ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,458, issued on May 12, was assigned to Seiko Epson Corp. (Tokyo).
"Method for cleaning liquid ejecting head" was invented by Shunsuke Watanabe (Matsumoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a method for cleaning a liquid ejecting head including a nozzle plate in which a nozzle configured to eject a liquid is formed, a pressure chamber communicating with the nozzle, a vibration plate that defines a part of the pressure chamber, and a piezoelectric element that is laminated on the vibration plate, the method including: an ultrasonic cleaning step of ultrasonically vibrating a cleaning liquid in a cleaning tank by an ...