JPS6323236A - Structure of disk record - Google Patents
Structure of disk recordInfo
- Publication number
- JPS6323236A JPS6323236A JP62124864A JP12486487A JPS6323236A JP S6323236 A JPS6323236 A JP S6323236A JP 62124864 A JP62124864 A JP 62124864A JP 12486487 A JP12486487 A JP 12486487A JP S6323236 A JPS6323236 A JP S6323236A
- Authority
- JP
- Japan
- Prior art keywords
- protective layer
- layer
- disk substrate
- vinyl chloride
- disk
- 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.)
- Granted
Links
- 239000011241 protective layer Substances 0.000 claims abstract description 17
- 239000010410 layer Substances 0.000 claims abstract description 8
- 238000005299 abrasion Methods 0.000 claims description 4
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 abstract description 6
- 229920001296 polysiloxane Polymers 0.000 abstract description 3
- 238000009835 boiling Methods 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 229920002554 vinyl polymer Polymers 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 abstract 5
- 239000000203 mixture Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- -1 vinyl compound Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 （イ） 産業上の利用分野 本発明は光学式ディスクレコードの改良構造に関する。[Detailed description of the invention] (b) Industrial application fields The present invention relates to an improved structure for an optical disc record.
（ロ）従来の技術
光学式のレコードプレーヤにおいてレーザビームをディ
スクレコードに照射する場合、ディスク基台を通して照
射するものと、記録層の表面に形成した保護層を介して
照射するものとがあるが、前者のものの方が表面状態の
変化による影響を受、け難い利点があるとされている。(b) Conventional technology When a laser beam is irradiated onto a disc record in an optical record player, there are two methods: one is to irradiate the laser beam through the disc base, and the other is to irradiate it through a protective layer formed on the surface of the recording layer. It is said that the former type has the advantage of being less susceptible to changes in surface conditions.
例えば特公昭５２−３２９３１号公報（ＨＯ４Ｎ ５
／８４）には、透明のディスク基台の記録Ｒ側に記録】
を保護する第１の保Ｎ層を形成し、記録石側とは反対の
面よりレーザビームを照射せしめるビデオディスクレコ
ードが開示きれている。For example, Japanese Patent Publication No. 52-32931 (HO4N 5
/84) is recorded on the recording R side of the transparent disc base]
A video disk record has been disclosed in which a first N-protection layer is formed to protect the recording stone, and a laser beam is irradiated from the side opposite to the recording stone side.
（ハ）発明が解決しようとする問題点
しかし、この様な構成のディスクレコードであってもデ
ィスク基台の表面状態の影響は無視できず、たとえば５
０μｍ以上のクラッチ等が生じると信号のＳ／Ｎ比に大
きな影響を与える。これを防止するには基台表面の耐摩
耗性を向上序せなければならない、一方、ディスク基台
は気象変化並びにゴミ等の付着等による環境変化に基づ
きその表面が曇る傾向があるが、それに射して従来はそ
の曇りをその都度払拭する方法を採っていた。これでは
、その払拭作業時に基台表面を傷付けろおそれがあるし
、その作業自体が須瑣に絶えない。(c) Problems to be solved by the invention However, even with a disc record having such a configuration, the influence of the surface condition of the disc base cannot be ignored.
If a clutch or the like with a diameter of 0 μm or more occurs, it will greatly affect the S/N ratio of the signal. To prevent this, it is necessary to improve the wear resistance of the base surface.On the other hand, the surface of disk bases tends to become cloudy due to environmental changes such as weather changes and the adhesion of dust. Conventionally, the method used was to remove the cloudy surface each time. In this case, there is a risk that the surface of the base may be damaged during the wiping operation, and the wiping operation itself is incessant.
また、前述するディスクレコードの場合、一方のみ保護
１が形成きれるためディスクレコードの強度にアンバラ
ンスを生じてディスクレコードに反りを生じせしめる惧
れもあった。Furthermore, in the case of the above-mentioned disc record, since the protection 1 can only be formed on one side, there is a risk that the strength of the disc record will be unbalanced and the disc record will warp.
（ニ）問題点を解決するための手段
そこで、本発明はディスク基台の他面側（記録］とは反
射能の面に耐摩ハ性に関して前記ディスク基台に比して
秀れた第２の保護１を形成することを特徴とする。(d) Means for Solving the Problems Therefore, the present invention provides a second surface of the disk base which is superior to the disk base in terms of abrasion resistance on the other side (recording) of the disk base. It is characterized by forming protection 1 of.
（ホ）作用
よって、本発明によれば、ディスク基台の両面が保護層
によって保護される。(e) According to the present invention, both sides of the disc base are protected by the protective layer.
くへ）実施例 以下、本発明を図示せる実施例に従い説明する。Kuhe) Examples The present invention will be described below with reference to illustrative embodiments.
