US Patent Issued to SEIKO EPSON on May 19 for "Ink set and recording method" (Japanese Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,728, issued on May 19, was assigned to SEIKO EPSON Corp. (Japan).

"Ink set and recording method" was invented by Yuta Asakawa (Azumino, Japan) and Mitsuaki Kosaka (Minowa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink set according to the present disclosure includes: a treatment liquid containing an aggregating agent; a deep ink composition; and a light ink composition, the ink compositions containing colorants, belonging to the same color system, and each being a water-based ink jet ink, the light ink composition contains an organic solvent which is a condensate of an alkanediol having 2 or 3 carbon atoms and which has two hydroxy grou...