It includes with the electronic equipment and device null resin and is made to carbonize the bamboo material which use

摘要

PROBLEM TO BE SOLVED: To provide a diaphragm for speaker, which is large in the degree of freedom of regulating the quality of sound and which is capable of securing wetproof reliability or strength while capable of being excellent in appearance, further, which is capable of improving a productivity also, as well as an electronic instrument and device which employ the speaker.;SOLUTION: The diaphragm for speaker is constituted of a material into which at least a resin material and a carbonized bamboo material are mixed.;COPYRIGHT: (C)2009,JPO&INPIT