ALEXANDRIA, Va., June 25 -- United States Patent no. 12,337,596, issued on June 24, was assigned to SEIKO EPSON Corp. (Japan).
"Liquid ejection system" was invented by Kunio Tabata (Shiojiri, Japan), Noritaka Ide (Shiojiri, Japan), Dai Nozawa (Matsumoto, Japan), Rika Tanimoto (Matsumoto, Japan) and Yukihiro Hanaoka (Shiojiri, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejection system includes a first head unit and a second head unit. The first head unit includes a first determining circuit that determines whether a first power supply voltage is normal, a first drive circuit that outputs a first drive signal based on the first power supply voltage, and a first ejecting head that ejects liqu...