发明授权
- 专利标题: Acoustic vibration plate
- 专利标题(中): 声振板
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申请号: US883547申请日: 1992-05-15
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公开(公告)号: US5473121A公开(公告)日: 1995-12-05
- 发明人: Masaru Uryu
- 申请人: Masaru Uryu
- 申请人地址: JPX Tokyo
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX3-111898 19910516
- 主分类号: D21J7/00
- IPC分类号: D21J7/00 ; H04R7/02 ; H04R7/12 ; H04R31/00 ; G10K13/00
摘要:
An acoustic diaphragm employed in a speaker or the like and a method for producing the acoustic diaphragm are disclosed. A diaphragm substrate is a diaphragm exhibiting air permeability such as a paper diaphragm. The substrate is processed with filling by microfibrilated pulp. For filling, the substrate is immersed in the liquid dispersion of the microfibrilated pulp and the pulp is deposited on the substrate under suction. When the microfibrilated pulp is deposited on the substrate under suction, any voids present in the substrate are closed by the microfibrilated pulp so that air tightness is improved without lowering the sound quality or detracting from desirable properties of the diaphragm, such as low density, high toughness and low losses.
公开/授权文献
- US6072945A System for automated electromigration verification 公开/授权日:2000-06-06