US Patent Issued to Ricoh on Dec. 16 for "Active energy ray polymerization initiator, active energy ray curing composition, active energy ray curing ink, aqueous active energy ray curing ink, container, image forming device, image forming method, and method of manufacturing active energy ray polymerization initiator" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,530, issued on Dec. 16, was assigned to Ricoh Co. Ltd. (Tokyo).

"Active energy ray polymerization initiator, active energy ray curing composition, active energy ray curing ink, aqueous active energy ray curing ink, container, image forming device, image forming method, and method of manufacturing active energy ray polymerization initiator" was invented by Shigeyuki Harada (Shizuoka, Japan) and Yuya Hirokawa (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An active energy ray polymerization initiator has a structure of Chemical Formula (1) or (2), L1 represents Chemical Formula (I), L2 represents Chemical Formula (II), one of L3 and L...