RatnerPrestia
Speaker diaphragm and speaker using same, and electronic equipment and device using said speaker, and speaker diaphragm manufacturing method
A diaphragm is formed of paper manufactured from a first fiber material and a second fiber material. The first fiber material is beaten to have a given freeness, and the second fiber material is made by carbonizing bamboo fiber that has been fibrillated into a microfibril state. This structure allows the second fiber material to increase a rigidity of the diaphragm and also increase an internal loss, so that sound quality of the speaker that employs this diaphragm can be improved.
Panasonic Corporation
H H H H Y
H04R H04R H04R H04R Y10T
inventional additional additional inventional additional
Yohei Toru Yoshimichi
Jin Fujii Kajihara