JPS6142315B2 - - Google Patents
Info
- Publication number
- JPS6142315B2 JPS6142315B2 JP53013850A JP1385078A JPS6142315B2 JP S6142315 B2 JPS6142315 B2 JP S6142315B2 JP 53013850 A JP53013850 A JP 53013850A JP 1385078 A JP1385078 A JP 1385078A JP S6142315 B2 JPS6142315 B2 JP S6142315B2
- Authority
- JP
- Japan
- Prior art keywords
- reflective film
- information recording
- recording carrier
- protective film
- light
- 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 13
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 4
- 239000010408 film Substances 0.000 description 33
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
- Optical Recording Or Reproduction (AREA)
- Credit Cards Or The Like (AREA)
- Holo Graphy (AREA)
Description
【発明の詳細な説明】
この発明は、光スポツトをその凹凸状ピツト溝
に当て、その反射光により情報を読み取ることの
できる光学式情報記録担体に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical information recording carrier in which a light spot is applied to its uneven pit grooves and information can be read by the reflected light.
従来のこの種の情報記録担体を第１図により説
明する。図においては、情報再生機構をも簡単に
示しているが、光源１を出た光ビーム２はハーフ
ミラー３により反射され、情報記録担体４に入射
される。情報記録担体４は断面図で示されてい
る。情報記録担体４は透明な部分５と反射率の高
い部分である反射膜６とで構成されており、光透
過性の基板である透明な部分５には例えばプラス
チツク等が使われ、光ビーム２の透明な部分５へ
の入射面７ａは平担であり、もう一方の面７ｂに
は通常ピツトと称する情報溝８が刻まれている。
反射率の高い部分である反射膜６は金属膜等であ
り、情報溝８に当つた光ビーム２は反射されて、
ハームミラー３を透過し、光検知器９に入射す
る。光検知器９で情報溝８に含まれる情報が電気
信号として取り出される。 A conventional information recording carrier of this type will be explained with reference to FIG. Although the information reproducing mechanism is also simply shown in the figure, a light beam 2 emitted from a light source 1 is reflected by a half mirror 3 and is incident on an information recording carrier 4. The information record carrier 4 is shown in cross-section. The information recording carrier 4 is composed of a transparent part 5 and a reflective film 6 which is a part with high reflectance.The transparent part 5 which is a light-transmitting substrate is made of, for example, plastic, and the light beam 2 The entrance surface 7a of the transparent portion 5 is flat, and the other surface 7b has information grooves 8, usually called pits, carved therein.
The reflective film 6, which is a portion with high reflectance, is a metal film or the like, and the light beam 2 hitting the information groove 8 is reflected,
The light passes through the harm mirror 3 and enters the photodetector 9. The information contained in the information groove 8 is extracted by the photodetector 9 as an electrical signal.
反射膜６に用いられる金属は例えばアルミニウ
ムあるいは銀等が使われ、蒸着あるいは銀鏡反応
の無電解メツキで付着されており、その厚さは
1000Åから2000Å程度である。 The metal used for the reflective film 6 is, for example, aluminum or silver, and is deposited by vapor deposition or electroless plating using a silver mirror reaction, and its thickness is as follows:
It is about 1000 Å to 2000 Å.
従来の情報記録担体４は以上のように構成され
ているので、反射膜６の付着力が弱く、従つて機
械的強度が弱いために反射膜６に接触させないこ
とが必要になり、その取り扱いに非常に注意を要
するものであつた。また、反射膜６が薄膜である
為に、空気中に露出している面から酸化が進み、
その金属酸化が光ビーム２の反射面に達してしま
うので長期保存ができないという欠点があつた。 Since the conventional information recording carrier 4 is constructed as described above, the adhesive force of the reflective film 6 is weak, and therefore the mechanical strength is weak, so it is necessary to prevent it from coming into contact with the reflective film 6, and it is difficult to handle it. This required extreme caution. In addition, since the reflective film 6 is a thin film, oxidation progresses from the surface exposed to the air.
Since the metal oxidation reaches the reflective surface of the light beam 2, it has the disadvantage that it cannot be stored for a long time.
