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1. 发明授权

US5904979A Magnetic recording system 失效
标题翻译：磁记录系统
公开(公告)号：US5904979A
公开(公告)日：1999-05-18
申请号：US602567
申请日：1996-02-14
申请人： Yutaka Kakuishi , Kenichi Masuyama , Kiyomi Ejiri
发明人： Yutaka Kakuishi , Kenichi Masuyama , Kiyomi Ejiri
IPC分类号： G11B5/702 , C09D5/23 , G11B5/706 , G11B5/712 , G11B5/738
CPC分类号： G11B5/738 , G11B5/712 , Y10S428/90 , Y10S977/932 , Y10T428/265 , Y10T428/2991 , Y10T428/31935
摘要： (1) A magnetic recording system is disclosed, which comprises a thin-film magnetic head and a magnetic recording medium comprising a nonmagnetic support having thereon a magnetic layer comprising mainly ferromagnetic particles and a binder resin, wherein said binder resin comprising mainly a vinyl chloride resin, and said ferromagnetic particles are surface-treated with at least an organic compound. (2) Another magnetic recording system is disclosed, which comprises a thin-film magnetic head and a magnetic recording medium comprising a nonmagnetic support, a nonmagnetic layer comprising mainly inorganic nonmagnetic particles and a binder resin over the nonmagnetic support, and a magnetic layer comprising mainly ferromagnetic metal particles and a binder resin over the nonmagnetic layer, wherein said binder resins in said magnetic and nonmagnetic layers each comprises mainly a vinyl chloride resin, said ferromagnetic metal particles are surface-treated with at least an organic compound, and said magnetic layer has a thickness of from 0.05 to 1.0 .mu.m.
摘要翻译：（1）公开了一种磁记录系统，其包括薄膜磁头和磁记录介质，该磁记录介质包括其上具有主要包含铁磁颗粒和粘合剂树脂的磁性层的非磁性载体，其中所述粘合剂树脂主要包含氯乙烯树脂，并且所述铁磁颗粒用至少一种有机化合物进行表面处理。（2）公开了另一种磁记录系统，其包括薄膜磁头和包括非磁性载体的磁记录介质，主要包含无磁性非磁性颗粒的非磁性层和在非磁性载体上的粘合剂树脂，以及包括主要是非磁性层上的铁磁金属颗粒和粘合剂树脂，其中所述磁性和非磁性层中的所述粘合剂树脂主要包含氯乙烯树脂，所述强磁性金属颗粒用至少一种有机化合物进行表面处理，并且所述磁性层厚度为0.05〜1.0μm。

2. 发明授权

US4968557A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4968557A
公开(公告)日：1990-11-06
申请号：US285976
申请日：1988-12-19
申请人： Kiyomi Ejiri , Yutaka Kakuishi , Hiroaki Araki
发明人： Kiyomi Ejiri , Yutaka Kakuishi , Hiroaki Araki
IPC分类号： C09D5/23 , C09D175/00 , C09D175/06 , G11B5/70 , G11B5/702 , G11B5/706 , G11B5/708
CPC分类号： G11B5/7085 , G11B5/70 , G11B5/702 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/30 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer containing ferromagnetic alloy particles, fine particles of metal oxides and carbon black dispersed in a binder. The ferromagnetic alloy particles have a pH of from 4.5 to 7.5. The carbon black has a pH in a range of from 6.5 to 10.5. At least one kind of fine particles of metal oxides have Mohs' hardness of 5 or higher and pH of at least 3.5 but less than 7.5 and at least one kind of fine particles of metal oxides have Mohs' hardness of 5 or higher and a pH of from 7.5 to 10.5. The binder contains a polymer having at least one kind of an acidic polar group selected from the group consisting of a phosphate group, a phosphoric acid group, a sulfonic acid group, a carboxylic acid group, a metal salt of phosphoric acid group, a metal salt of sulfonic acid group, and a metal salt of carboxylic acid group.
摘要翻译：一种磁记录介质，其包括非磁性载体，其上设有包含铁磁合金颗粒的磁性层，分散在粘合剂中的金属氧化物的细颗粒和炭黑。铁磁合金颗粒的pH为4.5至7.5。炭黑的pH在6.5至10.5的范围内。金属氧化物的至少一种细颗粒的莫氏硬度为5以上，pH为至少3.5但小于7.5，并且至少一种金属氧化物微粒的莫氏硬度为5以上，pH为从7.5到10.5。粘合剂含有具有选自磷酸基，磷酸基，磺酸基，羧酸基，磷酸基金属盐，金属的金属中的至少一种酸性极性基团的聚合物磺酸基盐和羧酸基金属盐。

