ALEXANDRIA, Va., June 10 -- United States Patent no. 12,292,713, issued on May 6, was assigned to CANON K.K. (Tokyo).
"Toner and method for producing the same" was invented by Hisasuke Kajihara (Ibaraki, Japan), Yuya Chimoto (Chiba, Japan), Junichi Tamura (Ibaraki, Japan), Kazuhisa Shirayama (Tokyo) and Hayato Ida (Ibaraki, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide a toner having both low temperature fixability and hot offset resistance and having excellent scratch resistance of a fixed image. A toner including a toner particle containing a binder resin, a crystalline polyester, and a calcium carbonate particle, in which the crystalline polyester includes a unit derived from an aliphati...