Fitzpatrick, Cella, Harper & Scinto
Ink jet recording head and substrate
 There is disclosed a substrate for use in an ink jet recording head, comprising on a base member an insulating film comprising an insulating material, a bubble-generating heater for generating heat required for bubble generation in ink, and a preheating heater for generating heat to be applied to a recording head for effecting recording on a recording medium, wherein the preheating heater is provided in a layer lower than that of the bubble-generating heater with interposition of the insulating film. 
Canon Kabushiki Kaisha
B B
B41J B41J
additional inventional
Teruo Masahiko Toshihiro
Ozaki Kubota Mori