3. 发明授权

US07352528B2 Leader tape and magnetic tape cartridge using the same 有权
标题翻译：领带和磁带使用相同
公开(公告)号：US07352528B2
公开(公告)日：2008-04-01
申请号：US11084049
申请日：2005-03-21
申请人： Kiyomi Ejiri
发明人： Kiyomi Ejiri
IPC分类号： G11B5/78
CPC分类号： G11B5/627 , G11B23/107
摘要： A leader tape comprising a support and a coating layer containing a powder and a binder, wherein at least one surface of the leader tape has a center line average roughness (Ra) of from 10 to 60 nm, and the leader tape has a cupping of from 0 to 1 mm per a width of ½ inch.
摘要翻译：一种引导带，其包括支撑体和包含粉末和粘合剂的涂层，其中引导带的至少一个表面具有10至60nm的中心线平均粗糙度（Ra），并且引导带具有杯形每½英寸的宽度为0至1毫米。

4. 发明申请

US20050264935A1 Information recording tape 审中-公开
标题翻译：信息录像带
公开(公告)号：US20050264935A1
公开(公告)日：2005-12-01
申请号：US11138351
申请日：2005-05-27
申请人： Minoru Sueki , Kiyomi Ejiri
发明人： Minoru Sueki , Kiyomi Ejiri
IPC分类号： G11B5/70 , G11B5/74 , G11B5/78
CPC分类号： G11B5/78 , G11B5/70
摘要： An information recording tape including a data-recording area and a non-data-recording area, with the data-recording area having a center-line average surface roughness Ra smaller than 3 nm and at most 100/mm2 of protuberances standing at least 20 nm high, and with the non-data-recording area having a center-line average surface roughness Ra greater than 2 nm and more than 100/mm2 of protuberances standing at least 20 nm high.
摘要翻译：一种包括数据记录区和非数据记录区的信息记录带，数据记录区具有小于3nm且至多100 / mm 2的中心线平均表面粗糙度Ra，其中非线性平均表面粗糙度Ra大于2nm，超过100 / mm 2的突起突出部位的非数据记录区域至少20nm高。

5. 发明申请

US20050211815A1 Leader tape and magnetic tape cartridge using the same 审中-公开
标题翻译：领带和磁带使用相同
公开(公告)号：US20050211815A1
公开(公告)日：2005-09-29
申请号：US11090185
申请日：2005-03-28
申请人： Kiyomi Ejiri
发明人： Kiyomi Ejiri
IPC分类号： B32B5/16 , G11B5/627 , G11B23/107 , G11B23/26
CPC分类号： G11B23/107 , G11B5/627 , Y10T428/254
摘要： A leader tape comprising a support and a coating layer containing powder and a binder, wherein at least one surface of the leader tape has a center line average roughness (Ra) of from 10 to 60 nm, and the leader tape has a coefficient of thermal expansion in a transverse direction of not more than 20 ppm/° C., a coefficient of thermal expansion in a machine direction of not more than 20 ppm/°C., a coefficient of humidity expansion in a transverse direction of not more than 20 ppm/% RH, and a coefficient of humidity expansion in a machine direction of not more than 20 ppm/% RH.
摘要翻译：一种引导带，其包括支撑体和包含粉末和粘合剂的涂层，其中引导带的至少一个表面具有10至60nm的中心线平均粗糙度（Ra），并且引导带具有热系数在横向上的膨胀不大于20ppm /℃，机器方向的热膨胀系数不大于20ppm /℃，横向湿度膨胀系数不大于20 ppm /％RH，纵向湿度膨胀系数不大于20ppm /％RH。

