KR20080049943A - Optical recording medium - Google Patents

Optical recording medium Download PDF

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Publication number
KR20080049943A
KR20080049943A KR1020060120558A KR20060120558A KR20080049943A KR 20080049943 A KR20080049943 A KR 20080049943A KR 1020060120558 A KR1020060120558 A KR 1020060120558A KR 20060120558 A KR20060120558 A KR 20060120558A KR 20080049943 A KR20080049943 A KR 20080049943A
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KR
South Korea
Prior art keywords
layer
recording medium
optical recording
substrate
moisture
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KR1020060120558A
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Korean (ko)
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정인호
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엘지전자 주식회사
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Priority to KR1020060120558A priority Critical patent/KR20080049943A/en
Publication of KR20080049943A publication Critical patent/KR20080049943A/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24062—Reflective layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
    • G11B7/2534—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins polycarbonates [PC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B2007/25402—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of organic resins
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/254—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers
    • G11B2007/25408—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of protective topcoat layers consisting essentially of inorganic materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B2007/2582—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver

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  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Manufacturing Optical Record Carriers (AREA)

Abstract

An optical recording medium is provided to prevent moisture from being formed on a recording layer without a protective layer by placing a printing layer below the substrate. An optical recording medium(100) comprises a substrate(110), a reflection layer(120), a recording layer(130), and a printing layer(150). The reflection layer, placed on the substrate, reflects the projected laser beam. The recording layer is placed on the reflection layer. The printing layer is placed below the substrate and is printed with dye including moisture-proof paint such as oily photocurable ink.

Description

광기록매체{OPTICAL RECORDING MEDIUM}Optical recording medium {OPTICAL RECORDING MEDIUM}

도 1은 일반적인 광기록매체의 구조를 도시한 단면도이다.1 is a cross-sectional view showing the structure of a general optical recording medium.

도 2는 보호층이 형성된 일반적인 광기록매체의 구조를 도시한 단면도이다.2 is a cross-sectional view showing the structure of a general optical recording medium having a protective layer formed thereon.

도 3은 본 발명의 일 실시예에 따른 광기록매체의 구조를 도시한 단면도이다.3 is a cross-sectional view showing the structure of an optical recording medium according to an embodiment of the present invention.

본 발명은 광기록매체에 관한 것으로, 더욱 상세하게는 광기록매체에 수분이 침투하는 것을 방지할 수 있는 광기록매체에 관한 것이다. The present invention relates to an optical recording medium, and more particularly, to an optical recording medium that can prevent moisture from penetrating into the optical recording medium.

광기록기술은 최근 고밀도 대용량 디지털 정보저장기술로 각광을 받고 있으며, 집속된 레이저 빔을 이용해 광기록매체에 정보를 기록하고 판독하는 기술이다. 이와 같은 광기록매체는 대용량의 데이터를 기록할 수 있으며, 레이저 빔을 집광렌즈에 의해 집속할 수 있어 헤드와 광기록매체간 거리를 수 mm 정도 띄어 놓을 수 있고 이에 따라 헤드와 광기록매체간의 충돌과 마모의 문제가 적다. Optical recording technology has recently been in the spotlight as a high-density, high-capacity digital information storage technology, and is a technology for recording and reading information on an optical recording medium using a focused laser beam. Such an optical recording medium can record a large amount of data, and can focus a laser beam by a condenser lens, thereby allowing the distance between the head and the optical recording medium to be several millimeters wide, and thus the collision between the head and the optical recording medium. Less wear and tear problems.

광기록매체로서 대용량의 데이터를 기록할 수 있는 광디스크가 널리 사용되 고 있다. 최근에는 고화질의 비디오 데이터와 고음질의 오디오 데이터를 장시간 동안 기록하여 저장할 수 있는 고밀도 광디스크로서 블루레이 디스크(Blue-ray Disc : BD) 및 근접장 기록(Near Field Recording : NFR)이 개발되고 있다. As an optical recording medium, an optical disc capable of recording a large amount of data is widely used. Recently, Blu-ray Disc (BD) and Near Field Recording (NFR) have been developed as high-density optical discs capable of recording and storing high-quality video data and high-quality audio data for a long time.

도 1은 일반적인 광기록매체의 구조를 도시한 단면도이다.1 is a cross-sectional view showing the structure of a general optical recording medium.

