ALEXANDRIA, Va., July 3 -- United States Patent no. 12,344,753, issued on July 1, was assigned to FUJIFILM Corp. (Tokyo).
"Ink set and image recording method" was invented by Naoka Hamada (Kanagawa, Japan), Atsushi Kaeriyama (Kanagawa, Japan) and Shota Suzuki (Kanagawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink set including an ink containing water, a pigment, a pigment dispersion polymer A, and a water-soluble polymer B, and a treatment liquid containing water and at least one selected from the group consisting of a polyvalent metal salt, an acidic compound, and a cationic polymer, in which the pigment dispersion polymer A contains a specific acid group and an aromatic ring, and the water-...