6. 发明授权

US06579592B1 Magnetic recording tape with controlled Hc and magnetic flux/unit area value and controlled Cl/Fe intensity 失效
标题翻译：具有受控Hc和磁通量/单位面积值和受控Cl / Fe强度的磁记录带
公开(公告)号：US06579592B1
公开(公告)日：2003-06-17
申请号：US09324754
申请日：1999-06-03
申请人： Satoshi Matsubaguchi , Masaki Suzuki , Hiroaki Doushita , Hiroaki Takano , Hiroo Inaba , Kiyomi Ejiri
发明人： Satoshi Matsubaguchi , Masaki Suzuki , Hiroaki Doushita , Hiroaki Takano , Hiroo Inaba , Kiyomi Ejiri
IPC分类号： G11B5702
CPC分类号： G11B5/70621 , G11B5/70 , Y10T428/24355 , Y10T428/25 , Y10T428/26 , Y10T428/2982 , Y10T428/31609 , Y10T428/31935
摘要： A magnetic recording tape is described, which comprises a plastic support having provided thereon a magnetic layer comprising a ferromagnetic metal powder dispersed in a binder, wherein the magnetic layer has the product P of the coercivity Hc (Oe) in the in-plane machine direction of the tape and the magnetic flux &phgr;m (G·cm) of from 100 to 160.
摘要翻译：描述了一种磁记录带，其包括在其上设置有包含分散在粘合剂中的强磁性金属粉末的磁性层的塑料支撑体，其中磁性层具有在平面机器方向上的矫顽力Hc（Oe）的乘积P 的磁带和磁通量（G.cm）为100至160。

7. 发明授权

US06497948B2 Magnetic recording medium 有权
标题翻译：磁记录介质
公开(公告)号：US06497948B2
公开(公告)日：2002-12-24
申请号：US09821496
申请日：2001-03-29
申请人： Kiyomi Ejiri , Masahiko Mori
发明人： Kiyomi Ejiri , Masahiko Mori
IPC分类号： G11B5706
CPC分类号： G11B5/714 , G11B5/738 , Y10S428/90 , Y10T428/25 , Y10T428/256 , Y10T428/265
摘要： The present invention aims to provide a particulate magnetic recording medium showing a high C/N in high-density magnetic recording (especially using an MR head for reproducing). Herein disclosed is a magnetic recording medium comprising a lower layer containing a nonmagnetic powder and a binder provided on a nonmagnetic flexible substrate and a magnetic layer containing a ferromagnetic powder and a binder provided thereon wherein said magnetic layer has an average thickness d of 0.01-0.1 &mgr;m, the ferromagnetic powder contained in said magnetic layer is an acicular ferromagnetic alloy powder having an average major axis length of 0.1 &mgr;m or less and a as of 120 A.m2/kg (120 emu/g) or less, the nonmagnetic powder contained in said lower layer is an acicular inorganic powder having an average major axis length of 0.15 &mgr;m or less, and said ferromagnetic powder has an aspect ratio equal to or smaller than the aspect ratio of said acicular inorganic powder.
摘要翻译：本发明的目的在于提供一种在高密度磁记录（特别是使用用于再现的MR磁头）中具有高C / N的微粒磁记录介质。此外，公开了一种磁记录介质，其包含含有非磁性粉末和提供在非磁性柔性基板上的粘合剂和含有铁磁粉末和粘合剂的磁性层，其中所述磁性层的平均厚度d为0.01-0.1μm，所述磁性层中所含的铁磁性粉末是具有平均长轴长度为0.1μm以下，a为120A·m 2 / kg（120emu / g）以下，所述下层中所含的非磁性粉末为平均长轴长度为0.15的针状无机粉末所述铁磁粉末的纵横比等于或小于所述针状无机粉末的纵横比。

