US Patent Issued to Seiko Epson on March 17 for "Liquid ejecting head" (Japanese Inventors)

ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,638, issued on March 17, was assigned to Seiko Epson Corp. (Tokyo).

"Liquid ejecting head" was invented by Yoichi Naganuma (Matsumoto, Japan), Shohei Mizuta (Matsumoto, Japan), Yuki Watanabe (Matsumoto, Japan) and Madoka Goi (Matsumoto, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid ejecting head has a piezoelectric element, a diaphragm, and a pressure chamber substrate having a pressure chamber coupled to a nozzle and contributing to ejection of a liquid by applying pressure on the liquid through vibration of the diaphragm and a dummy pressure chamber not contributing to ejection of the liquid. Each of the pressure chamber and the d...