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1. 发明专利

JP2008287880A Optical recording medium 有权
标题翻译：光学记录介质
公开(公告)号：JP2008287880A
公开(公告)日：2008-11-27
申请号：JP2008194022
申请日：2008-07-28
申请人： Sony Corp , ソニー株式会社
发明人： KASHIWAGI TOSHIYUKI , SAKAMOTO TETSUHIRO , OSATO KIYOSHI
IPC分类号： G11B7/24 , G11B7/095 , G11B7/244 , G11B7/253 , G11B7/254 , G11B7/257 , G11B7/26
CPC分类号： G11B7/252 , G11B7/0956 , G11B7/24053 , G11B7/24056 , G11B7/24067 , G11B7/2433 , G11B7/2533 , G11B7/2534 , G11B7/2542 , G11B7/2548 , G11B7/2585 , G11B7/26 , G11B2007/24304
摘要： PROBLEM TO BE SOLVED: To provide an optical recording medium which suppresses a skew so as to enhance recording and/or reproduction characteristics, and enables a further higher recording density. SOLUTION: The optical recording medium includes a recording layer and a light-transmitting layer 4 successively formed on one side of a substrate, so that a light is applied from the side of this light-transmitting layer 4 for performing information recording and/or reproduction. On the opposite side of the substrate to the side having the light-transmitting layer 4, a water-proof film 5 consisting of at least one layer consisting of metal, an alloy, a dielectric film and an organic film is formed, and a corrosion preventing film 6 made of an acrylic urethane based UV curing resin is formed on the water-proof film 5. If the light-transmitting layer 4 has a thickness t=3 to 177 (μm) in an information signal section wherein at least an information signal is recorded in the recording medium, and a thickness fluctuation of the light-transmitting layer is Δt, Δt ≤±5.26 (λ/NA 4 ) (μm) (wherein NA is a numerical aperture and λ is a wavelength of the recording/reproduction optical system) is satisfied. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供抑制偏斜以提高记录和/或再现特性的光记录介质，并且能够进一步提高记录密度。解决方案：光记录介质包括依次形成在基板的一侧的记录层和透光层4，从而从该透光层4的侧面施加光以进行信息记录， /或繁殖。在与具有透光层4的一侧的基板的相反侧，形成由至少一层由金属，合金，电介质膜和有机膜组成的防水膜5，并且形成腐蚀在防水膜5上形成由丙烯酸类氨基甲酸酯类UV固化树脂制成的防止膜6的膜。如果透光层4在信息信号部分中的厚度t = 3至177（μm），其中至少信息信号被记录在记录介质中，透光层的厚度波动为Δt，Δt≤±5.26（λ/ NA 4 ）（μm）（其中NA为数值孔径，λ 是记录/再现光学系统的波长）。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2002042376A OPTICAL DISK 审中-公开
公开(公告)号：JP2002042376A
公开(公告)日：2002-02-08
申请号：JP2001230425
申请日：2001-07-30
申请人： SONY CORP
发明人： YAMAZAKI TAKESHI , YUKIMOTO TOMOMI , FURUKI MOTOHIRO , KASHIWAGI TOSHIYUKI
IPC分类号： G11B7/24 , G11B7/254 , G11B7/257
摘要： PROBLEM TO BE SOLVED: To provide an optical disk having a light-transmitting layer of uniformly thin thickness. SOLUTION: The light-transmitting layer of this optical disk is obtained by sticking a transparent film 2 on a substrate 1, while a pressure-sensitive self-adhesive sheet 3 or a dry photopolymer sheet is interposed between the film 2 and the substrate. The first signal recording surface 1a is formed on the sticking surface of the substrate 1, and the second signal recording surface 2a is formed on the sticking surface of the film 2. Information signals are recorded on the surfaces 1a, 2a and/or reproduced from the surfaces 1a, 2a from the light-transmitting layer, which consists of the sheet 3 or the dry photopolymer sheet and the film 2 side.

3. 发明专利

JP2000251324A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2000251324A
公开(公告)日：2000-09-14
申请号：JP5186399
申请日：1999-02-26
申请人： SONY CORP
发明人： KASHIWAGI TOSHIYUKI
IPC分类号： G11B7/24 , G11B7/135 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To obtain high recording density by making a disk substrate thin and to make the disk substrate compatible with the substrate which is not made thin by sticking a couple of disk substrates together and making the couple of disk substrates thicker for a part where inner-peripheral side recording layers are not formed than a part where the recording layers are formed. SOLUTION: The optical disk 1 is constituted by sticking disk bodies 1a and 1b, having recording layers and protection layers formed on the main surfaces of their substrates via an adhesive layer 65 with the recording layers inside. Here, the disk bodies 1a and 1b in symmetrical structure are so constituted that a hold part 7 which has no inner-peripheral side recording layer formed and which is held on an optical recording. The reproducing device is made thicker than the thickness T2 of a recording part 8 which has a recording layer and severs as a signal recording are. Consequently, high recording density is obtained by reducing the thickness T2 of the recording part 8 and compatibility is obtained by equalizing the thickness T1 of the hold part 7 to the thickness of an existent optical disk.

