ALEXANDRIA, Va., June 16 -- United States Patent no. 12,304,209, issued on May 20, was assigned to SAKATA INX Corp. (Osaka, Japan).
"Cleaning fluid, ink set, and cleaning method" was invented by Hirohito Maeda (Osaka, Japan), Kazuki Moriyasu (Osaka, Japan), Eri Ueda (Osaka, Japan) and Takaaki Sano (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cleaning fluid used in an ink-jet printer ejecting an aqueous ink-jet ink containing a pigment and an alkali-soluble resin, to clean a portion of the ink-jet printer to which the ejected aqueous ink-jet ink is adherent. The cleaning fluid includes a surfactant, an antiseptic, and water. The surfactant is a compound having a polyoxyalkylene skeleton and ...