| 摘要 |
PROBLEM TO BE SOLVED: To easily improve the rigidity without degrading the characteristics of a speaker diaphragm having a slim outer shape, relating to a manufacturing method of the speaker diaphragm to be used in various kinds of acoustic apparatuses and video apparatuses, the speaker diaphragm manufactured by the manufacturing method, a speaker, and an electronic device and an apparatus. SOLUTION: Fine natural fibers are formed by spray coating as a sub material for locally improving the rigidity of a diaphragm body at both ends in the longitudinal direction of the diaphragm body for the speaker which is manufactured by a paper making method and includes a rectangular, oblong, track or elliptic outer shape. The manufacturing method of the speaker diaphragm can locally improve the rigidity easily without degrading the characteristics of the speaker diaphragm. COPYRIGHT: (C)2009,JPO&INPIT
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