US Patent Issued to FUJIFILM on March 18 for "Ink set for security image recording, security image recording method, and article with recorded security image" (Japanese Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,621, issued on March 18, was assigned to FUJIFILM Corp. (Tokyo).

"Ink set for security image recording, security image recording method, and article with recorded security image" was invented by Norihide Shimohara (Kanagawa, Japan), Misato Sasada (Kanagawa, Japan) and Hiromichi Numazawa (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an ink set for security image recording comprising an infrared-absorbing ink jet ink which contains a polymerizable compound and an infrared absorbing dye and in which a maximum value of an absorbance in a wavelength range of 750 nm to 1,000 nm is larger than a maximum value of an absorbance...