ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,130, issued on Oct. 28, was assigned to SEIKO EPSON Corp. (Japan).
"Maintenance liquid and maintenance method" was invented by Yuko Hishida (Matsumoto, Japan), Miki Uchida (Matsumoto, Japan), Yusuke Mizutaki (Shiojiri, Japan), Hiromichi Takanashi (Shiojiri, Japan) and Tomohiro Kawasaki (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A maintenance liquid is used to maintain an ink jet head of a printing apparatus configured to eject an ink for printing from the ink jet head. The maintenance liquid is aqueous and subject to detection by a conductivity-based sensor. The maintenance liquid includes at least one selected from the group co...