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41. 发明授权

US5346761A Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica 失效
标题翻译：柔性磁记录介质，其具有含有具有磷酸基的聚氨酯树脂和沉淀二氧化硅的背衬涂层
公开(公告)号：US5346761A
公开(公告)日：1994-09-13
申请号：US60975
申请日：1993-05-14
申请人： Hermann Roller , Peter Engelhardt , Reinhold Baur , Michael Bobrich , Werner Latzel , Werner Lenz , Rudolf Suettinger
发明人： Hermann Roller , Peter Engelhardt , Reinhold Baur , Michael Bobrich , Werner Latzel , Werner Lenz , Rudolf Suettinger
IPC分类号： G11B5/66 , G11B5/73 , G11B5/733 , G11B5/735 , G11B5/00
CPC分类号： G11B5/733 , G11B5/735 , Y10S428/90 , Y10T428/259 , Y10T428/27 , Y10T428/2993 , Y10T428/2998 , Y10T428/31551
摘要： In flexible magnetic recording media consisting essentially of a web-like nonmagnetic substrate, the magnetic layer is applied to one main side of the web-like substrate and a backing coating formed on the opposite main side of the substrate from a polymeric binder and nonmagnetic fillers as well as supporting pigments, the backing coating contains a precipitated silica treated on the surface with a phosphate-containing polyurethane.
摘要翻译：在基本上由网状非磁性基材组成的柔性磁记录介质中，将磁性层施加到网状基底的一个主侧面上，并且在基体的相对的主侧上形成背衬涂层，该基底与聚合物粘合剂和非磁性填料以及支撑颜料，背衬涂层含有在表面上用含磷酸酯聚氨酯处理的沉淀二氧化硅。

42. 发明授权

US5318823A Polyester multilayered film for high-density magnetic disc 失效
标题翻译：用于高密度磁盘的聚酯多层膜
公开(公告)号：US5318823A
公开(公告)日：1994-06-07
申请号：US906294
申请日：1992-07-01
申请人： Shigeo Utsumi , Masashi Inagaki , Yuko Watanuki
发明人： Shigeo Utsumi , Masashi Inagaki , Yuko Watanuki
IPC分类号： B29C47/06 , B29K67/00 , B29L9/00 , B32B27/00 , B32B27/36 , C08L67/00 , G11B5/73 , G11B5/733 , B32B5/16 , D06N7/04
CPC分类号： B32B27/36 , G11B5/733 , Y10T428/24372 , Y10T428/25 , Y10T428/254 , Y10T428/259 , Y10T428/31786
摘要： A multilayered polyester film for high-density magnetic discs, comprising a layer of polyester (A) and a layer of polyester (B) having a thickness of not more than 3 .mu.m, being laminated on at least one side of the layer of polyester (A) and having specific surface characteristics.
摘要翻译：一种用于高密度磁盘的多层聚酯膜，其包含聚酯（A）层和厚度不大于3μm的聚酯（B）层，层压在聚酯层的至少一面上（A）并具有特定的表面特性。

43. 发明授权

US5096773A Biaxially oriented polyester film 失效
标题翻译：双面聚酯薄膜
公开(公告)号：US5096773A
公开(公告)日：1992-03-17
申请号：US532199
申请日：1990-06-01
申请人： Seiji Sakamoto
发明人： Seiji Sakamoto
IPC分类号： B29C55/12 , B29K67/00 , B29K105/16 , B29L7/00 , C08J5/18 , C08K3/20 , C08K3/22 , C08L67/00 , C08L67/02 , G11B5/73 , G11B5/733
CPC分类号： C08J5/18 , C08K3/22 , G11B5/7305 , C08J2367/02 , Y10S428/91 , Y10T428/25 , Y10T428/254 , Y10T428/257 , Y10T428/259 , Y10T428/31786
摘要： A biaxially oriented polyester film containing 0.05 to 3 wt % of agglomerates of primary particles of aluminum oxide having an average particle size of 5 to 40 nm, the agglomerates having an average particle size of 50 to 400 nm. The film of the present invention is excellent in the wear resistance against various members such as a metal pin, and suitable for various industrial purposes including a base film of a magnetic recording medium.

