JPH02118980A - 光記録媒体 - Google Patents

光記録媒体

Info

Publication number
JPH02118980A
JPH02118980A JP63269847A JP26984788A JPH02118980A JP H02118980 A JPH02118980 A JP H02118980A JP 63269847 A JP63269847 A JP 63269847A JP 26984788 A JP26984788 A JP 26984788A JP H02118980 A JPH02118980 A JP H02118980A
Authority
JP
Japan
Prior art keywords
optical recording
recording medium
disk
center
clamping
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
JP63269847A
Other languages
English (en)
Inventor
Takashi Hayashi
隆史 林
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson 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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP63269847A priority Critical patent/JPH02118980A/ja
Publication of JPH02118980A publication Critical patent/JPH02118980A/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/601—Riveting or staking using extra riveting elements, i.e. the rivets being non-integral with the parts to be joined
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B29C66/81429—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth comprising a single tooth
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81463—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a plurality of single pressing elements, e.g. a plurality of sonotrodes, or comprising a plurality of single counter-pressing elements, e.g. a plurality of anvils, said plurality of said single elements being suitable for making a single joint
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/843—Machines for making separate joints at the same time in different planes; Machines for making separate joints at the same time mounted in parallel or in series
    • B29C66/8432—Machines for making separate joints at the same time mounted in parallel or in series
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • B29L2017/005—CD''s, DVD''s

