US Patent Issued to Canon on March 31 for "Aqueous fluorescent ink, ink cartridge and ink jet recording method" (Japanese Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,218, issued on March 31, was assigned to Canon K.K. (Tokyo).

"Aqueous fluorescent ink, ink cartridge and ink jet recording method" was invented by Saki Tasaki (Kanagawa, Japan), Daiji Okamura (Tokyo), Satoru Kobayashi (Kanagawa, Japan) and Hirohiko Yuasa (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are an aqueous fluorescent ink with which a fluorescent color image having an excellent color developability and lightfastness can be recorded, and an ink cartridge and an ink jet recording method using this aqueous fluorescent ink. The aqueous fluorescent ink contains a resin particle dyed with a fluorescent dye, and a quinacridone pig...