ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,284, issued on Aug. 26, was assigned to Canon K.K. (Tokyo).
"Aqueous ink, ink jet recording method and ink jet recording apparatus" was invented by Minako Kawabe (Tokyo) and Tomohiro Yamashita (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an aqueous ink for ink jet, which enables the recording of an image having satisfactory abrasion resistance and has satisfactory storage stability. The aqueous ink for ink jet includes: a wax; a dispersant for dispersing the wax; an ester compound; and a water-soluble organic solvent, wherein the wax is a wax represented by the following general formula (1), and the ester compound is a...