DE68904582T2 - Elektroakoustische membran und verfahren zur herstellung. - Google Patents

Elektroakoustische membran und verfahren zur herstellung.

Info

Publication number
DE68904582T2
DE68904582T2 DE8989106298T DE68904582T DE68904582T2 DE 68904582 T2 DE68904582 T2 DE 68904582T2 DE 8989106298 T DE8989106298 T DE 8989106298T DE 68904582 T DE68904582 T DE 68904582T DE 68904582 T2 DE68904582 T2 DE 68904582T2
Authority
DE
Germany
Prior art keywords
electroacoustic
membrane
producing
same
electroacoustic membrane
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.)
Expired - Lifetime
Application number
DE8989106298T
Other languages
English (en)
Other versions
DE68904582D1 (de
Inventor
Mutsuaki Murakami
Susumu Yoshimura
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.)
Japan Science and Technology Agency
Panasonic Corp
Original Assignee
Research Development Corp of Japan
Matsushita Electric Industrial Co Ltd
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 Research Development Corp of Japan, Matsushita Electric Industrial Co Ltd filed Critical Research Development Corp of Japan
Application granted granted Critical
Publication of DE68904582D1 publication Critical patent/DE68904582D1/de
Publication of DE68904582T2 publication Critical patent/DE68904582T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Manufacturing & Machinery (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
DE8989106298T 1988-04-08 1989-04-10 Elektroakoustische membran und verfahren zur herstellung. Expired - Lifetime DE68904582T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63087517A JPH01259698A (ja) 1988-04-08 1988-04-08 振動板、電気音響変換器および振動板の製造方法

Publications (2)

Publication Number Publication Date
DE68904582D1 DE68904582D1 (de) 1993-03-11
DE68904582T2 true DE68904582T2 (de) 1993-05-19

Family

ID=13917184

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8989106298T Expired - Lifetime DE68904582T2 (de) 1988-04-08 1989-04-10 Elektroakoustische membran und verfahren zur herstellung.

Country Status (4)

Country Link
US (2) US5064019A (de)
EP (1) EP0336448B1 (de)
JP (1) JPH01259698A (de)
DE (1) DE68904582T2 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2805088B2 (ja) * 1989-07-21 1998-09-30 日清紡績株式会社 スピーカー用振動板及びその製造方法
JPH0423699A (ja) * 1990-05-18 1992-01-28 Matsushita Electric Ind Co Ltd 音響振動板
JP2584114B2 (ja) * 1990-07-27 1997-02-19 松下電器産業株式会社 音響振動板の製造方法
US5178804A (en) * 1990-07-27 1993-01-12 Matsushita Electric Industrial Co., Ltd. Method of manufacturing acoustic diaphragm
EP0529594A1 (de) * 1991-08-29 1993-03-03 Ucar Carbon Technology Corporation Glanzkohlenstoffbeschichteter Graphit-Gegenstand zur Anwendung in Siliziumkristallzüchtung
JPH0638295A (ja) * 1992-07-15 1994-02-10 Sumitomo Electric Ind Ltd スピ−カ−用振動板及びその製造方法
WO1994025256A1 (en) * 1993-04-30 1994-11-10 The Dow Chemical Company Three-dimensional polybenzazole structures
FR2735646B1 (fr) * 1995-06-16 1997-08-22 Phl Audio Haut-parleur pour frequences elevees
JPH11100206A (ja) 1997-09-29 1999-04-13 Honda Motor Co Ltd 炭素材料
GB2334851B (en) * 1999-02-08 2000-01-12 Joseph Harold Stephens A loudspeaker/microphone
EP1100287A1 (de) * 1999-11-10 2001-05-16 M- Tech(HK) Co. Ltd Lautsprecher
EP1209656B1 (de) * 2000-05-25 2011-05-11 Aica Engineering Co., Ltd. Oberflächenmaterial und verfahren zur unterdrückung von oberflächenwelleneinflüssen
AU2003261889A1 (en) 2003-09-02 2005-03-29 Kaneka Corporation Filmy graphite and process for producing the same
GB0426143D0 (en) * 2004-11-26 2004-12-29 Element Six Ltd Rigid three-dimensional components
CN103415467B (zh) * 2011-03-28 2015-04-22 株式会社钟化 石墨膜的制造方法
EP3761505A4 (de) 2018-03-01 2021-12-01 Kaneka Corporation Mems-vibrator und mems-oszillator

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5273021A (en) * 1975-12-15 1977-06-18 Pioneer Electronic Corp Sound generating vibrator plate and method of producing same
US4112168A (en) * 1977-03-23 1978-09-05 Motorola, Inc. High stiffness speaker cone
JPS53130013A (en) * 1977-04-19 1978-11-13 Matsushita Electric Ind Co Ltd Diaphragm for speakers and production of the same
JPS5463750A (en) * 1977-10-31 1979-05-22 Pioneer Electronic Corp Method of fabricating electronic acoustic converter vibrating plate
JPS5487209A (en) * 1977-12-23 1979-07-11 Pioneer Electronic Corp Method of fabricating acoustic device vibrating plate
JPS6016385B2 (ja) * 1977-12-28 1985-04-25 日本カ−ボン株式会社 可撓性黒鉛製品の製造法
US4271045A (en) * 1978-06-13 1981-06-02 Steigerwald Wolf Erhard Electrically conductive layer and method for its production
JPS5533237A (en) * 1978-08-30 1980-03-08 Toshiba Corp Microprogram controller
US4343376A (en) * 1980-03-18 1982-08-10 Pioneer Electronic Corporation Vibratory elements for audio equipment
JPS60181129A (ja) * 1984-02-28 1985-09-14 Agency Of Ind Science & Technol 高導電性ポリイミド熱処理物及びその組成物の製造法
US4599193A (en) * 1983-06-30 1986-07-08 Director-General Of The Agency Of Industrial Science And Technology, An Organ Of The Ministry Of International Trade And Industry Of Japan Highly electroconductive pyrolyzed product retaining its original shape and composition formed therefrom
JPS60242041A (ja) * 1984-04-10 1985-12-02 Kureha Chem Ind Co Ltd 可撓性黒鉛シ−トの補強方法
EP0205970B1 (de) * 1985-05-30 1990-10-24 Research Development Corporation of Japan Verfahren zum Herstellen von Graphitfolien
JPS6291414A (ja) * 1985-06-28 1987-04-25 Res Dev Corp Of Japan グラファイトフィルムの製造方法
JPS6411498A (en) * 1987-07-03 1989-01-17 Japan Res Dev Corp Production of diaphragm
JPS6411499A (en) * 1987-07-03 1989-01-17 Japan Res Dev Corp Production of diaphragm

Also Published As

Publication number Publication date
EP0336448B1 (de) 1993-01-27
DE68904582D1 (de) 1993-03-11
EP0336448A2 (de) 1989-10-11
JPH01259698A (ja) 1989-10-17
US5043185A (en) 1991-08-27
EP0336448A3 (de) 1991-01-16
US5064019A (en) 1991-11-12

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

Owner name: RESEARCH DEVELOPMENT CORP. OF JAPAN, TOKIO/TOK, JP