4. 发明专利

JP2000235734A OPTICAL RECORDING MEDIUM AND ITS PRODUCTION 失效
公开(公告)号：JP2000235734A
公开(公告)日：2000-08-29
申请号：JP3325699
申请日：1999-02-10
申请人： SONY CORP
发明人： ARAKAWA NORIYUKI , KUROUSU ASAO , AKIYAMA YUJI , KASHIWAGI TOSHIYUKI
IPC分类号： G11B7/24 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To prevent deformation in a substrate such as warpage and shrinkage, to ensure satisfactory rotating performance and to attain satisfactory adaptation to the increase of recording density by laminating two or more 1st and 2nd resin layers which transmit incident light and comprise different materials different from each other in physical and/or mechanical characteristics to form the substrate. SOLUTION: A signal recording layer 3, a light reflecting layer 4 and a protective coat 5 are successively laminated on a substrate 2 to obtain the objective optical disk. The substrate 2 has a sandwich structure obtained by forming 1st and 2nd skin layers 6a, 6b on both principal faces of a core layer 7. The skin layers 6 are formed with a material having a lower water absorption than the core layer 7 so as to inhibit the warpage of the optical disk. The core layer 7 is formed with a material having a higher glass transition temperature and a larger mechanical internal loss than the skin layers 6 so as to inhibit the warpage of the optical disk even at a high temperature and to prevent the resonance phenomenon of the optical disk in rotation.

5. 发明专利

JP2000207786A STAMPER FOR OPTICAL DISCS AND MANUFACTURING APPARATUS USING THE SAME 失效
公开(公告)号：JP2000207786A
公开(公告)日：2000-07-28
申请号：JP466099
申请日：1999-01-11
申请人： SONY CORP
发明人： KASHIWAGI TOSHIYUKI , ARAKAWA NORIYUKI , TOYOKAWA MITSURU
IPC分类号： G11B7/26
摘要： PROBLEM TO BE SOLVED: To avoid abnormally deforming an optical disc by that the thickness of a stamper for the optical disc shows a specified range value, information signals can be recorded and/or reproduced by only an information signal recorder and/or playback unit meeting specified relations. SOLUTION: Information signals are formed on a light receiving surface of an optical disc which receives a light emitted from an information signal recorder and/or playback unit having a light source and a lens for refracting a light from this light source. In an optical disc manufacturing apparatus having the stamper for the optical disc used here, the stamper is about 0.4-1.5 mm thick, the information signals can be recorded and/or reproduced by only an information signal recorder and/or playback unit meeting specified relations, and by setting the stamper's thickness in this range, it is never greatly deformed due to the heat, stress, etc., of resins.

6. 发明专利

JPH1125510A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH1125510A
公开(公告)日：1999-01-29
申请号：JP17264197
申请日：1997-06-27
申请人： SONY CORP
发明人： KASHIWAGI TOSHIYUKI , SAKAMOTO TETSUHIRO
IPC分类号： G11B7/24 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To reduce face wobbling and eccentricity, to improve a recording/ reproducing characteristic and to enable to have high density recording by preventing a projection of a height 0.1 mm or above from existing in a clamping area supported with a supporting body of an inner peripheral side of a substrate. SOLUTION: An optical recording medium 1 is provided with a reflection film 3 and a light transmission layer 4 on the main surface side of the disk like substrate 2, and is provided with the clamping area 6 supported by the supporting body on the inner peripheral side of the substrate 2. The clamping area 6 is formed within the range of diameter 26-33 mm in the case of a reproduction exclusive optical disk of a diameter 120 mm extent. When the projection 8 exists in the innermost peripheral part of the clamping area 6, a tilt angle θbecomes maximum. When the height h of the projection 8 is 0.1 mm or below, the tilt angle θ becomes 0.2 deg. or below, and it becomes within the allowable range even when the tilt angle due to a tilt of a player shaft is added. Further, an internal diameter of a central hole in the light transmission layer 4 easy to cause the projection is made larger than the diameter of the central hole on the substrate 11. Further, the matter that the light transmission layer 4 isn't formed in the clamping area 6 is preferred.