この発明は上記のような従来のものの欠点を除
去するためになされたもので、反射膜６の上にニ
ツケルあるいはクロムからなる保護膜を付着させ
ることにより、機械的強度を強めることができ、
取り扱いを容易にでき、かつ長期保存できる光学
式情報記録担体を提供することを目的としてい
る。 This invention was made to eliminate the drawbacks of the conventional ones as described above, and by attaching a protective film made of nickel or chromium to the reflective film 6, the mechanical strength can be strengthened.
The object of the present invention is to provide an optical information recording carrier that is easy to handle and can be stored for a long period of time.
以下、この発明の一実施例を図について説明す
る。第２図はこの発明による光学式情報記録担体
１０の断面図を示し、図において、この発明によ
る情報記録担体１０は、透明な部分５と、反射膜
６と、この反射膜６の上に配置された保護膜１１
とで構成されている。透明な部分５と反射膜６の
構成は従来のものと同じである。保護膜１１とし
ては例えばニツケル、クロム等が挙げられ、これ
は反射膜６の金属を電極として電解メツキによつ
て付着させて形成する。この反射膜６の厚みは、
例えば１μｍ〜10μｍと、比較的厚いものであ
る。この保護膜１１を構成する金属は、比較的化
学的に安定であり、また硬い金属でもある。 An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 shows a sectional view of an optical information recording carrier 10 according to the present invention, and in the figure, the information recording carrier 10 according to the present invention includes a transparent portion 5, a reflective film 6, and a structure disposed on the reflective film 6. protective film 11
It is made up of. The structures of the transparent portion 5 and the reflective film 6 are the same as those of the conventional one. The protective film 11 may be made of, for example, nickel or chromium, and is formed by depositing the metal of the reflective film 6 as an electrode by electrolytic plating. The thickness of this reflective film 6 is
For example, it is relatively thick, 1 μm to 10 μm. The metal constituting this protective film 11 is relatively chemically stable and hard.
このように、電解メツキにより、ニツケルある
いはクロムのような硬い金属の保護膜１１を十分
に厚く付着させることにより、反射膜６は機械的
接触に強くなり、情報記録担体１０の取り扱いが
簡単になる。また反射膜６が、空気より遮断され
るために酸化の危険性がなくなり、長期保存が可
能となる。更に保護膜１１として使用する金属は
ニツケルあるいはクロム等の化学的性質の安定な
ものを選び、その厚さを十分に厚くすることによ
り、保護膜１１の表面からの酸化が反射膜６に及
ぶことをなくすことができ、実用的効果を備えた
ものである。 In this way, by electrolytically plating the protective film 11 of hard metal such as nickel or chromium to a sufficiently thick thickness, the reflective film 6 becomes resistant to mechanical contact, and the information recording carrier 10 becomes easy to handle. . Furthermore, since the reflective film 6 is shielded from air, there is no risk of oxidation, and long-term storage is possible. Furthermore, by selecting a metal with stable chemical properties such as nickel or chromium for the protective film 11 and making the metal sufficiently thick, oxidation from the surface of the protective film 11 will not reach the reflective film 6. It is possible to eliminate this problem and has practical effects.
なお、上記実施例では、反射膜をアルミニウム
あるいは銀としたが、これに限るものでなく、ま
た反射膜の厚みも1000Å〜2000Åに限るものでは
ない。どのような反射膜を持つた情報記録担体に
於いても、比較的化学的に安定な、硬い金属を保
護膜として付着させれば同様の効果を得ることが
できる。 In the above embodiments, the reflective film is made of aluminum or silver, but the reflective film is not limited to this, and the thickness of the reflective film is not limited to 1000 Å to 2000 Å. No matter what type of reflective film the information recording carrier has, the same effect can be obtained by attaching a relatively chemically stable, hard metal as a protective film.
また、保護膜の厚さも、１μｍ〜10μｍに限る
ことはなく、機械的接触強度及び酸化に対する安
定度を保ち、かつ、その応力によつて透明な部分
５を歪ませない厚さならいくらでも良い。 Further, the thickness of the protective film is not limited to 1 μm to 10 μm, and may be any thickness that maintains mechanical contact strength and stability against oxidation and does not distort the transparent portion 5 due to the stress.
