ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,052, issued on May 20, was assigned to SEIKO EPSON Corp. (Japan).
"Ink set, recording method, and recording device" was invented by Takayoshi Kagata (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An ink set is an ink set including a cyan ink C1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm3)1/2, a magenta ink M1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm3)1/2, a yellow ink Y1 which has a fluorescent brightening intensity of 3.0 or greater and an SP value of 12 to 18 (cal/cm3)1/2, a cyan ink C2 which has a fluorescent bright...