DIAPHRAGM FOR SPEAKER, SPEAKER EMPLOYING THE SAME, AND ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a diaphragm for a speaker which is formed by injection molding and can expand a high band reproducing area. SOLUTION: The diaphragm for a speaker having the thinnest portion of not more than 120μm can be obtained using injection molding, by mixing polypropylene with a hydrocarbon-based rubber material to improve fluidity. The speaker employing the diaphragm exhibits such an effect that a high band reproducing area can be expanded by reduction in weight of the diaphragm. COPYRIGHT: (C)2007,JPO&INPIT