以上のように、この発明によれば、反射膜６の
上に、硬くかつ化学的に安定なニツケルあるいは
クロムからなる保護膜を付着させたので、取り扱
いが容易で長期保存の効く情報記録担体が得られ
る効果が有る。 As described above, according to the present invention, since a hard and chemically stable protective film made of nickel or chromium is attached to the reflective film 6, an information recording carrier that is easy to handle and can be stored for a long time can be obtained. There are benefits to be gained.
１図は光学式情報再生機構と共に従来の情報記
録担体を説明するための構成図、第２図はこの発
明の一実施例による情報記録担体を示す断面図で
ある。
４…情報記録担体、５…光透過性の基板、６…
反射膜、１１…保護膜。なお、図中同一符号は同
一又は相当部分を示す。
FIG. 1 is a configuration diagram for explaining a conventional information recording carrier together with an optical information reproducing mechanism, and FIG. 2 is a sectional view showing an information recording carrier according to an embodiment of the present invention. 4... Information recording carrier, 5... Light-transmissive substrate, 6...
Reflective film, 11...protective film. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
過性の基板と、 上記ピツトが形成された側の上記基板面上に形
成した光反射膜と、 この反射膜の表面上に形成した高硬度でしかも
化学的に安定なニツケル又はクロムからなる保護
膜とを備えた光学式情報記録担体。 ２ 保護膜の厚さが１μｍ〜10μｍである特許請
求の範囲第１項記載の光学式情報記録担体。[Scope of Claims] 1. A light-transmitting substrate on which information is recorded in the form of pits on one surface, a light-reflecting film formed on the surface of the substrate on the side where the pits are formed, and An optical information recording carrier comprising a protective film made of highly hard and chemically stable nickel or chromium formed on the surface. 2. The optical information recording carrier according to claim 1, wherein the protective film has a thickness of 1 μm to 10 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1385078A JPS54106149A (en) | 1978-02-09 | 1978-02-09 | Optical information recording carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1385078A JPS54106149A (en) | 1978-02-09 | 1978-02-09 | Optical information recording carrier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54106149A JPS54106149A (en) | 1979-08-20 |
| JPS6142315B2 true JPS6142315B2 (en) | 1986-09-20 |
Family
ID=11844746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1385078A Granted JPS54106149A (en) | 1978-02-09 | 1978-02-09 | Optical information recording carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54106149A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63149313U (en) * | 1987-03-24 | 1988-09-30 |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0132151Y2 (en) * | 1980-07-30 | 1989-10-02 | ||
| DE3118298A1 (en) * | 1981-05-08 | 1982-12-02 | Gao Ges Automation Org | ID CARD WITH STORED IC BLOCK |
| JPS58175154A (en) * | 1982-04-08 | 1983-10-14 | Matsushita Electric Ind Co Ltd | Optical recording and reproducing disc |
| JPS5979444A (en) * | 1982-10-28 | 1984-05-08 | Sharp Corp | Optical memory element |
| JPS6034664U (en) * | 1983-08-15 | 1985-03-09 | ソニー株式会社 | optical information card |
| JPS6034663U (en) * | 1983-08-15 | 1985-03-09 | ソニー株式会社 | optical information card |
| JPS6154054A (en) * | 1984-08-23 | 1986-03-18 | Matsushita Electric Ind Co Ltd | Plate information recording medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5279946A (en) * | 1975-12-25 | 1977-07-05 | Sanyo Electric Co Ltd | Preparation of reflection type hologram information sheet |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5411790Y2 (en) * | 1974-12-06 | 1979-05-25 |
-
1978
- 1978-02-09 JP JP1385078A patent/JPS54106149A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5279946A (en) * | 1975-12-25 | 1977-07-05 | Sanyo Electric Co Ltd | Preparation of reflection type hologram information sheet |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63149313U (en) * | 1987-03-24 | 1988-09-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54106149A (en) | 1979-08-20 |
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