JPH0264938A - Optical memory body - Google Patents
Optical memory bodyInfo
- Publication number
- JPH0264938A JPH0264938A JP63216779A JP21677988A JPH0264938A JP H0264938 A JPH0264938 A JP H0264938A JP 63216779 A JP63216779 A JP 63216779A JP 21677988 A JP21677988 A JP 21677988A JP H0264938 A JPH0264938 A JP H0264938A
- Authority
- JP
- Japan
- Prior art keywords
- film
- reflecting film
- transparent substrate
- corrosion resistance
- reflective film
- 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
Links
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は音響機器などに用いられる光記憶体に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to an optical storage medium used in audio equipment and the like.
従来、光記憶体の一つであるコンパクトディスク（以下
、ＣＤと記す）の反射膜として、アルミニウムが使用さ
れている。しかし、近年、ＣＤにコンピュータデータを
記録したＣＤ−ＲＯＭが普及し、従来にも増して、高温
・高湿下での保存性の高いものが望まれている。Conventionally, aluminum has been used as a reflective film for compact discs (hereinafter referred to as CDs), which are one type of optical storage medium. However, in recent years, CD-ROMs in which computer data is recorded on CDs have become widespread, and there is a demand for CD-ROMs that can be stored at high temperatures and high humidity more than ever before.
上述した従来の光記憶体は、かかる過酷な環境下におい
て、蒸着された金属反射膜が腐食し、信号読み取りの指
標とされるエラーレートが増加し、上記のニーズに適応
できないという問題があった。The above-mentioned conventional optical memory had the problem that under such harsh environments, the deposited metal reflective film corroded and the error rate, which is used as an indicator for signal reading, increased, making it unable to meet the above needs. .
本発明は、光記憶体の耐腐食性、特に反射膜の耐腐食性
を強化し、信頼性を向上させた光記憶体を提供すること
にある。An object of the present invention is to provide an optical storage medium with improved corrosion resistance, particularly the corrosion resistance of a reflective film, and improved reliability.
本発明の光記憶体は、透明基板と、前記透明基板上に被
覆した窒化ジルコニウムからなる反射膜と、前記反射膜
上に被覆した保護膜とを備えて構成される。The optical memory of the present invention includes a transparent substrate, a reflective film made of zirconium nitride coated on the transparent substrate, and a protective film coated on the reflective film.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す光記憶体の部分断面図
である。FIG. 1 is a partial sectional view of an optical storage medium showing an embodiment of the present invention.
第１図に示すように、強化ガラス、石英ガラス、ポリカ
ーボネート樹脂等からなる透明基板１の上に窒化ジルコ
ニウムを高周波マグネトロンスパッタ法、イオンブレー
ティング法、クラスターイオンビーム法、プラズマＣＶ
Ｄ法等により５０〜５００ｎｍの膜厚で被覆して反射膜
２を形成し、反射膜２の上に保護膜３として樹脂膜を被
覆する。As shown in FIG. 1, zirconium nitride is deposited on a transparent substrate 1 made of tempered glass, quartz glass, polycarbonate resin, etc. by high-frequency magnetron sputtering, ion blating, cluster ion beam, plasma CV.
A reflective film 2 is formed by coating with a film thickness of 50 to 500 nm using the D method or the like, and a resin film is coated on the reflective film 2 as a protective film 3.
ここで、耐腐食性を試験するために、第１表に示すよう
な透明基板１の上に窒化ジルコニウムからなる反射膜２
と保護膜３を順次被覆して設けた６個の試料を準備した
。Here, in order to test the corrosion resistance, a reflective film 2 made of zirconium nitride was placed on a transparent substrate 1 as shown in Table 1.
Six samples were prepared which were sequentially coated with the protective film 3 and the protective film 3.
第１表
ラム膜を使用した従来品について初期のエラーレートを
測定した結果、透明基板１の材質や反射膜２の膜厚の違
いにもかかわらずすべての試料について５×１０１の値
を得た。Table 1: As a result of measuring the initial error rate of conventional products using RAM membrane, a value of 5 x 101 was obtained for all samples despite differences in the material of transparent substrate 1 and the film thickness of reflective film 2. .
次に、これら試料Ｉ〜■及び従来品に対して温度８０℃
、相対湿度９０％の雰囲気中の耐腐食性試験を１力月間
実施した後、信号の良否の指標となるエラーレートを測
定した結果を第２表に示す、第２表に示すように、従来
品では測定不能となったのに対して本発明の試料Ｉ〜■
では多少の劣化がみられるものの充分実用できるものが
実現できた。Next, the temperature for these samples I to ■ and the conventional product was 80°C.
After carrying out a corrosion resistance test in an atmosphere of 90% relative humidity for one month, the error rate, which is an indicator of signal quality, was measured and the results are shown in Table 2.As shown in Table 2, conventional Samples of the present invention could not be measured, whereas samples I~■ of the present invention
Although some deterioration was observed, we were able to create something that was sufficiently usable for practical use.
第２表
第１図は本発明の一実施例を示す光記憶体の部分断面図
である。FIG. 1 of Table 2 is a partial sectional view of an optical storage body showing an embodiment of the present invention.
１・・・透明基板、２・・・反射膜、３・・・保護膜。1... Transparent substrate, 2... Reflective film, 3... Protective film.
Claims (1)
ムからなる反射膜と、前記反射膜上に被覆した保護膜と
を備えたことを特徴とする光記憶体。An optical memory comprising: a transparent substrate; a reflective film made of zirconium nitride coated on the transparent substrate; and a protective film coated on the reflective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216779A JPH0264938A (en) | 1988-08-30 | 1988-08-30 | Optical memory body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63216779A JPH0264938A (en) | 1988-08-30 | 1988-08-30 | Optical memory body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0264938A true JPH0264938A (en) | 1990-03-05 |
Family
ID=16693758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63216779A Pending JPH0264938A (en) | 1988-08-30 | 1988-08-30 | Optical memory body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0264938A (en) |
-
1988
- 1988-08-30 JP JP63216779A patent/JPH0264938A/en active Pending
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