ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,222, issued on Oct. 27, was assigned to CANON K.K. (Tokyo).
"Toner and method for producing the toner" was invented by Masatake Tanaka (Kanagawa, Japan), Shohei Tsuda (Shizuoka, Japan) and Tatsuya Saeki (Shizuoka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toner comprising a toner particle comprising a binder resin and boric acid, wherein the toner has an average circularity of 0.95 or more, and the toner has a shape factor SF1 of 105 to 125, and a method for producing to provide a toner with excellent durability for which the improvement of transfer rate with the above physical characteristics."
The patent was filed on July 21, 2022, u...