JPS5612196A - Manufacture of diaphragm for loudspeaker - Google Patents

Manufacture of diaphragm for loudspeaker

Info

Publication number
JPS5612196A
JPS5612196A JP8722379A JP8722379A JPS5612196A JP S5612196 A JPS5612196 A JP S5612196A JP 8722379 A JP8722379 A JP 8722379A JP 8722379 A JP8722379 A JP 8722379A JP S5612196 A JPS5612196 A JP S5612196A
Authority
JP
Japan
Prior art keywords
base body
processing
diaphragm
vapor
nitriding
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.)
Pending
Application number
JP8722379A
Other languages
Japanese (ja)
Inventor
Masaji Watanabe
Hideyuki Irie
Masahiko Hirose
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8722379A priority Critical patent/JPS5612196A/en
Publication of JPS5612196A publication Critical patent/JPS5612196A/en
Pending 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 obtain an inexpensive loudspeaker diaphragm of superior characteristics by obtaining a diaphragm base body by vapor-depositing a metal on an auxiliary base body and then by performing the microwave plasma processing of it. CONSTITUTION:On an auxiliary base body made of a plastic film, etc., a metal such as titanium foil is vapor-deposited and then the auxiliary base body is removed by melting to obtain domed diaphragm base body 17 formed of only a vapor- deposited metal layer. Those base bodies 17 are arranged on the internal wall of quartz-made cylinder 16 in container 5 serving as the processing chamber of a microwave nitriding processor. Container 5 is evacuated and supplied with nitrogen gas and hydrogen gas at an adequate mixture ratio while fed with microwave electric power to produce plasma 25, performing the surface nitriding processing of each base body 17. In addition to the nitriding processing, the same diaphragm can be obtained by carbonization processing or boriding processing.
JP8722379A 1979-07-10 1979-07-10 Manufacture of diaphragm for loudspeaker Pending JPS5612196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8722379A JPS5612196A (en) 1979-07-10 1979-07-10 Manufacture of diaphragm for loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8722379A JPS5612196A (en) 1979-07-10 1979-07-10 Manufacture of diaphragm for loudspeaker

Publications (1)

Publication Number Publication Date
JPS5612196A true JPS5612196A (en) 1981-02-06

Family

ID=13908885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8722379A Pending JPS5612196A (en) 1979-07-10 1979-07-10 Manufacture of diaphragm for loudspeaker

Country Status (1)

Country Link
JP (1) JPS5612196A (en)

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