US Patent Issued to SEIKO EPSON on Aug. 12 for "Radiation-curable ink jet ink composition and ink jet printing method" (Japanese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,927, issued on Aug. 12, was assigned to SEIKO EPSON Corp. (Japan).

"Radiation-curable ink jet ink composition and ink jet printing method" was invented by Yoshinobu Yoshida (Shiojiri, Japan), Kyohei Tanaka (Sagamihara, Japan) and Midori Sekine (Matsumoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A radiation-curable ink jet ink composition contains polymerizable monomers A including at least one monofunctional monomer B and at least one multifunctional monomer C. The polymerizable monomers A include at least one polymerizable monomer A1 whose homopolymer has a glass transition temperature of 50deg C. or more in a proportion of 20% by mass...