Patent ID: 6883902
Filing Date: 2005-04-26
Classification: B41J

Abstract:
1. A liquid-jet head having a passage-forming substrate in which pressure generating chambers communicating with nozzle orifices are formed; and a piezoelectric element provided on one surface of said passage-forming substrate via a vibration plate, said piezoelectric element composed of a lower electrode, a piezoelectric layer, and an upper electrode, the liquid-jet head comprising: a zirconium oxide layer formed on the one surface of said passage-forming substrate; a cerium oxide layer formed on said zirconium oxide layer; a superconductor layer formed on said cerium oxide layer and composed of a yttrium-barium-copper-oxygen-based material (YBCO); said lower electrode formed on said superconductor layer and composed of strontium ruthenate; and said piezoelectric layer formed on said lower electrode.