An ink jet recording head has an energy generating device line constituted by electrically connecting N (N>1) energy generating devices in series. The energy generating devices are disposed to correspond to a plurality of discharge ports for discharging ink and generate discharging energy. The energy...http://www.google.com.au/patents/US6056385?utm_source=gb-gplus-sharePatent US6056385 - Method of operating and an apparatus using an ink jet recording head having serially connected energy generating means
