US Patent Issued to CANON on Sept. 29 for "Toner and toner production method" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,748,358, issued on Sept. 29, was assigned to CANON K.K. (Tokyo).

"Toner and toner production method" was invented by Megumi Shino (Chiba, Japan), Takeshi Hashimoto (Ibaraki, Japan), Gaku Sato (Chiba, Japan) and Hayato Ida (Ibaraki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toner comprises a toner particle that contains a binder resin having a crystalline resin and an amorphous resin, and a wax, wherein a matrix-domain structure made up of a matrix including the crystalline resin, and domains including the amorphous resin, is present in a cross-sectional observation of the toner, the crystalline resin has a specific monomer unit, in a diffe...