专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

21. 发明专利

JPH0254438A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH0254438A
公开(公告)日：1990-02-23
申请号：JP20578288
申请日：1988-08-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJIMORI SUSUMU , FUNAKOSHI NORIHIRO , CHIBA REIICHI , SUGIYAMA YASUYUKI
IPC分类号： B41M5/26 , G11B7/24
摘要： PURPOSE:To obtain the optical recording medium which is strong to the damage and wear of a medium surface and has high performance by forming a recording layer which is changed in state by absorption of light or the temp. rise by the absorption of light on a substrate and allowing the irradiation of light from the front surface side in proximity to the surface of the recording layer. CONSTITUTION:The optical recording medium which is recorded with information by the thermal effect or photon effect of light such as laser beam is constituted as the medium which allows recording by being irradiated not through the substrate formed thereon but from the medium side on the substrate and by bringing an optical head in proximity to the medium surface. Namely, the recording layer which is changed in state by the absorption of light or the temp. rise by the absorption of light is formed on the substrate. A dielectric layer which is hard and is mechanically strong or a protective film of a semiconductor layer is formed on at least the surface of the recording layer formed in such a manner. The problems with the recording medium of a surface recording type are thus solved and the optical recording medium which is strong to the damage and wear of the medium surface and has the high performance is obtd.

22. 发明专利

JPH026384A METHOD FOR PREPARING CRYSTALLINE ORGANIC THIN FILM 失效
公开(公告)号：JPH026384A
公开(公告)日：1990-01-10
申请号：JP13541788
申请日：1988-06-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , YOSHIDA TAKUJI , FUNAKOSHI NORIHIRO
IPC分类号： G02B6/13 , C07B63/00 , C30B23/02 , C30B29/54 , G02B5/30 , G02F1/35 , G02F1/355 , G02F1/361
摘要： PURPOSE:To make it possible to readily prepare a thin film without losing light polarizing properties, associating properties and nonlinear optical effects of an organic material by molecularly orienting an organic compound in a plane on a substrate using a Langmuir.Blogett(LB) membrane and growing a crystal in the vapor phase using the resultant LB membrane as a seed crystal. CONSTITUTION:A solution of an organic compound having functional group, e.g., 4,4',4'',4''-tetrakis(n-nonadecanoylamino)-nickel-phthalocyanine, for preparing a Langmuir.Blogett membrane (LB membrane) is spread on the surface of water, scooped up onto a substrate and applied to form an LB membrane. The resultant substrate is then decompressed in a vacuum chamber to grow a crystal from the organic compound in the vapor phase under the inner gas pressure of

23. 发明专利

JPH01240641A MANUFACTURE OF AMORPHOUS ALLOY-COATING STEEL PLATE 失效
公开(公告)号：JPH01240641A
公开(公告)日：1989-09-26
申请号：JP6480088
申请日：1988-03-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： HANDA TAKAO , MIYATA SHIGEMORI , FUNAKOSHI NORIHIRO
IPC分类号： C23C2/26 , C23C2/40
摘要： PURPOSE:To simultaneously execute the conversion of an alloy into amorphous one and the covering of a steel plate by the alloy and to improve the corrosion resistance, wear resistance, etc., of the steel plate by applying molten alloy onto the surface of the steel plate moving at the high speed and immediately immersing the same into a refrigerant. CONSTITUTION:In a crucible 2, an alloy is melted, is sprayed onto the surface of a steel plate 1 moving at the high speed from plural nozzles 3 and is uniformly applied onto the surface of the steel plate 1. The steel plate 1 is immediately immersed into a refrigerant such as cooling water 5. The molten metal is subjected to rapid solidification by the thermal radiation into the steel plate 1 and that into the cooling water 5, and is converted into amorphous one. By this method, the steel plate covered with an amorphous alloy having excellent characteristics can be obtd. The covering thickness is preferably regulated to 50-100mum in practice.

