Patent ID: 7059709
Filing Date: 2006-06-13
Classification: B41J,H01L

Abstract:
1. A method for producing a piezoelectric film for an ink jet recording head, said ink jet recording head comprising: a pressure chamber communicating with an ink discharge port; a diaphragm provided in correspondence with said pressure chamber; and a piezoelectric element provided in correspondence with the diaphragm, wherein an ink in said pressure chamber is discharged through said ink discharge port by a change of volume in said pressure chamber caused by the piezoelectric element, wherein the piezoelectric element comprises the piezoelectric film, and the piezoelectric film is held between a lower electrode and an upper electrode, and wherein said method comprises the steps of: coating a substrate with a composition for forming the piezoelectric film, to form a coating film, said composition containing a dispersoid obtained from a metallic compound, and the content of hafnium in said composition being 3,000 ppm or less; drying the coating film; and sintering the dried coating film to obtain the piezoelectric film.