44. 发明授权

US5085915A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5085915A
公开(公告)日：1992-02-04
申请号：US640512
申请日：1991-01-11
申请人： Kazuaki Taga , Takeshi Tsuda , Hiroo Inaba , Hiroshi Ogawa
发明人： Kazuaki Taga , Takeshi Tsuda , Hiroo Inaba , Hiroshi Ogawa
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , G11B5/716 , G11B5/73 , G11B5/733
CPC分类号： G11B5/716 , G11B5/733 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/257 , Y10T428/259 , Y10T428/31786
摘要： A magnetic recording medium which comprises plurality of magnetic layers comprising at least first and second magnetic layers which are successively formed on a surface of a polyethylene terephthalate support, wherein said support contains inert inorganic particles having an average particle size of from 0.5 to 0.7 microns, a standard deviation of 0.1 microns or less and the surface of said support has a center line average roughness (Ra) of 16 nm or less and a density of protrusions (Ds) of 6000/mm.sup.2 or more in the case of protrusions of 0.7 microns of more.
摘要翻译：一种磁记录介质，其包括至少包含第一和第二磁性层的多个磁性层，所述磁性层依次形成在聚对苯二甲酸乙二醇酯载体的表面上，其中所述载体包含平均粒径为0.5至0.7微米的惰性无机颗粒， 0.1微米或更小的标准偏差，并且在0.7微米的突起的情况下，所述支撑体的表面的中心线平均粗糙度（Ra）为16nm以下，突起的密度（Ds）为6000 / mm2以上的更多。

45. 发明授权

US5039554A Process for preparing a backing layer of a magnetic recording medium which includes the predispersing of a fine .alpha.-Al.sub.2 O.sub.3 powder in a solvent containing a small amount of binder 失效
标题翻译：制备磁记录介质背衬层的方法，该方法包括将α-Al2O3粉末预分散在含有少量粘合剂的溶剂中
公开(公告)号：US5039554A
公开(公告)日：1991-08-13
申请号：US607775
申请日：1990-10-30
申请人： Tadashi Ishikuro , Hideaki Kosha , Masaaki Fujiyama
发明人： Tadashi Ishikuro , Hideaki Kosha , Masaaki Fujiyama
IPC分类号： G11B5/84 , C09D5/23 , C09D7/12 , G11B5/73 , G11B5/733 , G11B5/735
CPC分类号： G11B5/735 , G11B5/733 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/31609
摘要： A process for preparing a magnetic recording medium by the steps of (a) forming a magnetic layer on one surface of a non-magnetic support and (b) homogeneously dispersing an .alpha.-Al.sub.2 O.sub.3 power having an average particle size of about 0.1 .mu.m or less in a solvent containing a small amount of binder to form a dispersion, mixing the thus-prepared dispersion with a binder to provide a coating composition, and applying the coating composition to the opposite surface of the nonmagnetic support to form a backing layer. The magnetic recording medium has improved wear resistance, a low friction coefficient and excellent electromagnetic properties.
摘要翻译：一种制备磁记录介质的方法，它是通过（a）在非磁性载体的一个表面上形成磁性层的步骤和（b）均匀分散平均粒径约为0.1μm的α-Al2O3粉末或较少在含有少量粘合剂的溶剂中以形成分散体，将由此制备的分散体与粘合剂混合以提供涂料组合物，并将涂料组合物施加到非磁性载体的相对表面以形成背衬层。磁记录介质具有改进的耐磨性，低摩擦系数和优异的电磁特性。