도 1을 참조하면, 광기록매체는 기판(10), 반사층(20), 기록층(30), 커버층(Cover layer, 40) 및 인쇄막(50)을 포함한다.Referring to FIG. 1, the optical recording medium includes a substrate 10, a reflective layer 20, a recording layer 30, a cover layer 40, and a print film 50.

기판(10)은 폴리카보네이트(Polycarbonate) 수지로 이루어지며, 기판(10)의 상면에 반사층(20), 기록층(30) 및 커버층(40)이 순차적으로 형성된다.The substrate 10 is made of polycarbonate resin, and the reflective layer 20, the recording layer 30, and the cover layer 40 are sequentially formed on the upper surface of the substrate 10.

반사층(20)은 은 또는 은 합금으로 이루어지며, 상기 광기록매체에 입사된 레이저 빔을 반사하여 다시 커버층(40) 방향으로 출사시킨다. The reflective layer 20 is made of silver or silver alloy, and reflects the laser beam incident on the optical recording medium and emits the light toward the cover layer 40 again.

기록층(30)은 상기 광기록매체의 기록 매커니즘, 종류에 따라 데이터의 읽기/쓰기에 적합한 물질로 형성되며, 예를 들어 무기물 또는 염료와 같은 유기물 등으로 형성된다. The recording layer 30 is formed of a material suitable for reading / writing of data according to the recording mechanism and type of the optical recording medium. For example, the recording layer 30 is formed of an inorganic material or an organic material such as a dye.

커버층(40)은 기록층(30)의 상부에 약 0.1mm의 두께로 형성되어, 상기 광기록매체, 특히 기록층(30)의 손상을 방지한다. The cover layer 40 is formed on the top of the recording layer 30 to a thickness of about 0.1 mm to prevent damage to the optical recording medium, especially the recording layer 30.

인쇄막(50)은 상기 광기록매체의 기판(10)의 하면에 도포되는 것으로 특정한 색을 띠도록 염료를 도포하거나 상기 광기록매체의 제목과 같은 정보를 인쇄한다. The printing film 50 is applied to the lower surface of the substrate 10 of the optical recording medium, and the dye is applied to have a specific color or prints information such as the title of the optical recording medium.

한편, 이와 같이 구성된 광기록매체는 수분에 취약하다. 도 1에 도시된 바와 같이, 커버층(40)이 기록층(30)에 수분이 침투하는 것을 막아주는 역할을 수행하나, 기판(10)을 통해 수분이 기록층(30)까지 침투하는 것은 막지 못한다. 이에 따 라 기록층(30)의 물질이 변질되어 데이터의 읽기/쓰기에 오류가 발생한다.On the other hand, the optical recording medium configured as described above is vulnerable to moisture. As shown in FIG. 1, the cover layer 40 prevents moisture from penetrating the recording layer 30, but does not prevent moisture from penetrating the recording layer 30 through the substrate 10. can not do it. Accordingly, the material of the recording layer 30 is deteriorated, and an error occurs in reading / writing of data.

이에 따라, 기판(10)을 통해 수분이 침투하는 것을 방지하는 것이 필요하게 되었다.Accordingly, it has become necessary to prevent the penetration of moisture through the substrate 10.

도 2는 보호층이 형성된 일반적인 광기록매체의 구조를 도시한 단면도이다.2 is a cross-sectional view showing the structure of a general optical recording medium having a protective layer formed thereon.

도 2를 참조하면, 기판(10) 하부의 인쇄막(50)과의 사이에 보호층(60)이 더 형성된 것을 확인할 수 있다. 보호층(60)은 기판(10)의 하부에 폴리머(polymer) 등을 코팅하여 형성한다. Referring to FIG. 2, the protective layer 60 may be further formed between the printed film 50 under the substrate 10. The protective layer 60 is formed by coating a polymer or the like on the lower portion of the substrate 10.

이와 같이, 기판(10)의 하부에 보호층(60)을 형성할 경우, 기판(10)을 통해 기록층(30)에 수분이 침투하는 것을 방지할 수 있으나, 보호층(60)을 형성하기 위해, 별도의 코팅 장치가 필요하여 제조비용 및 단계가 증가하는 문제점이 있었다.As such, when the protective layer 60 is formed below the substrate 10, moisture may be prevented from penetrating into the recording layer 30 through the substrate 10, but the protective layer 60 may be formed. To this end, a separate coating apparatus is required, which increases manufacturing costs and steps.