8. 发明授权

US06210775B1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06210775B1
公开(公告)日：2001-04-03
申请号：US09434276
申请日：1999-11-03
申请人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
发明人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
IPC分类号： G11B566
CPC分类号： G11B5/848 , G11B5/70 , G11B5/716 , G11B5/733 , G11B5/738 , G11B5/842 , Y10S428/90 , Y10T428/12472 , Y10T428/24355 , Y10T428/24942 , Y10T428/25 , Y10T428/253 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265 , Y10T428/269 , Y10T428/31551 , Y10T428/31721 , Y10T428/31855
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising a binder having dispersed therein a ferromagnetic powder which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet, wherein the upper magnetic layer has an average dry thickness (d) of not more than 1.0 &mgr;m and an average thickness variation (&Dgr;d) at the interface between the upper magnetic layer and lower non-magnetic layer is not more than d/2. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.
摘要翻译：公开了一种磁记录介质，其包括非磁性载体，其上至少设置有包含分散有非磁性粉末的粘结剂的至少一个下部非磁性层，以及包括分散有铁磁性粉末的粘合剂的上磁性层，已经涂覆在所述下部非磁性层上，而较低的非磁性层是湿的，其中上部磁性层具有不大于1.0μm的平均干燥厚度（d）和界面处的平均厚度变化（DELTAd）上层磁性层和下层非磁性层之间的距离不大于d / 2。磁记录介质表现出优异的电磁特性，运行性能和耐久性。

9. 发明授权

US5811166A Magnetic recording medium 失效
公开(公告)号：US5811166A
公开(公告)日：1998-09-22
申请号：US759192
申请日：1996-12-04
申请人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
发明人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
IPC分类号： G11B5/66 , G11B5/70 , G11B5/716 , G11B5/733 , G11B5/738 , G11B5/842 , G11B5/848
CPC分类号： G11B5/848 , G11B5/70 , G11B5/716 , G11B5/733 , G11B5/738 , G11B5/842 , Y10S428/90 , Y10T428/12472 , Y10T428/24355 , Y10T428/24942 , Y10T428/25 , Y10T428/253 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265 , Y10T428/269 , Y10T428/31551 , Y10T428/31721 , Y10T428/31855
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising a binder having dispersed therein a ferromagnetic powder which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet, wherein the upper magnetic layer has an average dry thickness (d) of not more than 1.0 .mu.m and an average thickness variation (.sup..DELTA. d) at the interface between the upper magnetic layer and lower non-magnetic layer is not more than d/2. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.

10. 发明授权

US5792543A Magnetic recording medium 失效
公开(公告)号：US5792543A
公开(公告)日：1998-08-11
申请号：US760595
申请日：1996-12-04
申请人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
发明人： Kiyomi Ejiri , Hiroo Inaba , Shinji Saito , Satoru Hayakawa
IPC分类号： G11B5/66 , G11B5/70 , G11B5/716 , G11B5/733 , G11B5/738 , G11B5/842 , G11B5/848
CPC分类号： G11B5/848 , G11B5/70 , G11B5/716 , G11B5/733 , G11B5/738 , G11B5/842 , Y10S428/90 , Y10T428/12472 , Y10T428/24355 , Y10T428/24942 , Y10T428/25 , Y10T428/253 , Y10T428/256 , Y10T428/257 , Y10T428/258 , Y10T428/259 , Y10T428/265 , Y10T428/269 , Y10T428/31551 , Y10T428/31721 , Y10T428/31855
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having provided thereon at least a lower non-magnetic layer comprising a binder having dispersed therein a non-magnetic powder and an upper magnetic layer comprising a binder having dispersed therein a ferromagnetic powder which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet, wherein the upper magnetic layer has an average dry thickness (d) of not more than 1.0 .mu.m and an average thickness variation (.sup..DELTA. d) at the interface between the upper magnetic layer and lower non-magnetic layer is not more than d/2. The magnetic recording medium exhibits excellent electromagnetic characteristics, running properties, and durability.

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