JPH01116978A - Optical storage medium - Google Patents
Optical storage mediumInfo
- Publication number
- JPH01116978A JPH01116978A JP62272702A JP27270287A JPH01116978A JP H01116978 A JPH01116978 A JP H01116978A JP 62272702 A JP62272702 A JP 62272702A JP 27270287 A JP27270287 A JP 27270287A JP H01116978 A JPH01116978 A JP H01116978A
- Authority
- JP
- Japan
- Prior art keywords
- storage medium
- optical storage
- reduced
- long period
- ultraviolet ray
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000002834 transmittance Methods 0.000 claims description 4
- 239000011347 resin Substances 0.000 abstract description 4
- 229920005989 resin Polymers 0.000 abstract description 4
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 229920000515 polycarbonate Polymers 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70691—Handling of masks or workpieces
- G03F7/70733—Handling masks and workpieces, e.g. exchange of workpiece or mask, transport of workpiece or mask
- G03F7/7075—Handling workpieces outside exposure position, e.g. SMIF box
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- 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］
本発明は光デイスク装置等に用いられる光記録媒体に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical recording medium used in optical disk devices and the like.
［従来の技術］
光デイスク装置等に用いられる光記憶媒体は表面上に記
録膜を有する基板と、この基板を保護するため内部に基
板を収容して密封する保護容器とで構成されており、記
録膜に記録されている情報を記録再生するためのレーザ
光線は保護容器を透過して記録膜に到達し、情報を再生
する場合にはその反射光は再び保護容器を透過して読み
取られる。[Prior Art] An optical storage medium used in an optical disk device or the like is composed of a substrate having a recording film on its surface, and a protective container that houses and seals the substrate inside to protect the substrate. A laser beam for recording and reproducing information recorded on the recording film passes through the protective container and reaches the recording film, and when reproducing information, the reflected light passes through the protective container again and is read.
このため、保護容器の材質は種々のものが考えられるが
、光の透過性が優れ、しかも屈折率が小さいポリカーボ
ネート等の樹脂成形品を成形後、特に何ら加工を施さず
成形したまま使用している。For this reason, various materials can be considered for the protective container, but after molding a resin molded product such as polycarbonate, which has excellent light transmittance and a low refractive index, it is best to use it as it is without any special processing. There is.
［発明が解決しようとする問題点］
上述した従来の光記憶媒体は、保護容器が紫外線を透過
するため、機械的特性の変化が発生すると共に透過紫外
線により光記憶媒体の寿命を短くし、結果的に記録され
ている情報が読み取り誤りを生じるという欠点を有して
いた。[Problems to be Solved by the Invention] In the conventional optical storage medium described above, the protective container transmits ultraviolet rays, which causes changes in mechanical properties and shortens the life of the optical storage medium due to the transmitted ultraviolet rays. This had the disadvantage that the information recorded on the system could be read incorrectly.
本発明の目的は前記問題点を解消した元肥憶媒。The object of the present invention is to provide a source fertilizer storage medium that solves the above-mentioned problems.
体を提供することにある。It's about offering your body.
［問題点を解決するための手段］
本発明は少なくとも片面に記録膜をもつ円板状の基板と
、前記基板の上下両面および側面を密封して覆う透明な
保護容器とを有し、前記保護容器は、紫外線の透過率を
低下させると共に長期に渡って照射される紫外線に対し
て機械的変化の少ない材質からなることを特徴とする光
記憶媒体である。[Means for Solving the Problems] The present invention includes a disk-shaped substrate having a recording film on at least one side, and a transparent protective container that seals and covers both upper and lower surfaces and side surfaces of the substrate. The container is an optical storage medium characterized by being made of a material that reduces the transmittance of ultraviolet rays and exhibits little mechanical change when exposed to ultraviolet rays that are irradiated over a long period of time.
［実施例］ 次に本発明について図面を参照して説明する。[Example] Next, the present invention will be explained with reference to the drawings.
