ALEXANDRIA, Va., March 26 -- United States Patent no. 12,257,832, issued on March 25, was assigned to Seiko Epson Corp. (Tokyo).
"Print head and liquid ejecting apparatus" was invented by Atsushi Shimura (Nagano, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A print head ejecting a liquid with respect to a medium and assembled to a liquid ejecting apparatus includes: an ejecting portion ejecting the liquid by receiving a drive signal; an electrically erasable non-volatile memory; and a wireless communication module, in which history information changing in accordance with an operation state of the print head is stored in the non-volatile memory, and the wireless communication module transmits the hist...