46. 发明授权

US4965307A Polyester film 失效
标题翻译：聚酯薄膜
公开(公告)号：US4965307A
公开(公告)日：1990-10-23
申请号：US283327
申请日：1988-12-07
申请人： Kazuo Okabe , Katsumi Bokuta , Hiroyuki Morimoto
发明人： Kazuo Okabe , Katsumi Bokuta , Hiroyuki Morimoto
IPC分类号： B29C55/00 , C08J5/18 , G11B5/73 , G11B5/733
CPC分类号： C08J5/18 , B29C55/005 , G11B5/73 , G11B5/733 , B29K2067/00 , B29K2105/16 , C08J2367/00 , C08J2367/02
摘要： Polyester films with a good slitting property and good slipping property contain, in first and second embodiments, at least 0.005% by weight of calcium carbonate particles. The particle size S.sub.c of the polyester crystals, crystal face orientation index X.sub.i and the difference .DELTA.n between the refractive indices in the machine direction and in the transverse direction of the polyester film have a specific relationship, or the internal haze H, face orientation coefficient f.sub.n or the difference .DELTA.n between the refractive indices in the machine direction and in the transverse direction have a specific relationship. By satisfying the specific relationship, a good slitting property and good slipping property are obtained. A third embodiment provides a polyester film containing at least 0.005% by weight of calcium carbonate particles, which has a specific center line average roughness Ra, face orientation coefficient f.sub.n, the difference .DELTA.n between the refractive indices in the machine direction and in the transverse direction, and F-5 value in the transverse direction. By these characteristics, a good slitting property, good slipping property and good shaving property are obtained.
摘要翻译：在第一和第二实施方案中，具有良好切割性能和良好滑动性能的聚酯薄膜含有至少0.005重量％的碳酸钙颗粒。聚酯晶体的粒径Sc，晶面取向指数Xi和聚酯膜的机械方向和横向的折射率之间的差ΔTATAn具有特定关系，或内部雾度H，面取向系数 fn或机器方向和横向的折射率之间的差ΔTATA具有特定的关系。通过满足特定的关系，获得良好的切割性能和良好的滑动性能。第三实施方案提供了含有至少0.005重量％的碳酸钙颗粒的聚酯膜，其具有特定中心线平均粗糙度Ra，面取向系数fn，纵向折射率和横向折射率之间的差ΔTATA 方向和F-5值。通过这些特性，得到良好的切割性，良好的滑动性和良好的剃刮性。

47. 发明授权

US4876137A Polyethylene naphthalate film for high-density magnetic recording media of floppy disk 失效
标题翻译：聚萘二甲酸乙二醇酯薄膜用于高密度磁记录介质的软盘
公开(公告)号：US4876137A
公开(公告)日：1989-10-24
申请号：US98319
申请日：1987-09-18
申请人： Shigeo Utsumi
发明人： Shigeo Utsumi
IPC分类号： B32B27/36 , B29C55/12 , B29C55/14 , B29K67/00 , B29L7/00 , B29L9/00 , C08J5/18 , G11B5/73 , G11B5/733
CPC分类号： B29C55/143 , G11B5/7305 , B29K2067/00 , Y10S428/90 , Y10T428/24355 , Y10T428/31786
摘要： Disclosed herein is a polyethylene naphthalate film for high-density magnetic recording media of floppy disk which has little anisotropy, high mechanical strength and good dimensional stability, and which scarcely causes a drop out and has good productivity.
摘要翻译：本文公开了一种用于软磁盘的高密度磁记录介质的聚萘二甲酸乙二醇酯薄膜，其具有很小的各向异性，高机械强度和良好的尺寸稳定性，并且几乎不会导致脱落并且具有良好的生产率。

48. 发明授权

US4704650A Oriented sheet supports in a recording disc 失效
标题翻译：记录盘中的定向片支持
公开(公告)号：US4704650A
公开(公告)日：1987-11-03
申请号：US889974
申请日：1986-07-28
申请人： Nobuyuki Yamamoto
发明人： Nobuyuki Yamamoto
IPC分类号： C08L67/02 , G11B5/73 , G11B5/733 , G11B5/82 , G11B5/84
CPC分类号： G11B5/825 , G11B5/7305 , G11B5/84
摘要： A recording disc in which two recording sheets are bonded to bonding rings at the inner and outer periphery on both sides of a circular substrate with a recess between the recording portion of the recordings sheets and the substrate. The sheets are formed of a support material anisotropy and a recording material deposited on the support. The sheets are bonded to the bonding rings with their directions of anisotropy aligned.
摘要翻译：一种记录盘，其中两个记录片材在圆形基底的两侧的内周和外周与键合环接合，在记录片的记录部分和基底之间具有凹槽。片材由支撑材料各向异性形成，并且沉积在支撑体上的记录材料。这些片材以其各向异性方向对准而结合到结合环上。

