ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,789, issued on Sept. 30, was assigned to CANON K.K. (Tokyo).
"Toner and method for producing toner" was invented by Daisuke Yoshiba (Shizuoka, Japan), Tsuneyoshi Tominaga (Shizuoka, Japan) and Takashi Matsui (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 binder resin has a side-chain crystalline polymer B having a monomer unit A made of at least one polymerizable monomer A selected from the group consisting of (meth)acrylic acid esters having a linear alkyl group having 18 to 36 carbon atoms, and the toner particle comprises boric acid."
The patent was file...