US Patent 7293865 Ink jet recording head, and ink container

An ink container detachably mountable to a recording head, the recording head including an ink jet recording chip which is driven by a driving voltage supplied through a driving voltage wiring lead and an electric signal supplied through an electric signal wiring lead to eject ink, an electrical opening portion provided in at least one of the driving voltage wiring lead and the electric signal wiring lead, the ink container includes a connection element for establishing electrical connection by electrically closing the electrical opening portion when the ink container is mounted to the recording head.