专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明专利

JPH01258243A INTERCHANGE TYPE REWRITABLE OPTICAL DISK 失效
公开(公告)号：JPH01258243A
公开(公告)日：1989-10-16
申请号：JP8516188
申请日：1988-04-08
申请人： FUJITSU LTD
发明人： UCHIUMI KENICHI , ETSUNO NAGAAKI , GOTO YASUYUKI , TSUGAWA IWAO , NAKADA MASAHIRO
IPC分类号： B41M5/26 , G11B7/007 , G11B7/09 , G11B7/24 , G11B7/243
摘要： PURPOSE:To obtain the rewritable optical disk which allows reading out with a reproduction-only player by providing grooves to the surface of a disk substrate and previously increasing the reflectivity of the peak parts between the recesses at the time of recording or reading out information along the recesses of the grooves. CONSTITUTION:A recording film 13 is formed by vacuum vapor deposition of, for example, In and Sb on the grooved substrate 11. The initial reflectivity of the disk is about 40% in the flat part. The reflectivity increases to about 60% when the disk is irradiated by strong laser beam pulses. In succession, when the disk is irradiated by the weak laser beam, the reflectivity returns to the initial value of 40%. Rewriting is, therefore, possible if the high reflectivity state is used as a recording state and the low reflectivity state as an erasing state. The reflectivity is increased to about 1.5 times by rotating this disk and causing the peak parts to be irradiated by the laser beam. The disk recorded with the information in the prescribed format in the groove parts 12 allows reproduction with the reproduction-only player as well.

12. 发明专利

JPS63298716A RECORDING AND REPRODUCING METHOD OF OPTICAL DISK 失效
公开(公告)号：JPS63298716A
公开(公告)日：1988-12-06
申请号：JP1799787
申请日：1987-01-28
申请人： FUJITSU LTD
发明人： UCHIUMI KENICHI , ETSUNO NAGAAKI , GOTO YASUYUKI , TSUGAWA IWAO
IPC分类号： G11B7/00 , G11B7/004 , G11B7/0055 , G11B7/30
摘要： PURPOSE:To obtain a high reproduction output by applying recording and erasure of information from the side of base formed with a recording layer, and applying the reproduction of information from the substrate side opposed thereto via an air layer. CONSTITUTION:The structure of a 1st transparent substrate 1 with a recording layer 2 formed thereupon as a film is devised such that a spacer 3 is used, and it is adhered to a 2nd transparent substrate 4 via an air layer with a prescribed thickness. Then the recording and erasure of information by the radiation of a laser beam 6 are applied from the side of the 1st transparent substrate 1 and the reproduction of information is applied from the side of the 2nd transparent substrate 4. Thus, the sensitivity in the recording/reproduction is high and an optical disk with a high reproduction output is obtained. Since a small output is enough for the reproduction, the thermal change of the recording layer 2 due to absorption of light is suppressed, and the reliability is improved.

13. 发明专利

JPS63155424A INFORMATION REWRITING METHOD FOR OPTICAL DISK 失效
公开(公告)号：JPS63155424A
公开(公告)日：1988-06-28
申请号：JP30161486
申请日：1986-12-19
申请人： FUJITSU LTD
发明人： ETSUNO NAGAAKI , UCHIUMI KENICHI , GOTO YASUYUKI , TSUGAWA IWAO , YUASA TETSUYA
IPC分类号： G11B7/00 , G11B7/30
摘要： PURPOSE:To simply and with high accuracy rewrite the information of an optical disk by using a clock signal of a disk in which information is recorded in advance, and reading the information recorded in the disk immediately before recording at the time of rewriting the information. CONSTITUTION:With respect to an optical disk in which an information signal containing a clock is recorded in advance, of all, signal is reproduced by a light beam for read-out, and a fundamental clock signal is taken out therefrom. Subsequently, this fundamental clock signal is compared with a reference clock signal, and if a shift exists between the clock signal, the revolving speed of a motor is controlled so as to correct the shift. When a signal recorded in advance is that which is recorded at a prescribed peripheral velocity, information is rewritten at the same prescribed peripheral velocity by this control. Accordingly, the peripheral velocity of the optical disk of recording the information can be controlled by a simple device.