図は本発明の１実施例の断面図を示したものである。（
１〉は透明なディスク基台であり、それは塩化ビニール
にて成型きれその厚みは約１閾である。このディスク基
台の１面には濁知の方法によって信号記録１（２）が形
成され、更にこの記録泗を保護する為の第１の保護１Ｎ
（３）が形成されている。一方このディスク基台の他面
には、該基台の素材である塩化ビニールに比し、防曇性
及び耐摩耗性の項目において秀れた第２の保護層（４）
を形成する。この保護層は、たとえば樹脂状シリコンを
有機溶媒で溶かしたものに硬質塩化ビニールを重量比で
約３０％混合してなる溶液を前記ディスク基台に約１０
０μｍの層厚となるように塗布して構成される。この保
護層はその表面の硬度が鉛筆硬度で３Ｈ程度であり、ま
たその防曇性はこの保護層を沸騰する水蒸気にあてがっ
てもその付着が認められないものであった。The figure shows a cross-sectional view of one embodiment of the present invention. (
1> is a transparent disk base, which is molded from vinyl chloride and has a thickness of about 1 threshold. A signal record 1 (2) is formed on one side of this disk base by the method of Nakuchi, and a first protection 1N is further formed to protect this record receptacle.
(3) is formed. On the other hand, the other side of this disc base is coated with a second protective layer (4) that is superior in terms of anti-fog and abrasion resistance compared to vinyl chloride, which is the material of the base.
form. This protective layer is made by applying a solution of about 30% by weight of hard vinyl chloride to resinous silicone dissolved in an organic solvent, for example, and applying it to the disk base for about 10 minutes.
It is constructed by coating to a layer thickness of 0 μm. The surface hardness of this protective layer was approximately 3H on a pencil hardness scale, and its antifogging properties were such that no adhesion was observed even when the protective layer was exposed to boiling water vapor.
（ト） 発明の効果
叙上の如く本＊施例はレーザビームの出入するディスク
基台の表面に防曇性と耐摩耗性の両性質を兼ねた保ＭＭ
、特にシリコン化合物とビニール化合物の混合樹脂から
なる保護層を構成したので、防曇性及び耐摩耗性に秀れ
たディスクレコードを得ることができ実用的である。(g) Effects of the invention As mentioned above, this *embodiment uses a protective MM that has both anti-fog and wear-resistant properties on the surface of the disk base through which the laser beam enters and exits.
In particular, since the protective layer is made of a mixed resin of a silicon compound and a vinyl compound, it is possible to obtain a disc record with excellent antifogging properties and wear resistance, which is practical.
また、本実施例では第２の保護層が耐摩耗性を有すると
共に十分な強度を有しており、第１の保護層形成に伴う
反りを軽減又は防止する効果もある。Furthermore, in this example, the second protective layer has abrasion resistance and sufficient strength, and has the effect of reducing or preventing warping caused by the formation of the first protective layer.
図は本発明の一実施例を示す断面図である。 The figure is a sectional view showing one embodiment of the present invention.
Claims (1)
該信号記録層上に第１の保護層を形成するディスクレコ
ードに於て、 前記ディスク基台の他面に払拭に対する耐摩耗性に関し
て前記ディスク基台に比して秀れた第２の保護層を形成
して成るディスクレコードの構造。(1) A signal recording layer is provided on one side of a transparent disc base,
In a disc record in which a first protective layer is formed on the signal recording layer, a second protective layer superior to the disc base in terms of abrasion resistance against wiping is provided on the other surface of the disc base. The structure of a disk record made up of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62124864A JPS6323236A (en) | 1987-05-21 | 1987-05-21 | Structure of disk record |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62124864A JPS6323236A (en) | 1987-05-21 | 1987-05-21 | Structure of disk record |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6323236A true JPS6323236A (en) | 1988-01-30 |
| JPH0330217B2 JPH0330217B2 (en) | 1991-04-26 |
Family
ID=14895986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62124864A Granted JPS6323236A (en) | 1987-05-21 | 1987-05-21 | Structure of disk record |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6323236A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156605A (en) * | 1976-06-18 | 1977-12-27 | Thomson Brandt | Data carrier and method of producing same |
| JPS54179104U (en) * | 1978-06-07 | 1979-12-18 | ||
| JPS5724042A (en) * | 1980-07-18 | 1982-02-08 | Sony Corp | Optical information recording medium and its production |
-
1987
- 1987-05-21 JP JP62124864A patent/JPS6323236A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52156605A (en) * | 1976-06-18 | 1977-12-27 | Thomson Brandt | Data carrier and method of producing same |
| JPS54179104U (en) * | 1978-06-07 | 1979-12-18 | ||
| JPS5724042A (en) * | 1980-07-18 | 1982-02-08 | Sony Corp | Optical information recording medium and its production |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330217B2 (en) | 1991-04-26 |
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