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1. 发明授权

US5084341A Magnetic recording medium comprising a polyurethane resin having a thio, thiocarboxy or dithiocarboxy group; a vinyl chloride resin containing a polar group and a hyroxy group; and a polyisocyanate compound 失效
标题翻译：含有THIO，三羟甲基或二烷氧基的聚氨酯树脂的磁记录介质; 含有极性基团和羟基的VINYL氯化物树脂; 和聚异氰酸酯化合物
公开(公告)号：US5084341A
公开(公告)日：1992-01-28
申请号：US421025
申请日：1989-10-13
申请人： Hiroshi Hashimoto , Tsutomu Okita , Kiyomi Ejiri
发明人： Hiroshi Hashimoto , Tsutomu Okita , Kiyomi Ejiri
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/706
CPC分类号： G11B5/7022 , Y10S428/90 , Y10T428/256 , Y10T428/31609
摘要： A magnetic recording medium comprising a non-magnetic support having provided thereon a magnetic layer comprising ferromagnetic metal particles dispersed in a binder, wherein said ferromagnetic metal particles have a crystalline size of 250 .ANG. or less, and said binder comprises(i) a polyurethane resin having an S-containing group which is at least one member selected from the group consisting of --SH, ##STR1## said polyurethane resin being one which has been synthesized by the use of a polyhydric alcohol, as a crosslinking agent, having at least three hydroxyl groups and has a branched and crosslinked structure,(ii) a vinyl chloride resin containing an --OH group and a polar group which is at least one member selected from the group consisting of --SO.sub.3 M, --SO.sub.4 M, --OPO(OM).sub.2, --PO(OM).sub.2, --COOM, --NR.sub.2 and --NR.sub.3.sup..sym. (wherein M represents a hydrogen atom or an alkali metal, and R represents an alkyl group having up to 4 carbon atoms), and(iii) a polyisocyanate compound.
摘要翻译：一种磁记录介质，包括非磁性载体，其上设置有包含分散在粘合剂中的铁磁金属颗粒的磁性层，其中所述强磁性金属颗粒的结晶尺寸为250纳米或更小，并且所述粘合剂包括（i）聚氨酯树脂具有含S基团，其是选自-SH，所述聚氨酯树脂中的至少一种，所述聚氨酯树脂是通过使用多元醇合成的聚氨酯树脂作为交联剂，其具有至少三个羟基，并且具有支链和交联结构，（ii）含有-OH基团和极性基团的氯乙烯树脂，其是选自-SO 3 M，-SO 4 M，-OPO（OM）2中的至少一种，-PO（OM）2，-COOM，-NR2和-NR3（+）（其中M表示氢原子或碱金属，R表示具有至多4个碳原子的烷基），和（iii）多异氰酸酯化合物。

2. 发明授权

US4959263A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US4959263A
公开(公告)日：1990-09-25
申请号：US195224
申请日：1988-05-18
申请人： Masashi Aonuma , Tsutomu Okita , Hiroshi Hashimoto , Hiroaki Araki , Kiyotaka Fukino , Kiyomi Ejiri
发明人： Masashi Aonuma , Tsutomu Okita , Hiroshi Hashimoto , Hiroaki Araki , Kiyotaka Fukino , Kiyomi Ejiri
IPC分类号： G11B5/702 , G11B5/712 , G11B5/714
CPC分类号： G11B5/7026 , G11B5/712 , G11B5/714 , Y10S428/90 , Y10T428/257
摘要： A magnetic recording medium is described, comprising a nonmagnetic support having thereon a magnetic layer containing a binder which is cross-linkable or polymerizable by radiation irradiation and ferromagnetic particles, the ferromagnetic particles being metal or metal alloy particles mainly comprising iron having a crystal size of 300 .ANG. or less, having an atomic ratio of oxygen atoms to iron atoms of from 1.6 to 3.0 on the surface of the particles, and the magnetic layer having been irradiated with radiation, and comprising a nonmagnetic support having thereon a magnetic layer containing a binder comprising thermoplastic resins, thermosetting resins, reactive type resins and mixtures thereof and ferromagnetic particles, said ferromagnetic particles being metal or metal alloy particles mainly comprising iron having a crystal size of 250 .ANG. or less, and having an atomic ratio of oxygen atoms to iron atoms of from 1.6 to 3.0 on the surface of said particles.
摘要翻译：描述了一种磁记录介质，其包括其上具有含有可通过辐射照射和铁磁性颗粒可交联或可聚合的粘合剂的磁性层的非磁性载体，所述铁磁颗粒是主要包含具有晶体尺寸的铁的金属或金属合金颗粒 300或更小，在颗粒表面上的氧原子与铁原子的原子比为1.6至3.0，并且已经辐照辐照的磁性层，并且包含其上具有含有粘合剂的磁性层的非磁性载体包括热塑性树脂，热固性树脂，反应型树脂及其混合物和铁磁颗粒，所述铁磁性颗粒是主要包含结晶尺寸为250或更小的铁并且具有氧原子与铁原子的原子比的金属或金属合金颗粒在所述颗粒的表面上为1.6至3.0。