14. 发明专利

JPS6373199A X-RAY PICTURE CONVERSION SHEET 失效
公开(公告)号：JPS6373199A
公开(公告)日：1988-04-02
申请号：JP21731286
申请日：1986-09-17
申请人： FUJITSU LTD
发明人： HIRANO HIROSHI , UCHIUMI KENICHI , ETSUNO NAGAAKI , OGAWA SEIYA
IPC分类号： G21K4/00 , C09K11/61

15. 发明专利

JPS62257646A PRODUCTION OF OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS62257646A
公开(公告)日：1987-11-10
申请号：JP9808186
申请日：1986-04-30
申请人： FUJITSU LTD
发明人： SHIODA AKIRA , UCHIUMI KENICHI , ETSUNO NAGAAKI , GOTO YASUYUKI , TSUGAWA IWAO
IPC分类号： G11B7/26
摘要： PURPOSE:To smooth the boundary between an underlying film consisting of a transparent dielectric and a recording film and to improve the sensitivity (recording speed) of an optical recording medium by forming the underlying film on a substrate, then subjecting the underlying film to a heat treatment at and for a specific temp. and time and forming the optical recording film on the underlying film. CONSTITUTION:The transparent dielectric is used for the material of the underlying film of the recording film to be formed on the substrate and is exemplified by CeO2, SnO2, TiO2, ZnS, etc., having a high refractive index. After the underlying film is formed by a vacuum film forming method such as sputtering or vapor deposition method, the underlying film is subjected to the heating treatment for 5-200min at the temp. in a 60-200 deg.C range and the recording film is formed on the underlying film; further, the protective film is formed thereon. The ruggedness on the surface is thereby smoothed and the surface film is removed, by which the impurities in the film are removed and the factors to prohibit the migration of the atoms or molecules in the recording film are decreased. As a result, the speed of recording (erasure) is improved.

16. 发明专利

JPS62257643A REWRITABLE TYPE OPTICAL DISK 失效
公开(公告)号：JPS62257643A
公开(公告)日：1987-11-10
申请号：JP9807986
申请日：1986-04-30
申请人： FUJITSU LTD
发明人： TSUGAWA IWAO , GOTO YASUYUKI , SHIODA AKIRA , UCHIUMI KENICHI , ETSUNO NAGAAKI
IPC分类号： B41M5/26 , G11B7/24
摘要： PURPOSE:To prevent the deterioration and deformation of a substrate occurring in the heat of a laser beam and to remarkably improve an information rewriting characteristic by using the substrate consisting of a photosensitive resin layer and heat resistant base body. CONSTITUTION:The photosensitive resin layer 2 is formed on the glass base body 1 which is the heat resistant base body to constitute the substrate 3 for an optical disk. Optical guide grooves are formed on the photosensitive resin layer 2 and an optical recording medium film 4 is formed thereon. A protective film 5 is formed on the optical recording medium 4. The photosensitive resin is the resin cured by the irradiation of UV rays, etc., and is, for example, preferably an acrylic resin. The material to constitute the optical recording medium film is an alloy of elements of >=2 components to exhibit an eutectic phenomenon or a material having a compd. compsn. and may not only be a binary comps. such as, for example, In-Sb or Al-Ca but also be ternary and quaternary compsn. The protective film to be formed on the optical recording medium film is of an org. high-polymer material, oxide, nitride, etc. which do not adversely affect the optical recording medium.