본 발명의 목적은 기록층에 수분이 침투하는 것을 방지하여 기록층이 변질되는 것을 방지하고, 데이터의 읽기/쓰기의 정확도를 높일 수 있는 광기록매체를 제공하는 것이다.SUMMARY OF THE INVENTION An object of the present invention is to provide an optical recording medium which can prevent moisture from penetrating into a recording layer, thereby preventing the recording layer from being deteriorated, and increasing the accuracy of reading / writing data.

또한 본 발명의 목적은 별도의 보호층을 형성하지 않고도 기록층에 수분이 침투하는 것을 방지하여 제조비용을 감소시키고, 제조를 용이하게 할 수 있는 광기록매체를 제공하는 것이다.It is also an object of the present invention to provide an optical recording medium which can reduce the manufacturing cost by preventing the penetration of moisture into the recording layer without forming a separate protective layer, and can facilitate the manufacture.

상기한 바와 같은 목적을 달성하기 위하여, 본 발명의 바람직한 일 실시예에 따른 광기록매체는 기판; 상기 기판의 상부에 위치하여 입사하는 상기 레이저 빔을 반사하는 반사층; 상기 반사층의 상부에 위치하는 기록층; 및 상기 기판의 하부에 수분 침투 방지 도료가 포함된 염료로 인쇄된 인쇄막을 포함한다.In order to achieve the above object, an optical recording medium according to an embodiment of the present invention is a substrate; A reflection layer positioned on the substrate and reflecting the incident laser beam; A recording layer located above the reflective layer; And a printing film printed with a dye including a moisture permeation prevention paint on a lower portion of the substrate.

상기 수분 침투 방지 도료는 유성의 광경화성 잉크류 또는 실리카가 포함된 도료인 것을 특징으로 한다.The water permeation prevention paint is a paint containing oily photocurable inks or silica.

상기 광기록매체는 기록층에 수분이 침투하는 것을 방지하여 기록층이 변질되는 것을 방지하고, 데이터의 읽기/쓰기의 정확도를 높일 수 있고, 별도의 보호층을 형성하지 않고도 기록층에 수분이 침투하는 것을 방지하여 제조비용을 감소시키고, 제조를 용이하게 할 수 있다.The optical recording medium can prevent moisture from penetrating into the recording layer, thereby preventing the recording layer from being deteriorated, increasing the accuracy of reading / writing data, and penetrating moisture into the recording layer without forming a separate protective layer. Can reduce the manufacturing cost and facilitate the manufacture.

이하에서는 첨부된 도면들을 참조하여 본 발명에 따른 광기록매체 및 그 제조방법의 바람직한 실시예를 자세히 설명하도록 한다. Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the optical recording medium and a manufacturing method according to the present invention.

도 3은 본 발명의 일 실시예에 따른 광기록매체의 구조를 도시한 단면도이다.3 is a cross-sectional view showing the structure of an optical recording medium according to an embodiment of the present invention.

도 3을 참조하면, 본 발명의 광기록매체(100)는 기판(110), 반사층(120), 기록층(130), 커버층(140) 및 인쇄막(150)을 포함한다.Referring to FIG. 3, the optical recording medium 100 of the present invention includes a substrate 110, a reflective layer 120, a recording layer 130, a cover layer 140, and a printing film 150.

본 발명의 광기록매체(100)는, 바람직하게는 블루레이 디스크 또는 근접광 기록(NFR)이다.The optical recording medium 100 of the present invention is preferably a Blu-ray disc or near-field recording (NFR).

상기 블루레이 디스크는 650nm 파장의 적색 레이저를 사용하는 디브이디(DVD)보다 단파장인 450nm 파장의 청자색 레이저를 사용한다. 0.1mm의 커버층을 가진 두께 1.2mm, 직경 12cm의 광디스크로 약 25GB에 해당하는 데이터를 저장할 수 있어 약 4.7GB를 저장할 수 있는 DVD에 비해 월등한 양의 데이터를 저장할 수 있다.The Blu-ray disc uses a blue violet laser having a wavelength shorter than that of a DVD (DVD) using a red laser having a wavelength of 650 nm. A 1.2mm thick, 12cm diameter optical disk with a cover layer of 0.1mm can store about 25GB of data, which is superior to a DVD that can store about 4.7GB.