24. 发明专利

JPH01162247A REWRITING TYPE PHASE TRANSFER OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH01162247A
公开(公告)日：1989-06-26
申请号：JP32054187
申请日：1987-12-18
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUGIYAMA YASUYUKI , FUNAKOSHI NORIHIRO , FUJIMORI SUSUMU , CHIBA REIICHI
IPC分类号： G11B7/243 , B41M5/26 , G11B7/24
摘要： PURPOSE:To obtain a rewriting type phase transfer optical recording medium which has the excellent repeatability of recording and erasing and stability with age, is high in erasing speed, allows easy recording and has an excellent recording sensitivity by specifying the atom. number ratios of In and Te of the optical recording medium having the optical recording layer consisting of the alloy film which is composed of the In and Te. CONSTITUTION:The optical recording medium which is provided with the optical recording medium 1 consisting of the alloy film composed of the Ga and Te on a glass substrate 1 and has the atom. number ratio of the Ga and Te between 2:1 and 1:1 or between 2:3 and 1:3 can be lowered in m.p. and, therefore, allows easy recording and has the excellent recording sensitivity; in addition, said medium has the excellent repeatability of recording and erasing and the stability with age. The erasing speed is additionally increased by adding at least one among Ge, Sb, Sn, As, Se, Au, Pb, Ti, Pt, and Pb thereto.

25. 发明专利

JPS6411257A PHASE TRANSITION TYPE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS6411257A
公开(公告)日：1989-01-13
申请号：JP16650887
申请日：1987-07-03
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUGIYAMA YASUYUKI , FUNAKOSHI NORIHIRO , FUJIMORI SUSUMU , CHIBA REIICHI
IPC分类号： G03C1/72 , G11B7/243
摘要： PURPOSE:To maintain an initial crystal state and to increase a crystallization rate by forming an optical recording layer provided on a substrate of an alloy film consisting of In and Te and specifying the atomic number ratio of In and Te. CONSTITUTION:The optical recording layer 4 is provided via an underlying layer 3 on the substrate 2 and the optical recording layer 4 is formed of the alloy film consisting of In and Te. The atomic number ratio of In and Te is specified between 1:1 and 2:3. Since the atomic number ratio between 1:1 and 2:3 suffices in such a manner, the compsn. control at the time of formation is facilitated and the recording state is sufficiently stabilized at room temp. by using this alloy as the optical recording layer 4. The initial medium characteristic is thus maintained without being impaired even if writing and erasing are repeatedly executed; in addition, crystallization is executed by projection of a short period at the time of erasing by the projection of laser light.

26. 发明专利

JPS63259850A OPTICAL RECORDING METHOD 失效
公开(公告)号：JPS63259850A
公开(公告)日：1988-10-26
申请号：JP9327787
申请日：1987-04-17
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIDA TAKUJI , MORINAKA AKIRA , FUNAKOSHI NORIHIRO
IPC分类号： B41M5/26 , G11B7/00 , G11B7/0045 , G11B7/24 , G11B7/244
摘要： PURPOSE:To attain an optical recording method with the high recording density, a large S/N and a large rotatory polarization angle, by radiating the light to a thin film containing an optically active organic compound whose rotary polarization degree is varied by heating or with irradiation of light and therefore changing the rotatory polarization degree. CONSTITUTION:A recording layer 2 is produced by coating the polystyrene solution containing the dissolved spiropyrane serving as an optically active organic compound whose rotatory polarization is varied by heating or with irradiation of light onto an optical disk substrate 1 made of polycarbonate and containing a groove by a spin coating process. Then Al is vapor deposited on the layer 2 for formation of a reflecting layer 3. The ultraviolet light is radiated onto the optical disk through the substrate side to obtain a melocyanine type layer 2 so that the rotatory polarization degree is lost. In a recording mode the layer 2 is turned again into the spiropyrane type layer by means of a photomagnetic head and by the laser heating and a pit is formed. The recorded pit is read by the photomagnetic head and by the change of the rotatory polarization degree. Thus, it is possible to attain an optical recording method with the high recording density, a high S/N and a large rotatory polarizing angle.

27. 发明专利

JPS6396751A OPTICAL DISK SUBSTRATE WITH HUB FOR MAGNETIC CHUCKING 失效
公开(公告)号：JPS6396751A
公开(公告)日：1988-04-27
申请号：JP24267286
申请日：1986-10-13
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： MORINAKA AKIRA , FUNAKOSHI NORIHIRO , IWAZAWA AKIRA
IPC分类号： G11B7/24 , G11B23/00
摘要： PURPOSE:To attain mass production with high accuracy and low double refraction, by conjugating a hub part joining the hub part in which a metallic attracting plate for magnetic chucking is integrated with a resin, or the metallic attracting plate, and an optical disk plate, in the inside, or at the neighboring part of a center hole provided at the optical disk plate. CONSTITUTION:A substrate is manufactured so that two optical disks 63, 63 are bonded through a spacer 64, and conjugated so that resin made hub parts 61, 62 having attracting metallic plates 61, 61 are sandwiched in the inside of a center. And it is placed on a spindle board 66 having a magnet 67 at the outer peripheral part of a spindle, and is fixed by an attracting force acting between the magnet 67 and the metallic plate 61. Also, the area of the conjugating part 65 of the hub part 62 with the optical disk plate 63 is set as small as possible. Thus, by setting the conjugation of the optical disk plate 63 with the hub part 62 at a minimum area, it is possible to reduce the double refraction.

