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1. 发明授权

US5151330A Magnetic recording medium comprising magnetic particles and a polyurethane resin binder having a polycaprolactone structural unit 失效
标题翻译：包含磁性颗粒的磁记录介质和具有聚碳酸酯结构单元的聚氨酯树脂粘合剂
公开(公告)号：US5151330A
公开(公告)日：1992-09-29
申请号：US614009
申请日：1990-11-13
申请人： Kenji Kumamoto , Kunitsuna Sasaki
发明人： Kenji Kumamoto , Kunitsuna Sasaki
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： G11B5/7022 , Y10S428/90 , Y10T428/31609
摘要： There is disclosed a magnetic recording medium having the excellent electromagnetic conversion properties and an improved Young's modulus of a magnetic layer, wherein the magnetic layer contains a binder comprising a polyurethane resin having a polycaprolactone structural unit and a vinyl chloride resin having --SO.sub.3 M, --COOM, --OSO.sub.3 M, ##STR1## wherein M represents hydrogen, lithium, sodium or potassium.

2. 发明授权

US5061516A Production method for magnetic recording medium 失效
标题翻译：磁记录介质的制作方法
公开(公告)号：US5061516A
公开(公告)日：1991-10-29
申请号：US637222
申请日：1991-01-03
申请人： Ryosuke Isobe , Kiyoshi Sawada , Kunitsuna Sasaki , Takahiro Mori , Yuki Ando
发明人： Ryosuke Isobe , Kiyoshi Sawada , Kunitsuna Sasaki , Takahiro Mori , Yuki Ando
IPC分类号： G11B5/842
CPC分类号： G11B5/842
摘要： There is disclosed the method of preparing a magnetic recording medium having an improved running durability and the excellent electromagnetic conversion characteristics, wherein the magnetic paint for a magnetic layer is prepared by the steps of:kneading the ferromagnetic powder of 100 parts by weight, the first binder of 3 to 15 parts by weight, and a solvent of 10 to 60 parts by weight under a load of a power consumption of 0.05 to 0.5 KW per kg of the ferromagnetic powder to prepare a mixture thereof;kneading the second binder and the mixture under the load of the same power consumption to prepare a coating solution.
摘要翻译：公开了制备具有改善的运行耐久性和优异的电磁转换特性的磁记录介质的方法，其中用于磁性层的磁性涂料是通过以下步骤制备的：将铁磁粉末捏合100重量份，将第一粘合剂为3〜15重量份，溶剂为10〜60重量份，功率消耗为0.05〜0.5KW / kg铁磁粉末的负荷，制备其混合物; 在相同功率的负荷下捏合第二粘合剂和混合物以制备涂布溶液。

3. 发明授权

US5480713A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5480713A
公开(公告)日：1996-01-02
申请号：US115903
申请日：1993-09-01
申请人： Kunitsuna Sasaki , Narito Goto , Katsuyuki Takeda , Nobuyuki Sekiguchi , Hideki Takahashi , Ryosuki Isobe , Takahiro Mori
发明人： Kunitsuna Sasaki , Narito Goto , Katsuyuki Takeda , Nobuyuki Sekiguchi , Hideki Takahashi , Ryosuki Isobe , Takahiro Mori
IPC分类号： G11B5/70 , G11B5/716 , G11B5/738 , B32B5/16 , G11B5/66
CPC分类号： G11B5/738 , G11B5/70 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium having an improved output property over the wide range of wavelength, by controlling the magnetic reluctance and saturated magnetic flux density of the outermost layer and at least one layer other than the outermost layer, as specified in the claims, is disclosed. A magnetic matal powder contained in the outermost layer has an average major axis length of not more than 250 nm and a ratio of the average major axis length divided by an average X-ray measured particle size is less than 12.
摘要翻译：公开了一种磁记录介质，通过控制最外层的磁阻和饱和磁通密度以及除最外层之外的至少一个层，在宽波长范围内具有改进的输出特性。包含在最外层中的磁性粉末粉末的平均长轴长度不大于250nm，平均长轴长度除以平均X射线测量粒径的比小于12。

