JPS52141627A - Vibrating plate and its production - Google Patents

Vibrating plate and its production

Info

Publication number
JPS52141627A
JPS52141627A JP5777376A JP5777376A JPS52141627A JP S52141627 A JPS52141627 A JP S52141627A JP 5777376 A JP5777376 A JP 5777376A JP 5777376 A JP5777376 A JP 5777376A JP S52141627 A JPS52141627 A JP S52141627A
Authority
JP
Japan
Prior art keywords
vibrating plate
production
cofficient
elasticity
density
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
JP5777376A
Other languages
Japanese (ja)
Other versions
JPS5546111B2 (en
Inventor
Toshio Haneda
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5777376A priority Critical patent/JPS52141627A/en
Publication of JPS52141627A publication Critical patent/JPS52141627A/en
Publication of JPS5546111B2 publication Critical patent/JPS5546111B2/ja
Granted 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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

PURPOSE:To make (cofficient of elasticity/density)<1>/<2> of a sound instrument vibrating plate larger than that of a Be made vibrating plate by means of using specific hard carbon with the specific gravity of 1.4 - 1.6 for the vibrating plate.
JP5777376A 1976-05-21 1976-05-21 Vibrating plate and its production Granted JPS52141627A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5777376A JPS52141627A (en) 1976-05-21 1976-05-21 Vibrating plate and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5777376A JPS52141627A (en) 1976-05-21 1976-05-21 Vibrating plate and its production

Publications (2)

Publication Number Publication Date
JPS52141627A true JPS52141627A (en) 1977-11-26
JPS5546111B2 JPS5546111B2 (en) 1980-11-21

Family

ID=13065178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5777376A Granted JPS52141627A (en) 1976-05-21 1976-05-21 Vibrating plate and its production

Country Status (1)

Country Link
JP (1) JPS52141627A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463170A1 (en) * 1990-01-17 1992-01-02 Osaka Gas Co., Ltd. Process for producing a carbon film

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463170A1 (en) * 1990-01-17 1992-01-02 Osaka Gas Co., Ltd. Process for producing a carbon film
EP0463170A4 (en) * 1990-01-17 1992-12-09 Osaka Gas Company Limited Process for producing carbonaceous composite material containing carbon film, molding base material, and carbon film
US5326510A (en) * 1990-01-17 1994-07-05 Osaka Gas Company Limited Carbon composite material incorporating carbon film, forming material and process for producing the carbon film

Also Published As

Publication number Publication date
JPS5546111B2 (en) 1980-11-21

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