第１図は本発明の一実施例を示す断面図、第２図は本発
明の一実施例の外観を示す斜視図で、内部構造を示すた
め媒体を直径方向に切断して示したものである。図にお
いて本発明の光記憶媒体５において、中央部に着脱用の
穴３ａを有する円板状の基板３はその上下の而および外
周を保護容器１で覆われ、その間には空気層２が形成さ
れている。Fig. 1 is a sectional view showing an embodiment of the present invention, and Fig. 2 is a perspective view showing the appearance of an embodiment of the invention, with the medium cut in the diameter direction to show the internal structure. be. In the figure, in the optical storage medium 5 of the present invention, a disk-shaped substrate 3 having a hole 3a for attachment and detachment in the center is covered with a protective container 1 on the upper and lower sides and the outer periphery, and an air layer 2 is formed in between. has been done.
前記保護容器１はその表面に強力な紫外線が照射され紫
外線の透過率を低下させるポリカーボネート等の樹脂を
使用しく第１図の実施例は、記録膜４は片面のみである
が両面にある場合もある）、シかも長期的に低レベルで
照射される紫外線（対して機械的変化が少ないものに構
成しである。The protective container 1 is made of a resin such as polycarbonate, whose surface is irradiated with strong ultraviolet rays and reduces the transmittance of the ultraviolet rays.In the embodiment shown in FIG. 1, the recording film 4 is only on one side, but it may be on both sides. It may be necessary to use ultraviolet rays that are irradiated at low levels over a long period of time (as opposed to those that cause little mechanical change).
［発明の効果］
以上説明したように本発明はポリカーボネート等の樹脂
に強力な紫外線を照射することにより、紫外線の透過が
少なくなる特性を利用しこれを光記憶媒体の保護容器に
用いることにより、機械的変化を少なくし、長期的に安
定した読み取り誤りの少ない光記憶媒体が得られるとい
う効果がある。[Effects of the Invention] As explained above, the present invention utilizes the property of reducing the transmission of ultraviolet rays by irradiating a resin such as polycarbonate with strong ultraviolet rays, and uses this in a protective container for an optical storage medium. This has the effect of reducing mechanical changes and providing an optical storage medium that is stable over a long period of time and has fewer reading errors.
第１図は本発明の一実施例の断面図、第２図は同斜視図
である。
１・・・保護容器 ２・・・空気層３・・・基
板 ４・・・記録膜５・・・光記憶媒体FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is a perspective view thereof. 1... Protective container 2... Air layer 3... Substrate 4... Recording film 5... Optical storage medium
Claims (1)
前記基板の上下両面および側面を密封して覆う透明な保
護容器とを有し、前記保護容器は、紫外線の透過率を低
下させると共に長期に渡って照射される紫外線に対して
機械的変化の少ない材質からなることを特徴とする光記
憶媒体。(1) a disk-shaped substrate having a recording film on at least one side;
It has a transparent protective container that seals and covers both upper and lower surfaces and side surfaces of the substrate, and the protective container reduces the transmittance of ultraviolet rays and has little mechanical change due to ultraviolet rays that are irradiated over a long period of time. An optical storage medium characterized by being made of a material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62272702A JPH01116978A (en) | 1987-10-28 | 1987-10-28 | Optical storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62272702A JPH01116978A (en) | 1987-10-28 | 1987-10-28 | Optical storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01116978A true JPH01116978A (en) | 1989-05-09 |
Family
ID=17517597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62272702A Pending JPH01116978A (en) | 1987-10-28 | 1987-10-28 | Optical storage medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01116978A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293370A (en) * | 1991-01-16 | 1994-03-08 | Del Mar Avionics | Method and apparatus for creating optical disc masters |
-
1987
- 1987-10-28 JP JP62272702A patent/JPH01116978A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293370A (en) * | 1991-01-16 | 1994-03-08 | Del Mar Avionics | Method and apparatus for creating optical disc masters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040706 |
|
| A521 | Written amendment |
Effective date: 20040902 Free format text: JAPANESE INTERMEDIATE CODE: A523 |
|
| A02 | Decision of refusal |
Effective date: 20041102 Free format text: JAPANESE INTERMEDIATE CODE: A02 |