JPH0560170B2 - - Google Patents

Info

Publication number
JPH0560170B2
JPH0560170B2 JP60259564A JP25956485A JPH0560170B2 JP H0560170 B2 JPH0560170 B2 JP H0560170B2 JP 60259564 A JP60259564 A JP 60259564A JP 25956485 A JP25956485 A JP 25956485A JP H0560170 B2 JPH0560170 B2 JP H0560170B2
Authority
JP
Japan
Prior art keywords
base
disk
magnetic
annular groove
inner hole
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.)
Expired - Fee Related
Application number
JP60259564A
Other languages
English (en)
Japanese (ja)
Other versions
JPS62119730A (ja
Inventor
Kengo Ooishi
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP60259564A priority Critical patent/JPS62119730A/ja
Priority to US06/931,937 priority patent/US4781879A/en
Publication of JPS62119730A publication Critical patent/JPS62119730A/ja
Publication of JPH0560170B2 publication Critical patent/JPH0560170B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/8404—Processes or apparatus specially adapted for manufacturing record carriers manufacturing base layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/0046—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity
    • B29C2045/0049—Details relating to the filling pattern or flow paths or flow characteristics of moulding material in the mould cavity the injected material flowing against a mould cavity protruding part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Magnetic Record Carriers (AREA)
JP60259564A 1985-11-19 1985-11-19 磁気デイスクの製造方法 Granted JPS62119730A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP60259564A JPS62119730A (ja) 1985-11-19 1985-11-19 磁気デイスクの製造方法
US06/931,937 US4781879A (en) 1985-11-19 1986-11-18 Method of making a magnetic recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60259564A JPS62119730A (ja) 1985-11-19 1985-11-19 磁気デイスクの製造方法

Publications (2)

Publication Number Publication Date
JPS62119730A JPS62119730A (ja) 1987-06-01
JPH0560170B2 true JPH0560170B2 (en]) 1993-09-01

Family

ID=17335875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60259564A Granted JPS62119730A (ja) 1985-11-19 1985-11-19 磁気デイスクの製造方法

Country Status (2)

Country Link
US (1) US4781879A (en])
JP (1) JPS62119730A (en])

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2659385B2 (ja) * 1988-02-25 1997-09-30 日立マクセル株式会社 デイスクカートリツジ
US5254306A (en) * 1990-10-29 1993-10-19 Toyoda Gosei Co., Ltd. Method for making a double layer molded product using a dam in the mold cavity
SE505730C2 (sv) * 1994-03-31 1997-10-06 Volvo Ab Mekanism för låsning av en lucka samt förfarande för tillverkning av mekanismen
JP2887832B2 (ja) * 1994-04-15 1999-05-10 株式会社ニフコ スピーカーグリル及びその成形方法
US5688462A (en) * 1995-07-28 1997-11-18 The Dow Chemical Company In-runner polymer melt mixer
US5920943A (en) * 1995-08-17 1999-07-13 The Wooster Brush Company Paint brush with co-injection molded handle and method of making same
JP3042977B2 (ja) * 1995-10-26 2000-05-22 株式会社名機製作所 貼り合わせ型ディスクとその製造方法およびディスク成形装置
JPH09155986A (ja) * 1995-12-05 1997-06-17 Meiki Co Ltd 貼り合わせディスクおよびその製造装置ならびにその製造方法
JP3573893B2 (ja) * 1996-12-06 2004-10-06 日本電産株式会社 合成樹脂射出成形体及びファンモータ並びに射出成形方法
EP0956257A4 (en) * 1997-09-25 2000-12-13 Enviroreel Plastics L L C ONE-PIECE PLASTIC COIL WITH HIGH LOADING CAPACITY
US5833913A (en) * 1997-12-29 1998-11-10 Ford Global Technologies, Inc. Injection molding method forming strengthened weld line
US6287654B1 (en) * 1998-07-24 2001-09-11 Tdk Corporation Molding mold, injection molding apparatus including the molding mold, molding method using the molding mold, and product molded by the molding mold
JP2000345865A (ja) * 1999-06-07 2000-12-12 Mitsubishi Electric Corp 空気流量制御装置用スロットルバルブ
CA2443483C (en) * 2002-10-02 2011-08-16 Mold-Masters Limited Mixing device
DE102004009320A1 (de) * 2003-02-26 2004-11-18 Mold-Masters Ltd., Georgetown Heißläuferverteiler-Stopfen für einen rheologischen Ausgleich beim Heißläufer-Spritzgießen
JP4173053B2 (ja) * 2003-06-02 2008-10-29 株式会社エンプラス 射出成形樹脂歯車、射出成形樹脂スプロケット、射出成形樹脂プーリ、射出成形樹脂ローラ
US7614872B2 (en) * 2005-10-04 2009-11-10 Mold-Masters (2007) Limited Melt redistribution element for an injection molding apparatus
JP4618807B2 (ja) * 2006-06-07 2011-01-26 株式会社エンプラス 射出成形樹脂歯車
JP2008213393A (ja) * 2007-03-07 2008-09-18 Jtekt Corp 樹脂巻き部品
JP5180167B2 (ja) * 2009-09-04 2013-04-10 愛三工業株式会社 樹脂歯車及びスロットル装置
CN103358976A (zh) * 2013-07-19 2013-10-23 昆山拓安塑料制品有限公司 一种盘形的镀铝树脂注塑件及制造方法
JP5971270B2 (ja) * 2014-02-27 2016-08-17 トヨタ自動車株式会社 半導体装置の製造方法および製造装置
AT515836B1 (de) * 2014-06-11 2016-03-15 Zizala Lichtsysteme Gmbh Schließeinheit für eine Spritzgießmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880978A (en) * 1974-04-23 1975-04-29 Ford Motor Co Method for forming a remote annular rim of plastic material
JPS5772840A (en) * 1980-10-25 1982-05-07 Hitachi Ltd Mold for reactive injection molding
US4403933A (en) * 1982-04-14 1983-09-13 Fischer & Porter Company Apparatus for injection-molding a liner onto a metal spool

Also Published As

Publication number Publication date
US4781879A (en) 1988-11-01
JPS62119730A (ja) 1987-06-01

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