US Patent Issued to CANON on June 30 for "Toner" (Japanese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,759, issued on June 30, was assigned to CANON K.K. (Tokyo).

"Toner" was invented by Tohru Hiramatsu (Shizuoka, Japan), Tomohisa Sano (Shizuoka, Japan), Hiroki Kagawa (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 including a release agent, 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 usi...