JPS6118264B2 - - Google Patents
Info
- Publication number
- JPS6118264B2 JPS6118264B2 JP8475577A JP8475577A JPS6118264B2 JP S6118264 B2 JPS6118264 B2 JP S6118264B2 JP 8475577 A JP8475577 A JP 8475577A JP 8475577 A JP8475577 A JP 8475577A JP S6118264 B2 JPS6118264 B2 JP S6118264B2
- Authority
- JP
- Japan
- Prior art keywords
- reflective film
- film
- protective film
- reflective
- adhesion
- 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
Links
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000001704 evaporation Methods 0.000 claims 1
- 230000008020 evaporation Effects 0.000 claims 1
- 238000001771 vacuum deposition Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 26
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- -1 and here Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
Landscapes
- Manufacturing Optical Record Carriers (AREA)
Description
【発明の詳細な説明】
本発明は光学再生を行う情報記録体に反射膜を
形成する方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of forming a reflective film on an information recording medium for optical reproduction.
従来、光学的な再生を行う情報記録担体は、表
面に転写された微小な凹凸面上にレザー光などを
照射し、その反射光の光量変化で信号検出するも
のである。その反射面は、全属薄膜を蒸着法ある
いはスパツタリング法などにより形成されるがこ
の金属薄膜は非常に軟かい為さらに表面に保護膜
を被覆させている。しかしこれらの金属反射膜面
は平滑であり、保護膜との密着力が小さいという
欠点がある。 Conventionally, information recording carriers that perform optical reproduction irradiate laser light or the like onto a microscopic uneven surface transferred onto the surface, and detect a signal based on changes in the amount of reflected light. The reflective surface is formed by a metal thin film by vapor deposition or sputtering, but since this metal thin film is very soft, the surface is further coated with a protective film. However, the surface of these metal reflective films is smooth and has a drawback that adhesion to the protective film is low.
光学的再生を行なう情報担体（以下デイスクと
いう）は塩化ビニールなどのプラスチツク表面に
微小な凹凸部を形成している。これらに高い反射
率を示す金属、例えばアルミニウム、銀などの物
質を真空蒸着あるいはスパツタリング法で反射膜
をつくりこの反射光の変化で信号検出している。 An information carrier (hereinafter referred to as a disk) that performs optical reproduction is made of plastic such as vinyl chloride with minute irregularities formed on its surface. A reflective film is formed on these by vacuum evaporation or sputtering using a metal that exhibits high reflectance, such as aluminum or silver, and signals are detected based on changes in the reflected light.
しかしこれらの反射膜は、非常に軟かく、再生
時、運般時において損傷を受け、この損傷はすべ
てドロツプアウトの原因となる。実際のデイスク
では、透明なプラスチツクを使用し、反射膜は合
成樹脂などで被覆させ、反射光を裏面から取り出
すようにしている。ところが金属反射報を反射率
を上げる為に高真空中で蒸着を行なうと表面は鏡
面となり、逆に保護膜との密着力を小さくしてい
ることになる。 However, these reflective films are very soft and can be damaged during playback or transport, and all of this damage causes dropouts. In actual disks, transparent plastic is used, and the reflective film is coated with synthetic resin, etc., so that the reflected light is extracted from the back side. However, when vapor deposition is performed in a high vacuum to increase the reflectance of metal reflection signals, the surface becomes a mirror surface, which conversely reduces the adhesion with the protective film.
本発明は上記の欠点を解消するために成された
ものである。 The present invention has been made in order to eliminate the above-mentioned drawbacks.
本発明は光学的な再生を行なう情報記録担体の
表面に反射膜を形成する工程において、情報面に
は従来の反射効果を持たせ、保護膜との接触面で
は表面積を大きくすることにより、保護膜との密
着力を向上させることを目的とした反射膜の形成
方法を提供するものである。この目的を達成する
ために本発明は反射膜の作製時において、高い反
射率を示す金属（アルミニウム、銀など）を高真
空中で蒸着を行なう工程で、情報面の微小な凹凸
部に対しては忠実な反射膜層をつくり、保護膜と
の接触面では保護膜との密着力を強化させる目的
で高真空中から低真空状態に変化させて蒸着して
いる。 In the process of forming a reflective film on the surface of an information recording carrier for optical reproduction, the present invention provides a conventional reflective effect on the information surface and increases the surface area of the surface in contact with the protective film to provide protection. The present invention provides a method for forming a reflective film for the purpose of improving adhesion to the film. In order to achieve this objective, the present invention uses a process in which metals (aluminum, silver, etc.) exhibiting high reflectivity are vapor-deposited in a high vacuum during the production of a reflective film, and is applied to minute irregularities on the information surface. creates a faithful reflective film layer, and on the contact surface with the protective film, it is deposited under a state of low vacuum from high vacuum in order to strengthen the adhesion with the protective film.
