RatnerPrestia
Speaker diaphragm, speaker dust cap, speaker sub-cone, speaker using these components, and electronic apparatus using the same
A loudspeaker of high sound quality is achieved by improving rigidity of a material used for a diaphragm, a dust cap and a sub-cone. The diaphragm, the dust cap and the sub-cone of the loudspeaker are made of a paper beaten with the material containing bamboo fibers obtained from a bamboo tree aged one year or older, of which the fibers are finely beaten to an extent of micro-fibrillated form. The diaphragm and the dust cap are also made with a beaten paper containing at least 2 wt % of “A fibers” having stems of no greater than 30 μm in diameter, and surfaces of the stems are fibrillated into shaggy branches having diameters of 1 μm or less.
Panasonic Corporation
H H
H04R H04R
additional inventional
Masahide Toshihiro Toru Nobuo Hitoshi Shinya Kazuyoshi Kenichi Yoshiyuku
Sumiyama Shimizu Fujii Nakamura Satou Mizone Mimura Ajiki Takahashi