ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,479,204, issued on Nov. 25, was assigned to Seiko Epson Corp. (Tokyo).
"Liquid ejection apparatus and print head" was invented by Sukehiro Ito (Nagano, Japan) and Masayuki Kawakami (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection apparatus includes a drive signal output circuit that outputs a drive signal and a print head that ejects a liquid, in which the print head includes a temperature detection portion that detects temperature information, the drive signal output circuit includes an amplification circuit that outputs an amplification modulation signal, a smoothing circuit that outputs the drive signal, and a basic dri...