Fitzpatrick, Cella, Harper & Scinto
Recording head having multi-layer matrix wiring
 A recording head has a liquid channel defining member for defining a liquid channel communicated to a discharging opening for discharging ink, and a base member having a plurality of electricity-heat converting elements for generating heat to be transmitted to the ink filling the liquid channel. A matrix wiring portion is connected electrically to the electricity-heat converting elements, respectively. The matrix wiring portion has a multi-layer constitution having a first wiring and a second wiring. The second wiring is provided through an insulating layer on the first wiring, and the plurality of electricity-heat converting elements are provided on the insulating layer. 
Canon Kabushiki Kaisha
B B B B B B B B
B41J B41J B41J B41J B41J B41J B41J B41J
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Shuji Toshihiro Makoto Masami Sakai
Koyama Mori Shibata Kasamoto Yokoyama