4. 发明授权

US5304416A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5304416A
公开(公告)日：1994-04-19
申请号：US995925
申请日：1992-12-21
申请人： Narito Goto , Katsuyuki Takeda , Kunitsuna Sasaki , Nobuyuki Sekiguchi
发明人： Narito Goto , Katsuyuki Takeda , Kunitsuna Sasaki , Nobuyuki Sekiguchi
IPC分类号： G11B5/706 , C09D5/23 , C09D7/12 , G11B5/716 , B32B5/16 , G11B5/66
CPC分类号： G11B5/716 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording tape with plural magnetic layers, having both the electromagnetic conversion properties, particularly the chromatic output, and the corrosion resistance is disclosed.The top layer contains a magnetic metal powder having 0.2-1.5% of water when it is mixed into a magnetic paint and a layer other than the top layer has the coercive force of 500 to 12000 Oe.
摘要翻译：公开了具有多个磁性层的磁记录带，具有电磁转换特性，特别是彩色输出和耐腐蚀性。顶层含有磁性金属粉末，当其混入磁性涂料中时，具有0.2-1.5％的水，除了顶层以外的层具有500至12000Oe的矫顽力。

5. 发明授权

US07556681B2 Ink for ink-jet recording 有权
标题翻译：墨水用于喷墨记录
公开(公告)号：US07556681B2
公开(公告)日：2009-07-07
申请号：US12112208
申请日：2008-04-30
申请人： Kunitsuna Sasaki , Hirotaka Iijima
发明人： Kunitsuna Sasaki , Hirotaka Iijima
IPC分类号： C09D11/02
CPC分类号： C09D11/30
摘要： An ink-jet ink comprising at least water and an organic solvent having a boiling point of not less than 150° C. in an amount of not less than 50 weight % and not more than 80 weight % based on the total weight of the ink, wherein the organic solvent comprises an alkane diol represented by Formula (1) or (2) in an amount of not less than 45 weight % and not more than 70 weight % based on the total weight of the ink, and a glycol mono-ether represented by Formula (3) in an amount of not less than 5 weight % and not more than 15 weight % based on the total weight of the ink: Formula (1) R1—CH(OH)—CH(OH)—R2; Formula (2) R1—CH(OH)—CH2—CH(OH)—R2; Formula (3) CH3—O—R3—OH.
摘要翻译：一种喷墨油墨，其至少包含沸点不低于150℃的水和有机溶剂，其量不小于50重量％且不大于80重量％，基于油墨的总重量其中所述有机溶剂包含式（1）或（2）所示的烷二醇，其量相对于油墨的总重量为45重量％以上且70重量％以下，由式（3）表示的醚以不低于油墨重量的5重量％且不超过15重量％：式（1）R1-CH（OH）-CH（OH）-R2 ; 式（2）R1-CH（OH）-CH2-CH（OH）-R2; 式（3）CH3-O-R3-OH。

