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公开(公告)号:US4388360A
公开(公告)日:1983-06-14
申请号:US356540
申请日:1982-03-09
申请人: Takahito Miyoshi , Toshimitu Okutu , Masaaki Takimoto , Takashi Saida , Goro Akashi , Masaaki Fujiyama
发明人: Takahito Miyoshi , Toshimitu Okutu , Masaaki Takimoto , Takashi Saida , Goro Akashi , Masaaki Fujiyama
IPC分类号: C09D101/18 , C08J5/16 , C09D127/06 , C09D175/04 , G11B5/73 , G11B5/735 , H01F10/02
CPC分类号: G11B5/735 , Y10S428/90 , Y10T428/24612 , Y10T428/256 , Y10T428/265
摘要: A magnetic recording medium is disclosed which is comprised of a nonmagnetic support base having a magnetic layer disposed on one surface. A back coating is disposed on the opposite surface of the support base in order to provide the magnetic recording medium with greater durability without increasing the coefficient of friction. The back coating is comprised of a binder having inorganic particles dispersed therein, the inorganic particles including SnO.sub.2 particles having an average size of about 0.01 to about 0.8.mu.. The back coating does not reduce the S/N ratio of the recording medium.
摘要翻译: 公开了一种磁记录介质,其包括具有设置在一个表面上的磁性层的非磁性支撑基座。 背部涂层设置在支撑基座的相对表面上,以便在不增加摩擦系数的情况下提供更大耐用性的磁记录介质。 背涂层由分散有无机颗粒的粘合剂组成,无机颗粒包括平均尺寸为约0.01至约0.8μm的SnO 2颗粒。 背涂层不会降低记录介质的S / N比。
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公开(公告)号:US4442171A
公开(公告)日:1984-04-10
申请号:US356285
申请日:1982-03-09
申请人: Masami Sato , Goro Akashi , Yasutoshi Okuzawa , Toshimitu Okutu
发明人: Masami Sato , Goro Akashi , Yasutoshi Okuzawa , Toshimitu Okutu
IPC分类号: G11B5/72 , C08J5/16 , C09D101/18 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号: G11B5/735 , Y10S428/90 , Y10T428/24521 , Y10T428/26 , Y10T428/265
摘要: A magnetic recording medium comprising a nonmagnetic flexible substrate, a magnetic layer provided on the surface of the substrate and containing ferromagnetic grains dispersed in a binder, and a back layer provided on the back surface of the substrate. The magnetic recording medium has a stiffness (S.sub.TD) of 6.0 or less. The friction coefficient (.mu..sub.B) of the back layer surface with respect to the axial direction of a loading post in a video tape recorder is controlled to satisfy the condition:0.ltoreq..mu..sub.B .ltoreq.0.1S.sub.TD -0.05so as to make the magnetic recording medium highly resistant to damage due to movement in a video tape recorder.
摘要翻译: 一种磁记录介质,包括非磁性柔性基板,设置在基板表面上并包含分散在粘结剂中的铁磁性颗粒的磁性层,以及设置在基板的背面上的背层。 磁记录介质具有6.0或更小的刚度(STD)。 背景层表面相对于录像机中的装载柱的轴向的摩擦系数(μB)被控制为满足以下条件:0≤b≤0.1STD-0.05,以便 使得磁记录介质高度抵抗由于磁带录像机中的移动而造成的损坏。
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公开(公告)号:US4780365A
公开(公告)日:1988-10-25
申请号:US19286
申请日:1987-02-26
IPC分类号: C09D101/18 , C09D175/04 , G11B5/73 , G11B5/735 , G11B5/70
CPC分类号: G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/265
摘要: In a magnetic recording medium comprising a nonmagnetic support, a magnetic recording layer provided on one surface of said support and a back layer containing carbon black provided on another surface of said support, the improvement wherein said back layer has thickness of not larger than 0.6 .mu.m and contains an inorganic filler powder having a Mohs' scale of hardness of not less than 5, a mean particle diameter of smaller than the thickness of the back layer and not smaller than 1/5 of the thickness thereof, and the maximum particle diameter of not larger than 11/10 of the thickness of the back layer.
