Patent ID: 6168746
Filing Date: 2001-01-02
Classification: B28B,B41J,C04B

Abstract:
A method for injection molding fine particulate ceramic ferroelectric materials to form an article comprising the steps of: (a) spray drying fine particulate ceramic ferroelectric material to form agglomerate material; (b) mixing the spray dried fine particulate ceramic agglomerate ferroelectric material with a binder system including materials selected from the group consisting of wax having wax components of different molecular weight, magnesium-X silicate, agaroid gel forming material, and agaroid gel forming material mixed with magnesium-X silicate to form a compounded material; (c) injecting the compounded material at a selected pressure into a mold to form a green article with first and second surfaces, each having a series of channels; (d) debinding or drying the green article; (e) sintering the debinded or dried green article to form the final molded article; (f) polling the final molded article to align the electrical dipoles within the piezoelectric material; (g) forming a coating of conductive material over the first and second surfaces of the final molded article and then cutting grooves through conductive coating at the bottom surface of the channels in the first surface of the final molded article; and (h) providing an orifice plate over second surface of the channel member and a substrate over the first surface of the final molded article.