ALEXANDRIA, Va., Jan. 20 -- United States Patent no. 12,529,973, issued on Jan. 20, was assigned to CANON K.K. (Tokyo).
"Toner" was invented by Masaya Komuro (Shizuoka, Japan), Masao Suzuki (Kanagawa, Japan), Kenji Ookubo (Shizuoka, Japan) and Naoya Isono (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner comprising a toner particle comprising a binder resin, wherein the toner particle comprises a compound represented by a following structural formula (1) and a compound represented by a following structural formula (2), and a content of the compound represented by the following structural formula (2) comprised in the toner is 0.3 mass ppm or more,"
The patent was filed on June 1, 2023, ...