JPS5612193A - Diaphragm for loudspeaker - Google Patents

Diaphragm for loudspeaker

Info

Publication number
JPS5612193A
JPS5612193A JP8721979A JP8721979A JPS5612193A JP S5612193 A JPS5612193 A JP S5612193A JP 8721979 A JP8721979 A JP 8721979A JP 8721979 A JP8721979 A JP 8721979A JP S5612193 A JPS5612193 A JP S5612193A
Authority
JP
Japan
Prior art keywords
base body
processing
diaphragm
container
gas
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
JP8721979A
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 JP8721979A priority Critical patent/JPS5612193A/en
Publication of JPS5612193A publication Critical patent/JPS5612193A/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

Abstract

PURPOSE:To attain efficient processing and also to improve characteristics by performing microwave plasma carbonization processing of a metallic base body formed in a diaphragm shape. CONSTITUTION:Domed diaphragm base body 17 made of titanium, stainless steel, aluminum, etc., are arranged on the internal wall of quartz-made cylinder 16 in container 5 as the processing chamber of a microwave plasma carbonization processor. Container 5 is evacuated and then supplied with Ar gas and CH4 gas at an adequate mixing ratio while fed with microwave electric power so as to produce plasma 25, performing the surface carbonization processing of each base body 17.
JP8721979A 1979-07-10 1979-07-10 Diaphragm for loudspeaker Pending JPS5612193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8721979A JPS5612193A (en) 1979-07-10 1979-07-10 Diaphragm for loudspeaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8721979A JPS5612193A (en) 1979-07-10 1979-07-10 Diaphragm for loudspeaker

Publications (1)

Publication Number Publication Date
JPS5612193A true JPS5612193A (en) 1981-02-06

Family

ID=13908789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8721979A Pending JPS5612193A (en) 1979-07-10 1979-07-10 Diaphragm for loudspeaker

Country Status (1)

Country Link
JP (1) JPS5612193A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6262867U (en) * 1985-10-11 1987-04-18
JPS62126277U (en) * 1986-01-31 1987-08-11

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6262867U (en) * 1985-10-11 1987-04-18
JPH0248072Y2 (en) * 1985-10-11 1990-12-17
JPS62126277U (en) * 1986-01-31 1987-08-11

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