JPS6436296A - Electric/acoustic converter - Google Patents

Electric/acoustic converter

Info

Publication number
JPS6436296A
JPS6436296A JP19185287A JP19185287A JPS6436296A JP S6436296 A JPS6436296 A JP S6436296A JP 19185287 A JP19185287 A JP 19185287A JP 19185287 A JP19185287 A JP 19185287A JP S6436296 A JPS6436296 A JP S6436296A
Authority
JP
Japan
Prior art keywords
diaphragm
powder
alginate fiber
inorganic powder
alginate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP19185287A
Other languages
Japanese (ja)
Other versions
JPH0644835B2 (en
Inventor
Yoshio Kobayashi
Ryukichi Matsuo
Hiroshi Ueshima
Satoshi Fukuoka
Masanori Takahashi
Kazuo Tsuchiya
Takashi Furukawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PIONEER CONE CORP
National Institute of Advanced Industrial Science and Technology AIST
Pioneer Corp
Original Assignee
PIONEER CONE CORP
Agency of Industrial Science and Technology
Pioneer Electronic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PIONEER CONE CORP, Agency of Industrial Science and Technology, Pioneer Electronic Corp filed Critical PIONEER CONE CORP
Priority to JP19185287A priority Critical patent/JPH0644835B2/en
Publication of JPS6436296A publication Critical patent/JPS6436296A/en
Publication of JPH0644835B2 publication Critical patent/JPH0644835B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To obtain a diaphragm for a speaker in which physical properties can be freely selected and an internal loss is large by using an inorganic powder or an alginate fiber including the inorganic powder and the organic powder. CONSTITUTION:Alginic acid soda (molecular weight 6X10<5>) 100-200g and water 2.5l are added, sufficiently mixed by a kneader and a consistent liquid is obtained. While the powder of carbon graphite is added to the consistent liquid little by little, it is uniformly mixed, and the spinning solution of sodium alginate in which the inorganic powder is dispersed, namely, a dope is prepared. Next, this is introduced to a spinning raw material supplying tank 4, and the deformed dope is discharged from a nozzle 3 into a coagulation liquid in a first coagulation bath 7 to subject it to a reaction. After the manufactured alginate fiber is washed with water, it is cut into staples with approximate fiber length of 3mm. Thus, the alginate fiber is obtained and a diaphragm for an electric/ acoustic converter is formed. Thus, since the diaphragm is made and formed with the alginate fiber including a fine-grain as a main body, the physical properties can be freely selected.
JP19185287A 1987-07-31 1987-07-31 Electro-acoustic transducer Expired - Fee Related JPH0644835B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19185287A JPH0644835B2 (en) 1987-07-31 1987-07-31 Electro-acoustic transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19185287A JPH0644835B2 (en) 1987-07-31 1987-07-31 Electro-acoustic transducer

Publications (2)

Publication Number Publication Date
JPS6436296A true JPS6436296A (en) 1989-02-07
JPH0644835B2 JPH0644835B2 (en) 1994-06-08

Family

ID=16281579

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19185287A Expired - Fee Related JPH0644835B2 (en) 1987-07-31 1987-07-31 Electro-acoustic transducer

Country Status (1)

Country Link
JP (1) JPH0644835B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05328486A (en) * 1990-12-06 1993-12-10 Agency Of Ind Science & Technol Electroacoustic transducer
EP0637190A2 (en) * 1993-07-30 1995-02-01 Sony Corporation Diaphragm for a capacitance type loudspeaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05328486A (en) * 1990-12-06 1993-12-10 Agency Of Ind Science & Technol Electroacoustic transducer
EP0637190A2 (en) * 1993-07-30 1995-02-01 Sony Corporation Diaphragm for a capacitance type loudspeaker
EP0637190A3 (en) * 1993-07-30 2004-09-01 Sony Corporation Diaphragm for a capacitance type loudspeaker

Also Published As

Publication number Publication date
JPH0644835B2 (en) 1994-06-08

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