摘要翻译: 在包括非磁性载体的磁记录介质中,设置在所述载体的一个表面上的磁记录层和设置在所述载体的另一表面上的含有炭黑的背层,其中所述背层的厚度不大于0.6μm 并且含有莫氏硬度不小于5的无机填料粉末,平均粒径小于背层厚度,不小于其厚度的1/5,最大粒径 不大于背层厚度的11/10。
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公开(公告)号:US4761243A
公开(公告)日:1988-08-02
申请号:US943211
申请日:1986-12-08
摘要: A process for the preparation of a magnetic paint comprising a ferromagnetic powder, an abrasive and a binder, which comprises the steps of preparing the abrasive dispersion comprising the abrasive and the binder, and then mixing said abrasive dispersion and the ferromagnetic powder.
摘要翻译: 一种用于制备包含铁磁性粉末,研磨剂和粘合剂的磁性涂料的方法,其包括以下步骤:制备包含研磨剂和粘合剂的磨料分散体,然后混合所述磨料分散体和铁磁性粉末。
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公开(公告)号:US4803121A
公开(公告)日:1989-02-07
申请号:US109013
申请日:1987-10-16
CPC分类号: G11B5/7085 , Y10S428/90 , Y10T428/257
摘要: A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic fine particles, a binder, and .alpha.-alumina particles having an average size of from about 0.1 to 0.3 .mu.m, provided that the number of .alpha.-alumina particles having a particle size of larger than 0.05 .mu.m is at least equal to the number of .alpha.-alumina particles having a particle size of up to 0.05 .mu.m.
摘要翻译: 公开了一种磁记录介质,其包括非磁性载体,其上具有包含铁磁细颗粒的磁性层,粘合剂和平均尺寸为约0.1至0.3μm的α-氧化铝颗粒,条件是α 粒径大于0.05μm的氧化铝粒子至少等于粒径达0.05μm的α-氧化铝粒子的数量。
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公开(公告)号:US4647501A
公开(公告)日:1987-03-03
申请号:US815271
申请日:1985-12-24
申请人: Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
发明人: Nobutaka Yamaguchi , Shinobu Iida , Norio Nasu , Katsumi Ryoke , Toshimitu Okutu , Kenichi Masuyama
IPC分类号: C09D175/04 , C09D101/18 , C09D127/08 , G11B5/73 , G11B5/735 , G11B5/70 , G11B5/72
CPC分类号: G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/31565 , Y10T428/3158 , Y10T428/31609
摘要: A magnetic recording material, which comprises a non-magnetic support having provided on one side thereof a magnetic layer and on the other side thereof a backing layer is disclosed. The binder of the backing layer is comprised of a combination of a cellulose resin, a vinylidene chloride resin, a polyurethane resin and a polyisocyanate. Use of the backing layer increases the durability of the tape and aids in preventing drop out.
摘要翻译: 公开了一种磁记录材料,其包括在其一侧上设置有磁性层的非磁性支撑体,其另一侧具有背衬层。 背衬层的粘合剂由纤维素树脂,偏二氯乙烯树脂,聚氨酯树脂和多异氰酸酯的组合构成。 背衬层的使用增加了胶带的耐久性,有助于防止脱落。
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27.
公开(公告)号:US06232054B1
公开(公告)日:2001-05-15
申请号:US09650735
申请日:2000-08-30
IPC分类号: G03C1795
CPC分类号: C08J5/18 , C08G63/189 , C08J2367/02 , C08L67/02 , C08L67/025 , G03C1/7954 , Y10T428/31786
摘要: A polyester support is described, which has a tear strength in the transverse direction (TD) of 10 to 100 g, a break strength in TD of 10 to 40 Kg/mm2, a break strength in the machine direction (MD) of 2 to 25 Kg/mm2 and a thickness unevenness in MD of 0 to 8 &mgr;m. Also described is a silver halide photographic light-sensitive material using the support.
