US Patent Issued to SEIKO EPSON on June 23 for "Ink jet ink composition and recording method" (Japanese Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,603, issued on June 23, was assigned to SEIKO EPSON Corp. (Japan).

"Ink jet ink composition and recording method" was invented by Manabu Taniguchi (Shiojiri, Japan), Hiroaki Kumeta (Matsumoto, Japan), Soichi Yamazaki (Shiojiri, Japan), Yoshifumi Hano (Matsumoto, Japan) and Shunsuke Uchizono (Shiojiri, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink jet ink composition includes a self-dispersible pigment; an alcohol having 4 carbon atoms or less; an asymmetric alkyl ether; and water, a content of the alcohol with respect to a total mass of the ink jet ink composition is 0.5 to 15 percent by mass, and a content of the water with respect to...