ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,837, issued on Dec. 30, was assigned to CANON K.K. (Tokyo).
"Toner" was invented by Maki Imura (Kanagawa, Japan), Hisasuke Kajihara (Ibaraki, Japan), Kentaro Kamae (Kanagawa, Japan), Yuu Nishimura (Chiba, Japan) and Takaho Shibata (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner comprising a toner particle comprising a binder resin, wherein the binder resin comprises an amorphous polyester A and a crystalline polyester C; the amorphous polyester A has an amorphous polyester segment a1 and a2; the amorphous polyester segment a2 has a monomer unit of a specific alcohol a0; the crystalline polyester C is a polymer having a crystalline poly...