US Patent Issued to DNP FINE CHEMICALS on July 14 for "Pretreatment ink and ink set containing same" (Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,991, issued on July 14, was assigned to DNP FINE CHEMICALS Co. LTD. (Yokohama, Japan).

"Pretreatment ink and ink set containing same" was invented by Syunya Morozumi (Yokohama, Japan) and Yuji Makimoto (Yokohama, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pretreatment ink that suppresses white spots, suppresses the occurrence of overflow defects from water-based ink, and can produce recorded matter having high image reproducibility. This pretreatment ink, which is coated in advance onto a base material before a water-based ink is coated onto the base material, contains at least a reaction agent, water, and an organic solvent. The organic...