6. 再颁专利

USRE36220E Magnetic recording medium having a magnetic layer with specified limits of both RA and R10Z surface roughness 失效
标题翻译：具有RA和R10Z表面粗糙度的规定极限的磁性层的磁记录介质
公开(公告)号：USRE36220E
公开(公告)日：1999-06-01
申请号：US611619
申请日：1996-03-08
申请人： Takahiro Mori , Kunitsuna Sasaki , Hisato Kato , Kazuyoshi Imai , Takahiro Hayashi
发明人： Takahiro Mori , Kunitsuna Sasaki , Hisato Kato , Kazuyoshi Imai , Takahiro Hayashi
IPC分类号： G11B5/70 , G11B5/714 , G11B5/716 , G11B5/738 , G11B5/78 , G11B5/842 , G11B5/00
CPC分类号： G11B5/70 , G11B5/714 , G11B5/716 , G11B5/738 , G11B5/78 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/265 , Y10T428/273
摘要： Disclosed are a magnetic recording medium which comprises a non-magnetic support, one or more coating layers provided on the non-magnetic support and an upper layer of the coating layers being a magnetic layer containing ferromagnetic metallic powder with the total thickness of the coating layers being 0.5 to 2.5 .mu.m, wherein the magnetic layer has a surface roughness Ra of 1.0 to 4.6 nm and a surface roughness R10z of 8.0 to 35.0 nm, which satisfy the relations of:Ra.ltoreq.-0.47t+0.5/t+3.8 andR10z.ltoreq.-1.50t+6.0/t+23.0where t is the total thickness of the coating layers in terms of .mu.m,and an aliphatic acid ester is contained in the surface portion of the magnetic layer in an amount of 5 to 50 mg/m.sup.2, and a process for preparing the same.
摘要翻译：公开了一种磁记录介质，其包括非磁性载体，设置在非磁性载体上的一个或多个涂层，涂层的上层是包含铁磁性金属粉末的磁性层，其中涂层的总厚度为0.5〜2.5μm，其中磁性层的表面粗糙度Ra为1.0〜4.6nm，表面粗糙度R10z为8.0〜35.0nm，满足关系：Ra≤0.47t+ 0.5 / t + 3.8和R10z

7. 发明授权

US5215833A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5215833A
公开(公告)日：1993-06-01
申请号：US718025
申请日：1991-06-20
申请人： Narito Goto , Katsuyuki Takeda , Kunitsuna Sasaki , Nobuyuki Sekiguchi
发明人： Narito Goto , Katsuyuki Takeda , Kunitsuna Sasaki , Nobuyuki Sekiguchi
IPC分类号： G11B5/70 , C09D5/23 , C09D7/12 , G11B5/71 , G11B5/716
CPC分类号： G11B5/71 , G11B5/716 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/265 , Y10T428/30
摘要： A magnetic recording medium is disclosed. The medium comprises a non-magnetic support and, provided thereon, plural magnetic layers comprising the uppermost magnetic layer having a thickness of 1.5 .mu.m or less and lower magnetic layers, said plural magnetic layers containing a ferromagnetic powder, a binder and a lubricant, wherein a dynamic friction coefficient of the uppermost layer against a metal pin is 0.25 or less under the condition of a temperature of 20.degree. C. and a relative humidity of 60%, and 0.20 or less under the condition of a temperature of 40.degree. C. and a relative humidity of 20%.
摘要翻译：公开了一种磁记录介质。所述介质包括非磁性支持体，并且在其上设置包括厚度为1.5μm以下的最上层的磁性层和下层磁性层的多个磁性层，所述多个磁性层含有铁磁粉末，粘合剂和润滑剂，其中在温度为20℃，相对湿度为60％，温度为40℃的条件下，最上层相对于金属销的动摩擦系数为0.25以下相对湿度为20％。

8. 发明授权

US5094916A Magnetic recording medium comprising a polyurethane binder resin having a specified glass transition, molecular weight, and polar group content 失效
标题翻译：包含具有指定玻璃转换，分子量和极性组含量的聚氨酯粘合剂树脂的磁记录介质
公开(公告)号：US5094916A
公开(公告)日：1992-03-10
申请号：US629464
申请日：1990-12-18
申请人： Kunitsuna Sasaki , Kiyoshi Sawada , Ryosuke Isobe , Takahiro Mori , Yuki Ando
发明人： Kunitsuna Sasaki , Kiyoshi Sawada , Ryosuke Isobe , Takahiro Mori , Yuki Ando
IPC分类号： C08G18/08 , C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702
CPC分类号： C08G18/0828 , G11B5/7021 , Y10S428/90 , Y10T428/3158 , Y10T428/31609
摘要： A magnetic recording medium is disclosed which has a magnetic layer comprising a ferromagnetic powder and a specific polyurethane resin as a binder. The polyurethane resin has a weight average molecular weight of not more than 30,000, a glass transition point of not higher than 0.degree. C. and a -SO.sub.3 M group, wherein M is a hydrogen atom or an alkali metal atom, in an amount of not less than 0.35% by weight in terms of sulfur atom. The recording medium is excellent in the dispersibility of the magnetic powder in the binder and has high running stability.
摘要翻译：公开了一种磁记录介质，其具有包含铁磁粉末和特定聚氨酯树脂作为粘合剂的磁性层。聚氨酯树脂的重均分子量不大于30,000，玻璃化转变点不高于0℃，-SO 3 M基团（其中M为氢原子或碱金属原子）的量不为小于0.35重量％的硫原子。记录介质的磁粉在粘合剂中的分散性优异，运行稳定性高。

