JPS57148494A - Manufacturing method of diaphragm for speaker - Google Patents

Manufacturing method of diaphragm for speaker

Info

Publication number
JPS57148494A
JPS57148494A JP3474781A JP3474781A JPS57148494A JP S57148494 A JPS57148494 A JP S57148494A JP 3474781 A JP3474781 A JP 3474781A JP 3474781 A JP3474781 A JP 3474781A JP S57148494 A JPS57148494 A JP S57148494A
Authority
JP
Japan
Prior art keywords
base body
diaphragm
coating layer
magnesium
lithium alloy
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
JP3474781A
Other languages
Japanese (ja)
Inventor
Fumio Hayakawa
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.)
Onkyo Corp
Original Assignee
Onkyo 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 Onkyo Corp filed Critical Onkyo Corp
Priority to JP3474781A priority Critical patent/JPS57148494A/en
Publication of JPS57148494A publication Critical patent/JPS57148494A/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 simplify the forming process of the diaphragm, by forming a coating layer of a magnesium-lithium alloy on the surface of a base body which is formed into a dome type diaphragm from a prescribed metal and by exfoliating the coating layer and making the required thickness approximately uniform. CONSTITUTION:A base body 2 is formed from glass, quarts, a silicon compound, a ceramic, or a metal, such as tungsten, molybdenum, tantalum, etc., and the base body 2 is placed in vacuum deposition equipment. Then, a coating layer 1 of a magnesium-lithium alloy is formed on the surface of the base body 2 by a vacuum deposition method. Then the coating layer 1 is gradually cooled to the temperature of the base body 2 and the deposited coating layer 1 of the magnesium-lithium alloy is completely exfoliated from the base body 2, and thus, the required thickness of the diaphragm is made almost uniformly. Thus the forming process of the diaphragm is simplified.
JP3474781A 1981-03-10 1981-03-10 Manufacturing method of diaphragm for speaker Pending JPS57148494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3474781A JPS57148494A (en) 1981-03-10 1981-03-10 Manufacturing method of diaphragm for speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3474781A JPS57148494A (en) 1981-03-10 1981-03-10 Manufacturing method of diaphragm for speaker

Publications (1)

Publication Number Publication Date
JPS57148494A true JPS57148494A (en) 1982-09-13

Family

ID=12422912

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3474781A Pending JPS57148494A (en) 1981-03-10 1981-03-10 Manufacturing method of diaphragm for speaker

Country Status (1)

Country Link
JP (1) JPS57148494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694039B1 (en) * 2003-01-21 2004-02-17 Meiloon Industrial Co., Ltd. Loudspeaker

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113723A (en) * 1976-03-22 1977-09-24 Foster Electric Co Ltd Electroacoustic transducer vibrator plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52113723A (en) * 1976-03-22 1977-09-24 Foster Electric Co Ltd Electroacoustic transducer vibrator plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6694039B1 (en) * 2003-01-21 2004-02-17 Meiloon Industrial Co., Ltd. Loudspeaker

Similar Documents

Publication Publication Date Title
EP0371854A3 (en) Method for selectively depositing refractory metal on semiconductor substrates
WO1998050599A3 (en) Quartz glass component for a reactor housing and method for its production and application
GB1509077A (en) Metallic iris diaphragms for corpuscular beam apparatus and to methods of manufacture of such diaphragms
JPS57148494A (en) Manufacturing method of diaphragm for speaker
JPS57155365A (en) Method of forming silicon carbide film excellent in adhesion on metal substrate surface
US4887548A (en) Thin film manufacturing system
US2554237A (en) Rectifier
JPH04154634A (en) Mold for optical element formation and its production
JPS6473717A (en) Selective deposition of metal
JPH0429612B2 (en)
JPS6236089A (en) Manufacture of ceramic product
JPS56111560A (en) Die parts for die cast molding
JPS6476736A (en) Manufacture of semiconductor device
JP2962905B2 (en) Method for manufacturing glass optical element molding die
GB1177302A (en) Improvements in or relating to Grid Electrodes
JPH0329012B2 (en)
KR850004243A (en) Mold for direct press molding of optical glass elements
JPS63151628A (en) Mold for forming optical element
KR200255605Y1 (en) PVD reactor provided with passivation layer over shielding side
JPH01119664A (en) Sputtering device
JPS6350320B2 (en)
KR970018395A (en) Metal wiring layer formation method
JPS5623271A (en) Armoring parts for watch
JPS61104077A (en) Formation of boron film
Schafer Pretreatment of FeCoNi-Alloys for Chemical Nickeling