| 摘要 |
PURPOSE: A manufacturing method of diaphragm is provided to manufacture a diaphragm for speakers excellent in both elastic modulus and internal loss by coating a vinyl based synthetic resin on the diaphragm and vacuum evaporating Ti, TiN or TiOx. CONSTITUTION: An agent of paper manufacture is added to pulp to manufacture a diaphragm body followed by drying and coating a diaphragm with a vinyl-based synthetic resin. The coated synthetic resin enhances contact adherence of the diaphragm with Ti, TiN and TiOx and prevents distortion of the diaphragm while maintaining the elasticity of the diaphragm. The diaphragm is vacuum deposited with one selected from a group including Ti, TiN and TiOx to enhance the elasticity of the diaphragm. The thickness of deposition is at least 0.05 microns considering sonic speed and elasticity enhancement, and at most 5 microns considering workability and appearance.
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