即ち連続的に粒径を変えた反射膜を形成するよ
うにしている。 In other words, a reflective film is formed in which the particle size is continuously changed.
以下本発明による一実施例を説明しよう。 An embodiment according to the present invention will be described below.
デイスク表面を水、アルコール等でよく洗浄し
た後、蒸着器内に取付ける。排気は１〜５×
10-6Torrまで行ない、タングステンボートから
アルミニウムを蒸発させる。この時、膜厚が400
〜500Åに達した直後、不活性ガス（アルゴン、
ヘリウム）を器内へ導入し、真空度を１×
10-3Torr付近まで下げる。この状態で膜を厚さ
2000Å位まで形成させたならば蒸着を終了する。
得られたデイスクの反射膜表面は粒子径の大きい
粗面となるが一方の情報面に接する初期蒸着層
は、粒子の小さい、密な、従来と同じ高反射率の
面となる。 After thoroughly cleaning the disk surface with water, alcohol, etc., install it in the evaporator. Exhaust is 1~5x
Evaporate aluminum from tungsten boats at temperatures as low as 10 -6 Torr. At this time, the film thickness is 400
Immediately after reaching ~500 Å, inert gas (argon,
Helium) was introduced into the chamber, and the degree of vacuum was increased to 1×.
Lower it to around 10 -3 Torr. In this state, the thickness of the film is
The vapor deposition is completed when the thickness is about 2000 Å.
The surface of the reflective film of the disk obtained is a rough surface with large particles, but the initially deposited layer in contact with one of the information surfaces has small particles, is dense, and has the same high reflectance as the conventional disk.
保護膜に使用する樹脂は、デイスク材を溶かす
ことのない希釈液を使用することが望ましく、こ
こではポリビニルアルコールを水で溶解して用い
ている。 As the resin used for the protective film, it is desirable to use a diluted solution that does not dissolve the disk material, and here, polyvinyl alcohol is dissolved in water and used.
デイスクを回転しながら上記の樹脂液を均一な
厚さで塗布し、常温で硬化させる。この方法で作
製した場合、反射膜と保護膜との密着性は従来の
反射膜によるものに比較して２〜３倍程度の密着
力が得られる。 While rotating the disk, apply the above resin liquid to a uniform thickness and harden it at room temperature. When produced by this method, the adhesion between the reflective film and the protective film is about 2 to 3 times that of a conventional reflective film.
以上説明したように、本発明においては、情報
面では従来の反射率をそのまゝ保持し、保護膜と
の接触面は粗らい面と成し、接触面積増大を計つ
たので、本発明によれば保護膜との密着力を強化
することができるという効果が得られる。 As explained above, in the present invention, the conventional reflectance is maintained as is on the information side, and the contact surface with the protective film is formed into a rough surface to increase the contact area. Accordingly, the effect of strengthening the adhesion with the protective film can be obtained.
Claims (1)
を形成する工程において、蒸着時の真空度を連続
的に変化させて、保護膜との接触面を粒子径の大
きい粗面と成し、接触面積増大を計ることによ
り、該反射膜を保護するために形成する該保護膜
との密着力を強化することを特徴とする情報記録
体の反射膜作製方法。1. In the process of forming a reflective film on the surface of an information recording medium using a vacuum evaporation method, the degree of vacuum during evaporation is continuously changed to make the contact surface with the protective film a rough surface with large particle diameters. A method for producing a reflective film for an information recording medium, characterized in that the adhesion to a protective film formed to protect the reflective film is strengthened by increasing the area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8475577A JPS5420702A (en) | 1977-07-15 | 1977-07-15 | Method of producing information record reflecting film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8475577A JPS5420702A (en) | 1977-07-15 | 1977-07-15 | Method of producing information record reflecting film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5420702A JPS5420702A (en) | 1979-02-16 |
| JPS6118264B2 true JPS6118264B2 (en) | 1986-05-12 |
Family
ID=13839492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8475577A Granted JPS5420702A (en) | 1977-07-15 | 1977-07-15 | Method of producing information record reflecting film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5420702A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947172A (en) * | 1982-09-11 | 1984-03-16 | トヨタ自動車株式会社 | Low-noise type chipping hammer |
| JP2554321B2 (en) * | 1985-12-27 | 1996-11-13 | パイオニア株式会社 | Optical recording medium |
-
1977
- 1977-07-15 JP JP8475577A patent/JPS5420702A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5420702A (en) | 1979-02-16 |
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