摘要翻译: 描述了一种聚酯载体,其横向撕裂强度(TD)为10〜100g,TD断裂强度为10〜40Kg / mm 2,纵向断裂强度(MD)为2〜 25kg / mm2,MD的厚度不均匀度为0〜8μm。 还描述了使用该载体的卤化银照相感光材料。
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公开(公告)号:US5567576A
公开(公告)日:1996-10-22
申请号:US447693
申请日:1995-05-23
申请人: Fumiyuki Suzuki , Toshimitu Okutu , Masaaki Otoshi
发明人: Fumiyuki Suzuki , Toshimitu Okutu , Masaaki Otoshi
CPC分类号: G03C1/7954
摘要: A photographic support having good adhesion to a photographic emulsion layer formed thereon without physical surface modification. The support comprises a uniaxially or biaxially stretched polyester film and has at least (1) a main layer containing a polyester and (2) one or two surface layers. At least one of the surface layers comprises a substantially noncrystalline polyester. Furthermore, when used in the form of a roll film, substantially no curling of the support remains upon development.
摘要翻译: 具有与形成在其上的感光乳剂层的良好粘附性而不进行物理表面改性的照相底片。 载体包括单轴或双轴拉伸的聚酯薄膜,并且至少具有(1)含有聚酯的主层和(2)一个或两个表面层。 至少一个表面层包含基本上非结晶的聚酯。 此外,当以卷膜的形式使用时,在显影时基本上不保持载体的卷曲。
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公开(公告)号:US4868060A
公开(公告)日:1989-09-19
申请号:US38172
申请日:1987-04-14
IPC分类号: C08G18/79 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号: G11B5/7021 , C08G18/791 , Y10S428/90 , Y10T428/31547
摘要: A magnetic recording medium is described, comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic particles and a binder, said binder of the magnetic layer containing polyisocyanato-isocyanurate as a hardening component.
摘要翻译: 描述了一种磁记录介质,包括其上设置有含有铁磁颗粒和粘合剂的磁性层的非磁性载体,所述磁性层的粘合剂含有聚异氰酸酯基异氰脲酸酯作为硬化组分。
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公开(公告)号:US4551386A
公开(公告)日:1985-11-05
申请号:US596776
申请日:1984-04-04
申请人: Nobutaka Yamaguchi , Shinobu Iida , Masahiro Utsumi , Toshimitu Okutu , Kenichi Masuyama , Eiichi Tadokoro
发明人: Nobutaka Yamaguchi , Shinobu Iida , Masahiro Utsumi , Toshimitu Okutu , Kenichi Masuyama , Eiichi Tadokoro
CPC分类号: G11B5/735 , Y10S428/90 , Y10T428/25 , Y10T428/265 , Y10T428/30
摘要: A magnetic recording material comprised of a non-magnetic support base having provided thereon a magnetic recording layer on one side and the back layer on the other side is disclosed. The magnetic recording layer is comprised of ferromagnetic particles dispersed in a binder in combination with carbon black particles having an average primary particle size of 30 .mu.m or less. The back layer is comprised of a binder having dispersed therein carbon black having an average primary particle size in the range of 50 to 150 m.mu.. The magnetic recording material has improved electromagnetic properties and improved durability, particularly with respect to video S/N and dropout.
摘要翻译: 公开了一种磁记录材料,其包括在一侧上设置有磁记录层的非磁性支撑基底和另一侧上的背层。 磁记录层由分散在粘合剂中的铁磁颗粒与平均一次粒径为30μm以下的炭黑颗粒组合而成。 背层由其中分散有平均一次粒径在50-150μm的碳黑的粘合剂组成。 磁记录材料具有改进的电磁特性和改善的耐久性,特别是在视频S / N和压差方面。
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