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41. 发明专利

JPH0455497A SLIDING PART MATERIAL 失效
公开(公告)号：JPH0455497A
公开(公告)日：1992-02-24
申请号：JP16427490
申请日：1990-06-25
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： UKITA HIROO , FUJIMORI SUSUMU , NAKADA HIROSHI , SUGIYAMA YASUYUKI
IPC分类号： F16C33/12 , C10M103/00 , C10N10/06 , C10N40/02 , C10N40/14 , C10N50/08 , G11B7/09 , G11B21/21
摘要： PURPOSE:To obtain a sliding part material having improved wearing properties and sliding properties by using a SiN material (main component) as a part material of a sliding mechanism and a material comprising AlN, SiC-diamond or AlN having diamond-coated surface, etc., as the other part material. CONSTITUTION:A material of SiN or a material containing SiN as a main component is used to a part material of a sliding mechanism (e.g., shaft surface of optical head actuator or surface-protecting film of recording medium) and a material of AlN, SiC-diamond, AlN surface-coated with diamond or SiC surface-coated with diamond is used to the other part material (e.g., bearing sliding with said shaft surface or hover slider) to afford the objective sliding part material.

42. 发明专利

JPH0333221B2 失效
公开(公告)号：JPH0333221B2
公开(公告)日：1991-05-16
申请号：JP8418383
申请日：1983-05-16
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJIMORI SUSUMU , YAMAZAKI HIRONORI , ASANO YOSHIHIRO
IPC分类号： G01N25/18

43. 发明专利

JPH0312824A METHOD FOR RECORDING/ERASING/REPRODUCING AND CONSTITUTING PHASE CHANGE TYPE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH0312824A
公开(公告)日：1991-01-21
申请号：JP14689489
申请日：1989-06-12
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： SUGIYAMA YASUYUKI , FUJIMORI SUSUMU , YAMAZAKI HIRONORI , CHIBA REIICHI
IPC分类号： B41M5/26 , G11B7/00 , G11B7/0055 , G11B7/125 , G11B7/24 , G11B7/30
摘要： PURPOSE:To make both the recording sensitivity and signal contrast of the medium compatible by using the laser beam of a long wavelength for recording and erasure and the laser beam of a short wavelength for reproduction. CONSTITUTION:An undercoat 4, a recording layer 2, an overcoat 3 and a metallic reflecting layer 5 are laminated on a substrate 1. Normally, the undercoat 4 and the overcoat 3 are provided for preventing the unreversible deformation of a medium and are called protection layers, whereby they are constituted by dielectric of SiO2, ZnS and the like. The metallic reflecting layer 5 is added for increasing the absorption of the medium and for increasing optical enhancement effect, and the materials of Al, Au and the like are used. The laser beam of the long wavelength is used for recording and erasure, and the laser beam of the short wavelength for reproduction so as to improve sensibility and contrast in different wavelengths. Thus, optical interference effect can be drawn in a maximum and the both can be made compatible.

44. 发明专利

JPH02152036A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH02152036A
公开(公告)日：1990-06-12
申请号：JP30715888
申请日：1988-12-05
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： CHIBA REIICHI , FUNAKOSHI NORIHIRO , FUJIMORI SUSUMU , SUGIYAMA YASUYUKI
IPC分类号： G11B7/24
摘要： PURPOSE:To suppress the stripping of an optical recording layer and transparent protective layer from a transparent substrate and the peeling between the respective layers by forming the inner edges and outer edges of the optical recording layer and transparent protective layer formed on the transparent substrate within stripping suppressing regions. CONSTITUTION:The stripping suppressing regions 2 formed with rugged marks 10 of groove or pit shapes are provided on the transparent substrate in the region on the outer or inner side of a data recording region 1 or the regions on both thereof. The regions 2 are so formed that the inner and outer edges of an underlying layer 5, the optical recording layer 4, the transparent protective layer 6, an Al reflecting layer 7, and a resin layer 8 are respectively stripped and are confined within these regions at the time of film formation. The respective layers are stripped and are, therefore, intruded into the grooves or pits of the rugged marks 10 formed in the suppressing regions 2 at the time of the film formation. The mechanically secure bond to the transparent substrate is eventually created. The stripping of the layers from the transparent substrate or the peeling between these layers is thus suppressed.

45. 发明专利

JPH01303643A LASER RECORDING MEDIUM 失效
公开(公告)号：JPH01303643A
公开(公告)日：1989-12-07
申请号：JP13280488
申请日：1988-06-01
申请人： NIPPON TELEGRAPH & TELEPHONE , SUMITOMO METAL MINING CO , SUMITOMO CHEMICAL CO
发明人： FUJIMORI SUSUMU , YAMAZAKI HIRONORI , FUNAKOSHI NORIHIRO , NAKAMURA NOBUO , OKA KOICHI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243
摘要： PURPOSE:To obtain the rewriting type medium of high performance which satisfies long-term stability (stability in an amorphous state at room temp.) and high-speed erasing property by using a specific Sb-Te alloy film as a recording medium. CONSTITUTION:The alloy film consisting of the compsn. expressed by the formula (Sb1-xTex)1-yMy is used as the recording layer. In the formula, x is in a 0.1

