US Patent Issued to RICOH on Oct. 28 for "Drive controller, head unit, and liquid discharge apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,454,128, issued on Oct. 28, was assigned to RICOH COMPANY LTD. (Tokyo).

"Drive controller, head unit, and liquid discharge apparatus" was invented by Takashi Kinokuni (Tokyo) and Ryuji Tsukamoto (Kanagawa, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A drive controller includes circuitry. The circuitry generates multiple types of drive pulses to be applied to a driver of a liquid discharge head including a valve to open and close a discharge port, and applies the multiple types of drive pulses to the driver to cause the driver to move the valve to open and close the discharge port. Each of the multiple types of drive pulses causes the valve to m...