28. 发明专利

JPS6378351A ADHESION SEALING TYPE OPTICAL DISK AND ITS PRODUCTION 失效
公开(公告)号：JPS6378351A
公开(公告)日：1988-04-08
申请号：JP22208786
申请日：1986-09-22
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： IWAZAWA AKIRA , YAMAZAKI HIRONORI , FUJIMORI SUSUMU , FUNAKOSHI NORIHIRO
IPC分类号： C08G59/18 , C08G59/00 , C09J163/00 , G11B7/24 , G11B7/26
摘要： PURPOSE:To obtain an optical disk having a uniform sheet thickness distribution, high quality, high accuracy and high productivity by sticking substrates via a photosetting resin essentially consisting of a compd. having a glycidyl group. CONSTITUTION:The transparent substrates made of glass are stuck to each other via the photosetting resin essentially consisting of the compd. having the glycidyl group. The photosetting resin is a composite added with about 2-3% photopolymn. initiating catalyst which is ordinarily used for the compd. having the glycidyl group. The optical disk is, therefore, formed by discharging the photosetting resin essentially consisting of the compd. having the glycidyl group concentrically onto the surface of the optical disk, pressing the transparent substrates made of plastic or glass superposed on the surfaces of the optical disk to force spread the photosetting resin uniformly and photosetting the photosetting resin by projecting light thereto.

29. 发明专利

JPS6376120A ERASABLE TYPE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS6376120A
公开(公告)日：1988-04-06
申请号：JP21942186
申请日：1986-09-19
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： CHIBA REIICHI , FUNAKOSHI NORIHIRO , FUJIMORI SUSUMU
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243
摘要： PURPOSE:To enable an increase in frequencies of forming crystal nuclei near the m.p. and compatibility of erasing with short pulse laser light and longer recording life by providing an optical recording layer formed of an alloy film which consists essentially of Te and Au and contains at least one kind among In, Ga, Sb, Sn, As, Pb, and Ge. CONSTITUTION:This recording medium is provided with the substrate 1 and the optical recording layer 2 formed of the alloy film which consists essentially of Te and Au and contains at least one kind among In, Ga, Sb, Sn, As, Pb, and Ge. The alloy film is made of alloy film contg. >=25at% Te and 5-60at% Au. More specifically, said film is made of multi-element alloy using Au as the main additive to Te. As a result, the recording state is highly stable at room temp. and crystallization is made by the projection of the laser light for a short period at the time of erasing by said projection.

30. 发明专利

JPS62274063A FORMATION OF THIN ORGANIC FILM BY RADIATION OF LIGHT 失效
公开(公告)号：JPS62274063A
公开(公告)日：1987-11-28
申请号：JP11740686
申请日：1986-05-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YOSHIDA TAKUJI , MORINAKA AKIRA , FUNAKOSHI NORIHIRO
IPC分类号： C23C14/12 , C23C14/28
摘要： PURPOSE:To form a vapor deposited glassy org. film by executing vapor deposition while radiating light to an org. material which changes the color, structure, electron state, bond state and polarity when is irradiated with light. CONSTITUTION:1', 3', 3'-Trimethyl-6-nitrospiro[2H-1-benzopyrane-2,2'-indoline] or the like which changes the structure when is irradiated with UV rays is sued as the org. material to be deposited by evaporation. The inside of a bell-jar 11 is evacuated to a vacuum and a heating boat 17 is held at a prescribed temp. by a temp. controller 18. An extra-high pressure mercury lamp 14 or the like is used as a UV light source. The vapor deposition is executed while the UV light is radiated to the org. material in a gaseous state of the org. material on the heating boat. The type of the molecules of the org. material is converted to a merocyanine type and to paired ion type and therefore, the polarity thereof changes. As a result, the crystallization is prevented and the thin transparent glassy film is obtd.

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