49. 发明授权

US4540449A Aluminum substrate for magnetic recording media 失效
标题翻译：用于磁记录介质的铝基板
公开(公告)号：US4540449A
公开(公告)日：1985-09-10
申请号：US584996
申请日：1984-03-01
申请人： Koichi Yoshida , Yoshio Hirayama , Yasuo Oka , Takashi Kajiyama , Kunihiko Hotta
发明人： Koichi Yoshida , Yoshio Hirayama , Yasuo Oka , Takashi Kajiyama , Kunihiko Hotta
IPC分类号： G11B5/82 , C22C21/06 , C25D11/04 , C25D11/06 , G11B5/73 , G11B5/733 , G11B5/735 , G11B5/738 , H05K1/05 , B21C1/00
CPC分类号： G11B5/735 , C22C21/06 , G11B5/7315 , H05K1/053 , Y10T428/1259
摘要： An aluminum substrate for magnetic recording media such as magnetic disks, etc., is composed of an aluminum alloy plate containing 2 to 6% by weight magnesium and impurities in only limited amounts and having on the surface an anodic oxidation film with thickness more than 3 .mu.m formed by a chromic acid process. In the thus-anodized aluminum substrate, the occurrence of black spot defects is greatly reduced and the formation of cracks upon heating the substrate to high temperatures is prevented in spite of the thicker anodic oxidation film.
摘要翻译：用于诸如磁盘等的磁记录介质的铝基板由仅含有限量的含有2至6重量％的镁和杂质的铝合金板组成，并且在表面上具有厚度大于3的阳极氧化膜由铬酸过程形成的微米。在这样阳极氧化的铝基板中，尽管阳极氧化膜较厚，但是防止了黑斑缺陷的发生，并且在将基板加热到高温时形成裂缝。

50. 发明授权

US4304807A Magnetic recording tape 失效
标题翻译：磁记录磁带
公开(公告)号：US4304807A
公开(公告)日：1981-12-08
申请号：US49985
申请日：1979-06-19
申请人： Yoshio Kawakami , Yoneo Matsuzawa
发明人： Yoshio Kawakami , Yoneo Matsuzawa
IPC分类号： G11B5/73 , G11B5/733 , G11B5/78
CPC分类号： G11B5/733 , Y10S428/90 , Y10T428/24413 , Y10T428/2443 , Y10T428/258 , Y10T428/259 , Y10T428/31 , Y10T428/31797
摘要： A magnetic recording tape comprising a polyethylene terephthalate substrate and a magnetic material-containing layer closely adhered onto the substrate, which tape exhibits a reduced envelope variation. The polyethylene terephthalate substrate satisfies the formula:0.051H.sub.1 -0.59A+0.14 .DELTA.n+0.0015 (H.sub.2 -66.67).sup.2 +50.92.ltoreq.20wherein A is the average particle size of the polyethylene terephthalate crystals as determined from the half height width by X-ray diffractometry, and H.sub.1 is the average number of projections present in a unit area of 1 mm.sup.2 on the surface of the substrate, which projections have a height falling within the range of from 0.27 to 0.53 micron, H.sub.2 is the average number of projections similar to H.sub.1 above but having a height falling within the range of from 0.54 to 0.80 micron, rather than 0.27 to 0.53 micron, and .DELTA.n is the birefringence of the substrate.
摘要翻译：一种磁记录带，包括聚对苯二甲酸乙二酯基材和紧密粘合在基材上的含磁性材料的层，该胶带表现出减小的包络线变化。聚对苯二甲酸乙二醇酯基材满足公式：0.051H1-0.59A + 0.14 DELTA n + 0.0015（H2-66.67）2 + 50。

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