7. 发明专利

JPH10320850A PRODUCTION METHOD OF OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH10320850A
公开(公告)日：1998-12-04
申请号：JP12749797
申请日：1997-05-16
申请人： SONY CORP
发明人： SAKAMOTO TETSUHIRO , NAKANO ATSUSHI , KASHIWAGI TOSHIYUKI
IPC分类号： G11B7/26
摘要： PROBLEM TO BE SOLVED: To prevent the occurrence of obstructing the progress of coating liquid by a step section, to uniformly spread the liquid and to improve the uniformity of the film thickness by supplying the liquid so that it is completely spread over the section formed in the vicinity of the center section of a substrate main surface side, rotating the substrate within the surface direction, rotatively spreading the liquid and covering the main surface side. SOLUTION: A diameter D1 of a substrate 1 is 120 mm, a thickness T1 is 1.2 mm and a diameter D2 of a hole section 2 is 15 mm. At the center section of a main surface 1a, a projecting section 3, in which a diameter D3 is 30 mm and a thickness T2 is 1.5 mm, is provided and a step section 4 having a height of 0.3 mm is formed. Then, ultraviolet curing resin is supplied as the liquid in a ring manner and is spread over the section 4. Then, the substrate 1 is rotated, the liquid is rotatively expanded, a coating is performed and the resin is hardened by ultraviolet rays. Thus, the dispersion in the film thickness in a peripheral direction at a prescribed radius and the dispersion of the film thickness in a radial direction are reduced compared with the case in which the coating liquid is supplied in a ring manner to the substrate 1 having no section 3.

8. 发明专利

JPH10302310A OPTICAL RECORDING MEDIUM AND OPTICAL DISK DEVICE 失效
公开(公告)号：JPH10302310A
公开(公告)日：1998-11-13
申请号：JP10966297
申请日：1997-04-25
申请人： SONY CORP
发明人： KAWAKUBO SHIN , KASHIWAGI TOSHIYUKI , YASUDA KOICHI , KANEKO MASAHIKO
IPC分类号： G11B7/007 , G11B7/125 , G11B7/127 , G11B7/135 , G11B7/1372 , G11B7/24 , G11B7/254 , G11B7/257
摘要： PROBLEM TO BE SOLVED: To provide an optical recording medium with which the recording of a larger capacity is possible. SOLUTION: This optical recording medium is constituted by forming a base 10 which consists of a thermoplastic resin and has a thickness of 0.3 to 1.2 mm, guide grooves 11 on this base 10, an information recording layer 15 which consists of at least a reflection film 13 and an org. dyestuff recording layer 14 successively on these guide groves 11 and a light transparent layer 12 of a thickness 10 to 177 μm. This optical recording medium is so formed that the relation of Δt ) (μm), (N.A. is a numerical aperture) is satisfied between the N.A. of an optical system for reproducing or recording and reproducing and a wavelength λwhen the unevenness of the light transparent layer thickness is defined as Δt.

9. 发明专利

JPH10269634A RECYCLE METHOD OF INFORMATION RECORDING MEDIUM SUBSTRATE, PRODUCTION OF THE MEDIUM AND INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH10269634A
公开(公告)日：1998-10-09
申请号：JP7321897
申请日：1997-03-26
申请人： SONY CORP
发明人： OKI YUTAKA , KASHIWAGI TOSHIYUKI , NAITO MITSUO
IPC分类号： G11B11/10 , G11B5/84 , G11B7/24 , G11B7/26 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To provide the recycle method of the substrate in which a recording layer is eliminated from an information recording medium, that is unnecessary, the substrate is made flat, a recording layer is newly formed and the medium is used as a new information recording medium. SOLUTION: The recording layer of an optical disk 10, which is unnecessary, is removed by a chemical and mechanical grinding method and the substrate is made flat. Then, a replica is formed on the substrate by a stamper using either a 2P method or a heat press-contacting method and a guide groove and information pits are transferred. Then, a reflection film or a recording film, a protective film and a printing film are formed so that the substrate is recycled and used as a new information recording medium. Moreover, if the surface characteristic of a substrate material is poor, the surface is made flat by a chemical and mechanical grinding method and the material is effectively used as a new information recording substrate material.

10. 发明专利

JPH09161313A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH09161313A
公开(公告)日：1997-06-20
申请号：JP31549295
申请日：1995-12-04
申请人： SONY CORP
发明人： KASHIWAGI TOSHIYUKI , OBINATA KOKICHI , YAMAZAKI TAKESHI
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To prevent the peeling in the boundary part between a substrate and a transparent film by arranging the transparent film between information surfaces and selecting the transparent film in such a manner that its outer edge exists on the side inner than the outer edge of an optical recording medium. SOLUTION: The outer edge of the photosetting resin film 30 arranged on the substrate 1 is so selected as to come on the side inner than the outer edge of the substrate 1 and the inner edge of the photosetting resin film 30 is so selected as to come to the side inner than the inner edge of the substrate 1. In such a case, the generation of air bubbles 40 between the substrate 1 and the photosetting resin film 30 is effectively prevented and the peeling in the boundary part between the substrate 1 and the photosetting resin film 30 is effectively prevented. In addition, the generation of the air bubbles 40 between the substrate 1 and the photosetting resin film 30 is effectively prevented.

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