17. 发明专利

JPS62218900A RADIATION PICTURE CONVERSION ELEMENT AND METHOD 失效
公开(公告)号：JPS62218900A
公开(公告)日：1987-09-26
申请号：JP6092886
申请日：1986-03-20
申请人： FUJITSU LTD
发明人： HIRANO HIROSHI , UCHIUMI KENICHI , SHIODA AKIRA
IPC分类号： G21K4/00 , C09K11/61 , G01T1/00 , G03B42/02

18. 发明专利

JPS62102447A PRODUCTION OF OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS62102447A
公开(公告)日：1987-05-12
申请号：JP24314285
申请日：1985-10-30
申请人： FUJITSU LTD
发明人： UCHIUMI KENICHI , SHIODA AKIRA , HIRANO HIROSHI , ETSUNO NAGAAKI
IPC分类号： G11B7/26
摘要： PURPOSE:To exactly control the compsn. ratio of an In-Sb alloy film with food productivity by separately depositing two elements by evaporation on a substrate then subjecting the film to a heat treatment. CONSTITUTION:In is deposited by evaporation to 18nm on the acrylic substrate and while the vacuum is not broken, Sb is deposited by evaporation to 32nm thereon to form the film having 50nm total film thickness and 4:6 molar ratio of In and Sb. Such substrate is annealed for 2hr at 60 deg.C. Since the In atoms are easily diffusible in the metal, the uniform alloy from is formed by annealing in spite of the separated vapor deposition. The thin In-Sb alloy film having the exactly controlled compsn. ratio is thus obtd.

19. 发明专利

JPS61271637A PATTERN FORMING METHOD 失效
公开(公告)号：JPS61271637A
公开(公告)日：1986-12-01
申请号：JP11133785
申请日：1985-05-25
申请人： FUJITSU LTD
发明人： HIRANO HIROSHI , UCHIUMI KENICHI , SHIODA AKIRA
IPC分类号： G11B7/26
摘要： PURPOSE:To prevent generation of defect such as pin holes by using the X-ray exposure technology so as to form a pre-group of an optical disc base thereby constituting all processes by a dry process. CONSTITUTION:A cross-linked PMMA 2 is deposited onto the optical disc base 1 made of glass, an X-ray exposure mask 3 is placed on it, an X-ray is irradiated to the front face to bake a pattern 4 of a mask 3 to the PMMA layer 2. Then the pattern formed to the layer 2 is developed to leave behind a pattern 2' of an X-ray irradiated part on the base 1. In order to form directly the pre- group to the base 1, the base 1 is subject to plasma etching by using the PMMA pattern 2' as a mask to form pits 5 of the pattern corresponding to the X-ray unirradiated part. Thus, all processes are formed by the dry process, no solvent is required and the pre-group without defect such as pin holes is obtained.

20. 发明专利

JPS61227238A MEDIUM AND METHOD FOR OPTICAL INFORMATION RECORDING 失效
公开(公告)号：JPS61227238A
公开(公告)日：1986-10-09
申请号：JP6798385
申请日：1985-03-30
申请人： FUJITSU LTD
发明人： ETSUNO NAGAAKI , UCHIUMI KENICHI , SHIODA AKIRA , GOTO YASUYUKI , MAEDA KIYOMI
IPC分类号： G11B7/243 , G11B7/00 , G11B7/24 , G11B7/30 , G11C13/04
摘要： PURPOSE:To make possible erasing and recording at a high speed and the stable holding of information for a long period of time by irradiating two kinds of light pulses having different powers and time intervals to a thin film consists of the assem blage of the fine crystals having regular atomic configuration and in which >=2 stable states having a difference in optical characteristic exist. CONSTITUTION:The film for recording consists of a material having the compsn. which consists of a combination of >=2 components of elements exhibiting an eutectic state and is expressed as the mixture composed of the pure elements or compds. adjacent to the eutectic point on the equil. diagram thereof. The film right after the preparation consists of the assemblage of the extremely fine crystals in the amorphous film in which the elements X and Y are mixed in atomic order. The micro-part of the film is melted when the micro-part of the film is heated by irradiating the strong laser light converged to about 1mum diameter to such film. The amorphous or fine crystal state in which the elements X, Y are mixed in the part except the part irradiated with the light, designated as 1', the fine crystal of X as 2', the Y crystal mixed with the X fine crystal as 3' and the mixed state of the fine crystals of the X element and Y element contg. much X element as 4' can be transformed to each other.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式