US Patent Issued to SEIKO EPSON on April 22 for "Treatment liquid and recording method" (Japanese Inventor)

ALEXANDRIA, Va., June 6 -- United States Patent no. 12,281,232, issued on April 22, was assigned to SEIKO EPSON Corp. (Japan).

"Treatment liquid and recording method" was invented by Yuta Asakawa (Azumino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A treatment liquid is a water-based treatment liquid and is used for a recording method of adhering a water-based ink jet ink composition containing a colorant and the treatment liquid to a recording medium. The treatment liquid contains: an organic acid; and at least one selected from an organic acid polyvalent metal salt and a cationic polymer, a content of the at least one selected from an organic acid polyvalent metal salt and a cationic polymer is 1...