ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,558,886, issued on Feb. 24, was assigned to Seiko Epson Corp. (Tokyo).
"Head unit and liquid ejecting apparatus" was invented by Masayuki Kawakami (Nagano, Japan) and Yasuhiko Kosugi (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a head unit in which a first print head that ejects a liquid includes: a first nozzle for ejecting the liquid according to change in the volume of the first pressure chamber; and a first temperature detection section that detects first temperature information corresponding to a temperature of the first pressure chamber and outputs the first temperature information as a first temperature signal, ...