US Patent Issued to CANON on July 21 for "Toner" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,797, issued on July 21, was assigned to CANON K.K. (Tokyo).

"Toner" was invented by Tomohisa Sano (Shizuoka, Japan), Hiroki Kagawa (Shizuoka, Japan), Tohru Hiramatsu (Shizuoka, Japan), Kazuyuki Sato (Kanagawa, Japan) and Shohei Shibahara (Shizuoka, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toner includes a toner particle, and a silica fine particle on a surface of the toner particle. Fragment ions corresponding to a D unit structure are observed in a specific measurement; when the silica fine particle is dispersed in a mixed solution of ethanol and aqueous solution of NaCl, followed by a titration operation using sodium hydroxide, a tit...