), Masao Suzuki (Kanagawa, Japan), Kei Inoue (Kanagawa, Japan) and Waka Hasegawa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The external additive for toner includes an external additive particle containing: a fine particle A; and a plurality of fine particles B that are each present so as to partially protrude from a surface of the fine particle A, wherein the fine particle A (i) ...