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、Ｄ　ＲＡＷディスクやに−ＤＲＡＷディスク
等の光記録媒体に関する。
［発明の概要］ 本発明は、ＤＲＡＷディスクやに−ＤＲＡＷディスク等
で、中心にクランプ用ハブを有する光記録媒体において
、クランプ用ハブの接合を、熱もしくは超音波によるか
しめで行うことにより、クランプ用ハブ接合時の位置合
せを容易にし、クランプ用ハブ中心とディスクグループ
中心との偏芯を小さ（抑えるとともに、クランプ用ハブ
の接合強度を高め、光記録媒体内周部の光学特性の低ｒ
ヒを防ぎ、生産性を著しく向上させるものである。
［従来の技術］ 従来のＤＲＡＷディスクやに−ＤＲＡＷディスク等で中
心にクランプ用ハブを有する光記録媒体の製造は、まず
アクリル樹脂、ポリカーボネート樹脂等の透明熱可塑性
樹脂を用いて射出成形により表面にグループまたはピッ
トを有するディスク基板をつくる。
この表面に光記録メディアをスピンフートあるいはスパ
ッタリングあるいは真空蒸着等で成戻した後、ディスク
の貼り合せなＵＶ接着剤等を用いて行い、最後に中心部
に、接着あるいは熱融着あるいは超音波溶着でクランプ
用ノ・プな取シ付けるが、グループ中心との位置合せは
、中心穴ガイドあるいはグループまたはピットを画像処
理してノ・ブの中心と合せる方法が行われている。
［発明が解決しようとする課題］ しかし、前述の従来技術ではディスク中心穴へのクラン
プ用ハブ取υ付けにおいて、中心穴ガイドの場合、グル
ープまたはピント中心に対する射出成形型内で打ち抜か
れるディスク内径中心の偏芯、ガタの発生等により接合
されたクランプ用・・ブの偏芯は大きく、傾きも出る傾
向にあった。
偏芯な小さ（するために、画像処理により位置決めする
装置を用いてクランプ用）・プ位置合せを行う方法も検
討されているが、装置コストが著しく高（、生産性も著
しく低いものである。
また、クランプ用）・ブの接合強度も充分とはいえず、
クランプ用ノ・ブのはがれの原因となっていた。
さらに、熱融着及び超音波溶着では、溶着部に大きなひ
ずみを残し、光記録媒体内周部の光学特性の低下を起こ
していた。
［課題を解決するための手段］ 本発明の光記録媒体は、クランプ用ノ・プの接合を、熱
もしくは超音波によるかしめで行うことを特徴とする。
［作用］ 本発明によれば、メディアディスクとクランプ用ハフの
接合を熱もしくは超音波によるかしめで行うことにより
、ディスクとクランプ用ノ・ブの位置合せが容易に行え
、偏芯を小さ（するとともに、クランプ用）・プの接合
強度を高め、ディスク内周部の光学特性の低下を防ぎ、
生産性を著しく向上させ得る。
［実施例］ 第１図及び第２図は、本発明の実施例の光記録媒体の構
造及び製造工程を説明するための断面図である。
第１図において、光記録ディスクは例えばポリカーボネ
ート樹脂を用いて射出成形により製作された基板１にメ
ディア付けを行った後、保護用のディスク２を接着剤で
貼り合せたものである。
この光記録ディスクは内周部にかしめのための凸部１α
を有する。この凸部１αは成形時に同時に形成されるも
ので、成形金型を加工する事で容易に付加する事が出来
、記録グループまたはピッドに対する位置関係も精度良
く一定の範囲内に管理する事が可能である。
この光記録ディスクに対応するクランプ用ハフ４はメタ
ル単体あるいはメタルインサートプラスチックあるいは
プラスチック磁石あるいはメタルコンパウンド樹脂等で
ある。メタル単体ノ・プは切削加工もしくは型鍛造で容
易にそして精度良く加工できる。メタルインサートノ＼
プ、プラスチック磁石ハブ及びメタルコンパウンド樹脂
ハブも射出成形や押し出し成形により容易に精度良（製
作できる。
これらのディスクとクランプ用ハブ４の接合はディスク
の凸部１ａをかしめ部として行われる。
第１図は、ディスクの凸部１ａにクランプ用ハフ４を挿
入し、ディスクの凸部１αの先端に超音波振動をする金
属体（ホーン）５を接触させ、かしめを行う例である。
この様にディスクとクランプ用ハブの接合を超音波によ
るかしめで行った光記録媒体の偏芯精度は２０μｍ以下
に安定して抑えることが可能となり、クランプ用ハブと
メディアデイ、各りの接合強度も高まり、生産性も著し
く向上した。
また、光記録媒体内周部はクランプ用ハブ接合時の熱や
ひずみの影響を受けることな（、光学特性も接合前後で
低下は見られなかった。
さらに熱によるかしめで接合を行った場合も前記と同様
なことは言うまでもない。
［発明の効果］ 以上述べたように本発明によれば、中心にクランプ用ハ
ブを有する光記録媒体において、クランプ用ハブの接合
を、熱もしくは超音波によるかしめで行うことにより、
クランプ用ハブ接合時の位置合せを容易にし、クランプ
用ハブ中心とディスクグループ中心との偏芯を小さく抑
えるとともに、クランプ用ハブの接合強度を高め、光記
録媒体内周部の光学特性の低下を防ぎ、生産性を著しく
向上させる効果がある。
【図面の簡単な説明】
第１図、第２図は本発明の光記録媒体の構成を示す断面
図。 １・・・・・・・・・メディアディスク１ａ・・・・・
・かしめのための凸部 ２・・・・・・・・・保護用ディスク ３・・・−・・・・・記録層及び接着層４・・・・・・
・・クランプ用ハフ ５・・・・・・・・・ホーン

Claims (2)

    【特許請求の範囲】
  1. （１）中心にクランプ用ハブを有する光記録媒体におい
    て、クランプ用ハブの接合を、熱もしくは超音波による
    かしめで行うことを特徴とする光記録媒体。
  2. （２）クランプ用ハブの材料が、メタル単体あるいはメ
    タルインサートプラスチックあるいはプラスチック磁石
    あるいはメタルコンパウンド樹脂であることを特徴とす
    る請求項１記載の光記録媒体。
JP63269847A 1988-10-26 1988-10-26 光記録媒体 Pending JPH02118980A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63269847A JPH02118980A (ja) 1988-10-26 1988-10-26 光記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63269847A JPH02118980A (ja) 1988-10-26 1988-10-26 光記録媒体

Publications (1)

Publication Number Publication Date
JPH02118980A true JPH02118980A (ja) 1990-05-07

Family

ID=17478021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63269847A Pending JPH02118980A (ja) 1988-10-26 1988-10-26 光記録媒体

Country Status (1)

Country Link
JP (1) JPH02118980A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8575481B2 (en) 2008-12-18 2013-11-05 Nec Corporation Electronic apparatus storing container and method for assembling electronic apparatus storing container

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8575481B2 (en) 2008-12-18 2013-11-05 Nec Corporation Electronic apparatus storing container and method for assembling electronic apparatus storing container

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