ALEXANDRIA, Va., June 19 -- United States Patent no. 12,330,419, issued on June 17, was assigned to RICOH COMPANY LTD. (Tokyo).
"Liquid discharge head and image forming apparatus" was invented by Masami Iwama (Ibaraki, Japan) and Shiomi Andoh (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A liquid discharge head includes a piezoelectric element and a flexible circuit board to supply a driving signal and a common-electrode signal to the piezoelectric element. The piezoelectric element includes multiple drive portions arranged in a first direction; multiple non-drive portions; and multiple dummy drive portions at each portion between the multiple drive portions and the multiple non-drive portions in the...