9. 发明授权

US4731292A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4731292A
公开(公告)日：1988-03-15
申请号：US930777
申请日：1986-11-14
申请人： Kunitsuna Sasaki , Yoshitaka Yasufuku , Toshiaki Shibue , Kazumasa Matsumoto
发明人： Kunitsuna Sasaki , Yoshitaka Yasufuku , Toshiaki Shibue , Kazumasa Matsumoto
IPC分类号： G11B5/702 , G11B5/71
CPC分类号： G11B5/7023 , G11B5/71 , Y10S428/90 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording medium is disclosed which comprises a support, and a magnetic layer comprising a specific binder resin, a fatty acid or a fatty acid ester and a magnetic particle. The binder resin comprises a monomer unit of vinyl chloride, a monomer unit having an alkalin metal salt of sulfonic acid or an alkaline salt of phosphoric acid and a monomer unit having an epoxy group. The magnetic recording medium is improved in a dispersibility of magnetic particles, a durability for still picture reproduction, a stability in running and in a S/N ratio of luminance.
摘要翻译：公开了一种磁记录介质，其包括载体和包含特定粘合剂树脂，脂肪酸或脂肪酸酯和磁性颗粒的磁性层。粘合剂树脂包括氯乙烯的单体单元，具有磺酸的碱金属盐或磷酸碱金属的单体单元和具有环氧基的单体单元。磁性记录介质的磁性颗粒的分散性，静态图像再现的耐久性，运行中的稳定性和亮度的S / N比提高了。

10. 发明授权

US5545462A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5545462A
公开(公告)日：1996-08-13
申请号：US272278
申请日：1994-07-08
申请人： Narito Goto , Masanori Isshiki , Kunitsuna Sasaki , Nobuyuki Sekiguchi , Katsuyuki Takeda , Hideki Takahashi
发明人： Narito Goto , Masanori Isshiki , Kunitsuna Sasaki , Nobuyuki Sekiguchi , Katsuyuki Takeda , Hideki Takahashi
IPC分类号： B32B7/02 , B32B7/12 , B32B27/04 , B32B27/18 , B32B33/00 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/06 , G11B5/706 , G11B5/716 , G11B5/73 , B32B3/10 , B32B5/16 , G11B5/66
CPC分类号： G11B5/70605 , G11B5/70673 , G11B5/70678 , G11B5/716 , Y10S428/90 , Y10T428/24355 , Y10T428/24942 , Y10T428/25 , Y10T428/265
摘要： Disclosed is a magnetic recording medium characterized in that plural magnetic layers are provided on a non-magnetic support, the uppermost layer of the magnetic layers contains a ferromagnetic metallic powder and/or a hexagonal system magnetic powder and a binder, at least one layer other than the uppermost layer contains Co-containing iron oxide and a binder, the film thickness of the uppermost layer is 0.5 .mu.m or less, and the surface of the uppermost layer of the magnetic layers has an R.sub.10z value of the magnetic layer defined below of 50 nm or less, by which electromagnetic conversion characteristics of a magnetic recording medium can be improved.
摘要翻译：公开了一种磁记录介质，其特征在于，多个磁性层设置在非磁性载体上，磁性层的最上层含有强磁性金属粉末和/或六方晶系磁性粉末和粘合剂，至少一层其它比最上层含有含Co的氧化铁和粘合剂，最上层的膜厚为0.5μm以下，磁性层的最上层的表面的磁性层的R10z值为 50nm以下，可以提高磁记录介质的电磁转换特性。

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