ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,985, issued on April 14, was assigned to Canon K.K. (Tokyo).
"Method for manufacturing toner" was invented by Takeshi Ohtsu (Ibaraki, Japan), Junichi Tamura (Ibaraki, Japan), Yosuke Iwasaki (Chiba, Japan), Ryuji Okamura (Ibaraki, Japan) and Daisuke Yamashita (Chiba, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a toner including supplying powder particles containing a binder resin via a plurality of powder-particle supplying units to a treating chamber, the treating chamber having a cylindrical inner peripheral surface, heat treating the powder particles in the treating chamber by supplying hot air into the treatin...