ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,595, issued on Sept. 15, was assigned to SEIKO EPSON Corp. (Japan).
"Nonaqueous ink jet ink composition and ink jet recording apparatus" was invented by Toru Saito (Yamagata, Japan) and Yusuke Fujisawa (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A nonaqueous ink jet ink composition is used for a recording method which performs a long printing operation without a step of taking measures against nozzle missing, and the ink jet ink composition described above includes a polymerizable monomer, a liquid photoinitiator in the form of a liquid at 20deg C., and a solid photoinitiator in the form of a solid at 20deg C. at a content of ze...