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(2,000 yen) 1. '3 Patent applicant address Osaka Prefecture Kadoma city Oza Kadoshin name
1002 Name (582) Representative of Matsushita Electric Industrial Co., Ltd. Shoji Matsushita 4
Agent address 571 address Osaka Prefecture Kadoma city Oda Kamon address 1006 (4)
Application copy 1 copy 4 :, L-0! : +, '(4) [phase] Japanese Patent Office Open Patent Gazette ?
Japanese Patent Application Laid-Open No. 51-12125 Office number number 1 @ -book 1%
m1104 reference polarization holding layer and this polarization holding layer Kll -Electret
electro-acoustic transducer и и и O O ?? 1 1 @ @ @ The present invention is electret electroacoustic transducing 11 K? The sound quality has been changed to IQI% *, and there are nine
Eretatto electric sounds and four on the cost control equipment. Heretofore, a fluorine resinbased film has been popularly used mainly from the viewpoint of electret characteristics
(polarization retention) in an electroacoustic transducer using an electret. However, when used as
a vibrating membrane, a fluorine-based resin film is as good as a sound device due to the lack of
a specific mechanical strength change, and it can not be ignored. Therefore, in order to modify
the sound quality, the electret is bonded to the fixed electrode, and a uniform mechanical strong
to large I & Zilm is used as a vibrating membrane. ellj1Kli O bond to electrodes of electrets,
electrode and electrets) 0 Meets need knees such as drilling, and has the simplicity of the
structure as one feature-Attenuating Eretatto electric sound I conversion O advantage SUMMARY
OF THE INVENTION The present invention seeks to provide an electret material having excellent
mechanical properties by modifying the disadvantages of the conventional fluorocarbon resin
electrets described above. In this hole *, the electret vibrating film used in the ? ? electret
electroacoustic transducer is, as shown in the figure, a polarization holding layer 1 of rounding of
electret polarization holding, and a reinforcement layer 2 for strengthening the polarization
holding layer. It is characterized by having two layers. -The material of the polarization
maintaining layer is widely known from commercial products such as Teflon F: EP, Thean, Teflon
PFA, etc. A carbon atom is supplied, and all nine atoms are converted to fluorine atoms KW to
give nine structures Fluorine-containing resin, its laminated layer and mixed food are used
together O page Fluoride End Page: 1 Roll, Fluoride B 1 Li re ?, etc., or Quaternary, Fluorinated
ethylene-etherey coweight K like the body. , Fluorine bonded to a carbon atom and embedded in
a structure, bulk resin has insufficient moisture resistance.
The thickness of the polarization maintaining layer 5 is IX О 26 ?, preferably 21 О 10 ?. As
the material of the reinforcing layer, a heat-resistant insulating material such as polyimide or
poly-acetoidide is used. However, this is not always the case. It is a material which is thin and
produces an agar, which can be used as long as it is a surface sensitive layer and is written on a 9
fluorine resin. The thickness of the reinforcing layer is 2 to aS?, preferably 81 to 80%. ?? The
above-mentioned two-layer structure of the eyebrow film is produced by the method of 2 types
1III. One of them is heat-resistant 74 Rum! l) m1 m1 ty-)), the other one is a reinforcing layer on
a fluorine resin resin; It is necessary to obtain an electret material having excellent polarization
retention and mechanical strength by any method. Vibration of the above-mentioned new plastic
film electret material is vibrated. By using it for membrane, excellent electrification electric
electrification electronic electrifier with excellent sound quality can be obtained.
4, a simple illustration of the drawing is the electret electro-acoustic variation that applies to this
hole @. The imitation of the diaphragm of a converter is shown. 1 и и и и и и и и и и и и и и и и и и и и и и и и и и и и
и и и и и Name of the agent Attorney Nakao Toshio Nakano or one person 6 Inventors and agents
other than the above (1) inventor (2) agent address Osaka Prefecture Kadoma City University
Kadoma 1006 EndPage: ?
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