46. 发明专利

JPH01277339A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH01277339A
公开(公告)日：1989-11-07
申请号：JP10694288
申请日：1988-04-28
申请人： NIPPON TELEGRAPH & TELEPHONE , SUMITOMO CHEMICAL CO , SUMITOMO METAL MINING CO
发明人： FUJIMORI SUSUMU , FUNAKOSHI NORIHIRO , YAMAZAKI HIRONORI , YAGI IKUTAKE , NAKAMURA NOBUO , OKA KOICHI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243
摘要： PURPOSE:To provide the recording medium having the long-period preservable property of recording and the high-speed erasing property of recording in combination by providing a recording layer consisting of an alloy of an A-Te system in which A is selected from As, Bi and Sb and which is of a single phase. CONSTITUTION:The recording layer consisting of the alloy (excluding the compds. of stoichiometric compsn.) of the A-Te system in which A is selected from the As, Bi and Sb and which is of the single phase. The representative examples of the alloy compsn. include AsxTe1-x (0.45

47. 发明专利

JPH01220146A INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH01220146A
公开(公告)日：1989-09-01
申请号：JP4236788
申请日：1988-02-26
申请人： NIPPON TELEGRAPH & TELEPHONE , FUJI PHOTO FILM CO LTD
发明人： FUJIMORI SUSUMU , YAMAZAKI HIRONORI , FUNAKOSHI NORIHIRO , SAWANO MITSURU , TAKAHASHI YONOSUKE
IPC分类号： B41M5/26 , C03C17/06 , G11B7/24 , G11B7/243
摘要： PURPOSE:To obtain the medium which allows easy reading and has high reading accuracy and erasing efficiency by specifying the ratio of Sb and Te of an Sb-Te alloy forming a recording layer to a specific range. CONSTITUTION:The ratio of the Sb and Te of the Sb-Te alloy forming the recording layer is specified to the 61:39-52:48 range by number of atoms. The writing even with a small laser power is thereby enabled. Further, the speed and contrast of the transition of the amorphous state and the crystal state is large and, therefore, the medium having the high reading speed and erasing efficiency is obtd.

48. 发明专利

JPS637618B2 失效
公开(公告)号：JPS637618B2
公开(公告)日：1988-02-17
申请号：JP14820980
申请日：1980-10-24
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJIMORI SUSUMU , TAKEI KOJI , MAEBOTOKE SAKAE , NAGAI KAZUTOSHI
IPC分类号： G01N25/18

49. 发明专利

JPS62259890A OPTICAL RECORDING MEDIUM AND ITS PREPARATION 失效
公开(公告)号：JPS62259890A
公开(公告)日：1987-11-12
申请号：JP9165886
申请日：1986-04-21
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： FUJIMORI SUSUMU , FUNAKOSHI NORIHIRO , YAMAZAKI HIRONORI
IPC分类号： B41M5/28 , B41M5/26 , B41M5/30 , B41M5/36 , G11B7/24 , G11B7/243 , G11B7/26
摘要： PURPOSE:To perform the recording and erasion of information with high contrast and to obtain the excellent long-term storage stability of recording information, by irradiating the recording layer formed on a substrate with light to make the same amorphous and successively crystallizing said layer to initialize the same. CONSTITUTION:After an SiO2 film was formed on a substrate 1, for example, using a polycarbonate resin plate as an undercoat layer 2, an Sb-Te alloy film 3 is formed and, further, an SiO2 film is formed as an overcoat layer 4. Subsequently, if this recording medium is adhered, for example, to an acrylic resin plate 6 through a photocurable resin layer 5, the part of the Sb-Te alloy film of the recording medium comes to the intermediate state between a crystalline state and an amorphous state in an as-depo state to generate initial crystallization and, therefore, laser heating is performed. Laser beam transmits through the substrate, the SiO2 overcoat layer and the undercoat layer to be absorbed only by the Te-alloy film and, therefore, if laser beam of a short pulse is allowed to irradiate, heating can be performed so as to generate amorphous and crystalline states. An optical disk subjected to initialization generates no reversal of a signal after erasion and a writing/erasing signal level is stabilized.

50. 发明专利

JPS62208442A REWRITING TYPE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS62208442A
公开(公告)日：1987-09-12
申请号：JP5011786
申请日：1986-03-07
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 make a substantial amorphous life and substantially high erasing speed compatible by constituting an optical recording layer of an alloy film essentially consisting of Te and In and contg. at least one kind of element selected from an element group consisting of Se, Ge, As, Ga, Sb, S, Au, Cu, Pb, and Pd. CONSTITUTION:A transparent substrate 1 consists of glass or plastic and is provided with an underlying layer 2 consisting of a transparent vapor deposited SiO film, thin alloy film 3 of the recording layer, and a protective layer 4 consisting of a transparent vapor deposited SiO film. The optical recording layer 3 consists of the alloy film essentially consisting of Te and In and contg. at least one kind of the element selected from the element group consisting of Se, Ge, As, Ga, Sb, S, Au, Cu, Pb, and Pd. The recording layer consists of the alloy layer which contains the essential components Te and In in a 1:1-9:1 range by atomic content ratio and contains at least one kind of the additive element selected from the above-mentioned element group in a 3-30at% range in addition to the Te and In. The recording layer is thereby kept amorphous and stable at a room temp. and is quickly crystallized at a high temp. by irradiation of laser light.

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