IT1238069B - Procedimento per la preparazione di un diaframma completamente di carbonio da usare in apparecchiature acustiche - Google Patents

Procedimento per la preparazione di un diaframma completamente di carbonio da usare in apparecchiature acustiche

Info

Publication number
IT1238069B
IT1238069B IT01910790A IT1910790A IT1238069B IT 1238069 B IT1238069 B IT 1238069B IT 01910790 A IT01910790 A IT 01910790A IT 1910790 A IT1910790 A IT 1910790A IT 1238069 B IT1238069 B IT 1238069B
Authority
IT
Italy
Prior art keywords
procedure
preparation
acoustic equipment
carbon diaphragm
completely carbon
Prior art date
Application number
IT01910790A
Other languages
English (en)
Other versions
IT9019107A0 (it
IT9019107A1 (it
Original Assignee
Mitsubishi Pencil Co
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 Mitsubishi Pencil Co filed Critical Mitsubishi Pencil Co
Publication of IT9019107A0 publication Critical patent/IT9019107A0/it
Publication of IT9019107A1 publication Critical patent/IT9019107A1/it
Application granted granted Critical
Publication of IT1238069B publication Critical patent/IT1238069B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
    • C04B35/528—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components
    • C04B35/532—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite obtained from carbonaceous particles with or without other non-organic components containing a carbonisable binder
    • 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)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Ceramic Products (AREA)
IT01910790A 1989-01-20 1990-01-19 Procedimento per la preparazione di un diaframma completamente di carbonio da usare in apparecchiature acustiche IT1238069B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1009976A JPH02243097A (ja) 1989-01-20 1989-01-20 全炭素質音響機器用振動板の製造法

Publications (3)

Publication Number Publication Date
IT9019107A0 IT9019107A0 (it) 1990-01-19
IT9019107A1 IT9019107A1 (it) 1990-07-21
IT1238069B true IT1238069B (it) 1993-07-03

Family

ID=11734943

Family Applications (1)

Application Number Title Priority Date Filing Date
IT01910790A IT1238069B (it) 1989-01-20 1990-01-19 Procedimento per la preparazione di un diaframma completamente di carbonio da usare in apparecchiature acustiche

Country Status (6)

Country Link
US (1) US5152938A (it)
JP (1) JPH02243097A (it)
DE (1) DE4001059A1 (it)
FR (1) FR2642254A1 (it)
GB (1) GB2229338A (it)
IT (1) IT1238069B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001160998A (ja) * 1999-12-01 2001-06-12 Mitsubishi Pencil Co Ltd 圧電発音体用振動板とその製造方法
JP3948000B2 (ja) * 2003-08-26 2007-07-25 松下電器産業株式会社 高熱伝導性部材及びその製造方法ならびにそれを用いた放熱システム
US20070187171A1 (en) * 2006-01-27 2007-08-16 Victor Company Of Japan, Limited Production method of an acoustic diaphragm, acoustic diaphragm, and a speaker
US8122996B2 (en) * 2006-12-22 2012-02-28 Panasonic Corporation Diaphragm for speaker, frame for speaker, dust cap for speaker, speaker and apparatus using them, and method for manufacturing component for speaker
CN105431489B (zh) * 2013-07-31 2018-06-08 日产化学工业株式会社 碳材料分散膜形成用组合物
US9676631B2 (en) 2014-07-21 2017-06-13 Lori Bracamonte Reaction bonded silicon carbide bodies made from high purity carbonaceous preforms
CN111423244A (zh) * 2020-03-27 2020-07-17 深圳市威泽科技有限公司 一种耳机使用的碳素材料及制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5546661A (en) * 1978-09-29 1980-04-01 Pioneer Electronic Corp Diaphragm for acoustic apparatus and its manufacture
JPS56103244A (en) * 1980-12-29 1981-08-18 Pioneer Electronic Corp Molding material
JPS5821997A (ja) * 1981-07-31 1983-02-09 Pioneer Electronic Corp スピ−カ用振動板
JPS59191779A (ja) * 1983-04-15 1984-10-30 Mitsubishi Pencil Co Ltd 鉛筆芯の製造方法
JPS60210097A (ja) * 1984-04-03 1985-10-22 Totoku Electric Co Ltd 耐熱ボイスコイルの製造法
JPS61151282A (ja) * 1984-12-25 1986-07-09 Mitsubishi Pencil Co Ltd 鉛筆芯の製造方法
JPH0720312B2 (ja) * 1985-04-15 1995-03-06 三菱鉛筆株式会社 音響機器用振動板の製造法
JPS63171100A (ja) * 1987-01-09 1988-07-14 Mitsubishi Pencil Co Ltd 全炭素質スピ−カ−用振動板の製造方法
JPS63175600A (ja) * 1987-01-16 1988-07-19 Mitsubishi Pencil Co Ltd 全炭素質音響機器用振動板の製造方法
US5149470A (en) * 1988-08-24 1992-09-22 Mitsubishi Pencil Co., Ltd. Method of making a diaphragm of carbonaceous material

Also Published As

Publication number Publication date
US5152938A (en) 1992-10-06
IT9019107A0 (it) 1990-01-19
GB2229338A (en) 1990-09-19
IT9019107A1 (it) 1990-07-21
GB9001165D0 (en) 1990-03-21
FR2642254A1 (fr) 1990-07-27
DE4001059A1 (de) 1990-08-09
DE4001059C2 (it) 1992-07-30
JPH02243097A (ja) 1990-09-27

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Legal Events

Date Code Title Description
0001 Granted