US Patent Issued to Ricoh on Oct. 14 for "Ink set, image forming method, and image forming apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,441,902, issued on Oct. 14, was assigned to Ricoh Co. Ltd. (Tokyo).

"Ink set, image forming method, and image forming apparatus" was invented by Kiminori Masuda (Tokyo), Hiroaki Takahashi (Kanagawa, Japan) and Masaki Kudo (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An ink set is provided that includes a pretreatment liquid containing a resin (R1), a color ink containing a resin (R2), and a clear ink containing a resin (R3), in which the resin (R1), the resin (R2), and the resin (R3) have an identical type of bonding structure in a repeating unit of a molecule."

The patent was filed on July 14, 2023, under Application No. 18/352,524....