상기 NFR은 공간을 통해 진행해 나가지 않고 물체의 표면에 국소화되어 있는 근접장 빛(Near-field light)을 이용하여 고밀도 기록/재생이 가능한 광디스크이다. 상기 NFR은 약 100GB에 해당하는 데이터를 저장할 수 있어 상기 블루레이 디스크에 비해 월등한 양의 데이터를 저장할 수 있다.The NFR is an optical disk capable of high density recording / reproducing using near-field light localized on the surface of an object without proceeding through space. The NFR may store data corresponding to about 100 GB, which may store an amount of data superior to that of the Blu-ray disc.

기판(110)은 광기록매체(100)의 물리적 형상을 지지하는 역할을 한다. 기판(110)은 세라믹이나, 유리, 수지 등이 일반적으로 사용되며, 폴리카보네이트 수지를 재료로 하는 것이 바람직하다. The substrate 110 supports the physical shape of the optical recording medium 100. The substrate 110 is generally made of ceramic, glass, resin, or the like, and preferably made of polycarbonate resin.

반사층(120)은 기판(110)의 상부에 위치하고, 커버층(140)을 통해 광기록매체(100)에 입사된 레이저 빔의 전부 또는 일부를 반사하여 다시 이를 커버층(140) 방향으로 출사시킨다. The reflective layer 120 is positioned on the substrate 110 and reflects all or a portion of the laser beam incident on the optical recording medium 100 through the cover layer 140 and emits the light toward the cover layer 140 again. .

따라서 반사층(120)은 반사도가 높은 물질이나 반사도가 높은 물질을 첨가한 합금, 예를 들어 은(Ag)이나 은 합금으로 이루어지는 것이 바람직하며, 기판(110) 위에 스퍼터링된다.Therefore, the reflective layer 120 is preferably made of an alloy having a high reflectivity or a material having high reflectivity, for example, silver (Ag) or a silver alloy, and is sputtered on the substrate 110.

기록층(130)은 실제 데이터가 기록되는 영역으로, 무기계 재료로 이루어진 막 또는 이러한 막의 적층제로 이루어지는 것이 바람직하다.The recording layer 130 is an area in which actual data is recorded, and is preferably made of a film made of an inorganic material or a laminate of such films.

커버층(140)은 기록층(130)에 기록된 데이터를 보호하기 위한 것으로, 데이터를 읽기 위한 광 파장 대역에 대하여 충분한 광 투과성을 가진 것이 바람직하다.The cover layer 140 is for protecting data recorded on the recording layer 130, and preferably has sufficient light transmittance for an optical wavelength band for reading data.

이와 같은 재료로 예를 들면 폴리카보네이트(polycarbonate), 폴리메틸메타 아크릴레이트(polymethyl methacrylate), 폴리스틸렌(polystyrene) 등의 수지(resin)를 사용할 수 있다. As such a material, for example, a resin such as polycarbonate, polymethyl methacrylate, polystyrene, or the like may be used.

인쇄막(150)은 기판(110)의 하부, 즉 반사층(120), 기록층(130) 및 커버층(140)이 형성된 기판(110)의 반대면에 위치하며, 사람의 눈으로 식별 가능한 다양한 형상의 문자 및 도안 등이, 라벨(Label)로서 인쇄되거나, 또는 스티커(Sticker) 형태의 라벨이 부착되는 형태로 구성된다.The print film 150 is positioned on the lower side of the substrate 110, that is, on the opposite surface of the substrate 110 on which the reflective layer 120, the recording layer 130, and the cover layer 140 are formed. Shaped characters, drawings, and the like are printed as labels, or configured in a form in which a label in the form of a sticker is attached.

이와 같이 광기록매체(100)의 일 측 표면에 인쇄되거나 또는 스티커 형태로 부착된 인쇄막(150)을 참조하여, 광기록매체(100)에 대한 개략적인 정보를 간편하게 확인할 수 있게 된다.As such, with reference to the printed film 150 printed on one surface of the optical recording medium 100 or attached in the form of a sticker, it is possible to easily check the schematic information of the optical recording medium 100.

또한, 인쇄막(150)은 기판(110)을 통해 기록층(130)에 수분이 침투하는 것을 방지하는 역할을 수행한다. In addition, the printing film 150 serves to prevent moisture from penetrating the recording layer 130 through the substrate 110.

이를 위해, 인쇄막(150)은 수분 침투 억제 도료가 포함된 인쇄용 잉크, 염료를 기판(110)의 하부에 인쇄하여 형성한다. To this end, the printing film 150 is formed by printing a printing ink, a dye containing a moisture permeation inhibiting paint on the lower portion of the substrate 110.