3. 发明授权

US5176955A Magnetic recording medium comprising ferromagnetic powder having a pH of at least 7 dispersed in a vinyl chloride copolymer using an aromatic phoshoric, phosphonic or sulfonic acid dispersant 失效
标题翻译：磁性记录介质，其包含使用芳族磷酸，膦酸或磺酸分散剂分散在氯乙烯共聚物中的pH至少为7的铁磁性粉末
公开(公告)号：US5176955A
公开(公告)日：1993-01-05
申请号：US687133
申请日：1991-04-18
申请人： Kiyomi Ejiri , Hiroaki Araki , Hiroshi Hashimoto
发明人： Kiyomi Ejiri , Hiroaki Araki , Hiroshi Hashimoto
IPC分类号： C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/70 , G11B5/702 , G11B5/706 , G11B5/708 , G11B5/84 , G11B5/842
CPC分类号： G11B5/7013 , G11B5/7023 , G11B5/706 , Y10S428/90 , Y10T428/265 , Y10T428/3158 , Y10T428/31605 , Y10T428/31609
摘要： A magnetic recording medium improved in electromagnetic characteristics, running durability and running properties is disclosed, comprising a non-magnetic support and at least one magnetic layer formed thereon, said magnetic layer having a ferromagnetic powder dispersed in a binder, wherein said magnetic layer contains at least one member selected from the group consisting of an aromatic phosphoric acid or a derivative thereof, an aromatic phosphonic acid or a derivative thereof, and an aromatic sulfonic acid or a derivative thereof, and wherein said ferromagnetic powder has a pH of at least 7, and said binder is a vinyl chloride copolymer having an epoxy group and a hydroxyl group attached to an alkyl chain group. Also, a method for producing a magnetic recording medium is disclosed which comprises the steps of kneading and dispersing a ferromagnetic powder having a pH of at least 7, at least one member selected from the group consisting of an aromatic phosphoric acid or a derivative thereof, an aromatic phosphonic acid or a derivative thereof, and an aromatic sulfonic acid or a derivative thereof, and a vinyl chloride copolymer having an epoxy group and a hydroxyl group attached to an alkyl chain group, together with a solvent; and then optionally adding at least one additive thereto, and mixing to prepare a magnetic coating; and then applying the resulting magnetic coating to a non-magnetic support; drying, calendering and then heat treating.
摘要翻译：公开了一种提高电磁特性，运行耐久性和运行性能的磁记录介质，其包括非磁性支撑体和形成在其上的至少一个磁性层，所述磁性层具有分散在粘合剂中的铁磁粉末，其中所述磁性层包含在选自芳香族磷酸或其衍生物，芳香族膦酸或其衍生物，芳香族磺酸或其衍生物的至少一种，其中所述铁磁粉末的pH至少为7，并且所述粘合剂是具有连接到烷基链基团上的环氧基和羟基的氯乙烯共聚物。另外，公开了一种制造磁记录介质的方法，该方法包括以下步骤：将pH至少为7的铁磁性粉末，至少一种选自芳族磷酸或其衍生物，芳香族膦酸或其衍生物，芳香族磺酸或其衍生物，以及具有与烷基链基连接的环氧基和羟基的氯乙烯共聚物与溶剂; 然后任选地向其中加入至少一种添加剂，并混合以制备磁性涂层; 然后将所得的磁性涂层施加到非磁性载体上; 干燥，压延，然后热处理。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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。

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