상기 수분 침투 억제 도료로는 유성의 광경화성 잉크류 또는 실리카(SiO2)가 함유된 도료가 사용될 수 있다. As the water-permeation-inhibiting paint, an oil-based photocurable ink or a paint containing silica (SiO 2 ) may be used.

이와 같이, 기록층(130)에 수분이 침투하는 것을 방지하기 위해, 기판(110)의 하부에 별도로 보호층을 코팅하지 않고, 상기 수분 침투 억제 도료가 포함된 물질로 인쇄막(150)을 형성하여 인쇄막(150)이 수분 침투를 방지하는 역할도 수행할 수 있다. As described above, in order to prevent moisture from penetrating into the recording layer 130, the printing layer 150 is formed of a material including the moisture permeation inhibiting paint instead of coating a protective layer under the substrate 110. Thus, the printing film 150 may also serve to prevent moisture penetration.

이에 따라, 별도로 보호층을 코팅하기 위한 설비가 필요하지 않으며, 보호층을 별도로 형성하지 않기 때문에 광기록매체(100)의 두께도 얇아질 수 있다.Accordingly, no facility for coating the protective layer is required separately, and since the protective layer is not formed separately, the thickness of the optical recording medium 100 may be thinner.

상기한 본 발명의 바람직한 실시예는 예시의 목적을 위해 개시된 것이고, 본 발명에 대한 통상의 지식을 가지는 당업자라면 본 발명의 사상과 범위 안에서 다양한 수정, 변경, 부가가 가능할 것이며, 이러한 수정, 변경 및 부가는 하기의 특허청구범위에 속하는 것으로 보아야 할 것이다. Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having ordinary knowledge of the present invention will be able to make various modifications, changes, additions within the spirit and scope of the present invention, such modifications, changes and Additions should be considered to be within the scope of the following claims.

이상에서 설명한 바와 같이, 본 발명에 따른 광기록매체는 기록층에 수분이 침투하는 것을 방지하여 기록층이 변질되는 것을 방지하고, 데이터의 읽기/쓰기의 정확도를 높일 수 있는 장점이 있다.As described above, the optical recording medium according to the present invention has advantages in preventing moisture from penetrating into the recording layer, preventing the recording layer from being deteriorated, and increasing the accuracy of reading / writing data.

또한 본 발명에 따른 광기록매체는 별도의 보호층을 형성하지 않고도 기록층에 수분이 침투하는 것을 방지하여 제조비용을 감소시키고, 제조를 용이하게 할 수 있는 장점이 있다. In addition, the optical recording medium according to the present invention has an advantage of preventing the penetration of moisture into the recording layer without forming a separate protective layer, thereby reducing the manufacturing cost and facilitating manufacturing.

또한 본 발명에 따른 광기록매체는 별도의 보호층을 형성하지 않고 인쇄막이 수분 침투를 방지하는 역할을 수행하여 광기록매체의 두께를 감소시킬 수 있는 장점이 있다.In addition, the optical recording medium according to the present invention has an advantage of reducing the thickness of the optical recording medium by performing a role of preventing the penetration of the printing film without forming a separate protective layer.

Claims (3)

레이저 빔이 조사되어 기록층 내에서 주변 물질과 다른 반사도를 갖는 새로운 물질이 생성되는 메커니즘으로 정보를 기록하는 광기록매체에 있어서,An optical recording medium for recording information by a mechanism in which a laser beam is irradiated to generate a new material having a different reflectance from a surrounding material in a recording layer. 기판;Board; 상기 기판의 상부에 위치하여 입사하는 상기 레이저 빔을 반사하는 반사층;A reflection layer positioned on the substrate and reflecting the incident laser beam; 상기 반사층의 상부에 위치하는 기록층; 및A recording layer located above the reflective layer; And 상기 기판의 하부에 수분 침투 방지 도료가 포함된 염료로 인쇄된 인쇄막을 포함하는 것을 특징으로 하는 광기록매체.And a printed film printed with a dye including a moisture permeation prevention paint on a lower portion of the substrate. 제 1 항에 있어서, The method of claim 1, 상기 수분 침투 방지 도료는 유성의 광경화성 잉크류인 것을 특징으로 하는 광기록매체.And the water permeation preventing paint is an oil-based photocurable ink. 제 1 항에 있어서, The method of claim 1, 상기 수분 침투 방지 도료는 실리카가 포함된 도료인 것을 특징으로 하는 광기록매체.The water permeation prevention paint is an optical recording medium, characterized in that the paint containing silica.
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