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1. 发明授权

US6074724A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US6074724A
公开(公告)日：2000-06-13
申请号：US918864
申请日：1997-08-26
申请人： Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
发明人： Hiroo Inaba , Kiyomi Ejiri , Masaki Suzuki , Koji Naoe , Yuichiro Murayama , Hiroaki Takano
IPC分类号： G11B5/702 , G11B5/706
CPC分类号： B82Y15/00 , G11B5/7021 , G11B5/7022 , G11B5/70621 , Y10S428/90 , Y10T428/24355 , Y10T428/25 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium is disclosed, which comprises a support having thereon a magnetic layer comprising a binder and a ferromagnetic powder dispersed therein, wherein said binder comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage, and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG.; and further a magnetic recording medium is disclosed, comprising a support having thereon in succession an undercoat layer comprising a binder U and an inorganic powder dispersed therein and a magnetic layer comprising a binder M and a ferromagnetic powder dispersed therein, wherein at least either of the binder U or M comprises a polyurethane resin having at least one cyclic hydrocarbon group and at least one ether linkage and said ferromagnetic powder is a ferromagnetic metallic powder which comprises Fe and has a mean major-axis length of from 0.05 to 0.19 .mu.m and a crystallite size of from 100 to 230 .ANG..
摘要翻译：公开了一种磁记录介质，其包括其上具有包含粘合剂和分散在其中的铁磁粉末的磁性层的载体，其中所述粘合剂包含具有至少一个环状烃基和至少一个醚键的聚氨酯树脂，并且所述铁磁性粉末是含铁的铁磁性金属粉末，其平均长轴长度为0.05至0.19μm，微晶尺寸为100至230安培; 并且还公开了一种磁记录介质，包括其上连续地具有包含粘合剂U和分散在其中的无机粉末的底涂层的支撑体和包含粘合剂M和分散在其中的铁磁性粉末的磁性层，其中，粘合剂U或M包含具有至少一个环状烃基和至少一个醚键的聚氨酯树脂，并且所述铁磁性粉末是包含Fe并且具有0.05至0.19μm的平均长轴长度的铁磁性金属粉末，以及微晶尺寸为100至230安培。

2. 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。

3. 发明授权

US5447782A Magnetic recording medium having a specified thickness relationship between a nonmagnetic underlayer and overcoated magnetic layers 失效
标题翻译：在非磁性底层和外涂磁性层之间具有特定厚度关系的磁记录介质
公开(公告)号：US5447782A
公开(公告)日：1995-09-05
申请号：US143063
申请日：1993-10-29
申请人： Hiroo Inaba , Kiyomi Ejiri , Koji Naoe
发明人： Hiroo Inaba , Kiyomi Ejiri , Koji Naoe
IPC分类号： C09D5/23 , G11B5/70 , G11B5/716 , G11B5/73 , G11B5/738 , G11B5/00
CPC分类号： G11B5/70 , G11B5/716 , G11B5/738 , Y10S428/90 , Y10T428/24942 , Y10T428/2495 , Y10T428/24967 , Y10T428/256 , Y10T428/257
摘要： Disclosed is a magnetic recording medium, comprising (a) a nonmagnetic flexible support, (b) a lower nonmagnetic layer provided on the support and comprising a nonmagnetic particle and a binder, and (c) a magnetic layer provided on the nonmagnetic layer and comprising a ferromagnetic particle and a binder, wherein (i) the magnetic layer comprises at least two layers comprising a lower magnetic layer provided on the lower nonmagnetic layer and an upper magnetic layer provided on the lower magnetic layer, (ii) a ratio of the lower nonmagnetic layer thickness to the total magnetic layer thickness of the lower magnetic layer and the upper magnetic layer is from 1 to 50, (iii) the upper magnetic layer and the lower magnetic layer have a difference in coercive force of at least 80 Oe, and (iv) the lower nonmagnetic layer and at least the lower magnetic layer are formed by a wet-on-wet coating method.
摘要翻译：公开了一种磁记录介质，包括（a）非磁性柔性支撑体，（b）设置在载体上的下部非磁性层，并且包括非磁性颗粒和粘合剂，和（c）设置在非磁性层上的磁性层，铁磁颗粒和粘合剂，其中（i）磁性层包括至少两层，包括设置在下部非磁性层上的下部磁性层和设置在下部磁性层上的上部磁性层，（ii）下部磁性层的比例非磁性层厚度与下部磁性层和上部磁性层的总磁性层厚度的比值为1〜50，（iii）上部磁性层和下部磁性层的矫顽力差异至少为80 Oe，（iv）下部非磁性层和至少下部磁性层通过湿式湿式涂覆法形成。

4. 发明授权

US5804283A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5804283A
公开(公告)日：1998-09-08
申请号：US968860
申请日：1997-11-05
申请人： Hiroo Inaba , Masaki Suzuki , Naoto Abe , Toshiyuki Kitahara , Satoshi Matsubaguchi , Hiroaki Takano
发明人： Hiroo Inaba , Masaki Suzuki , Naoto Abe , Toshiyuki Kitahara , Satoshi Matsubaguchi , Hiroaki Takano
IPC分类号： G11B5/70 , G11B5/702 , G11B5/738 , G11B5/68
CPC分类号： G11B5/70 , G11B5/7022 , G11B5/738 , Y10S428/90 , Y10T428/24355 , Y10T428/24942 , Y10T428/24975 , Y10T428/265 , Y10T428/31609
摘要： A magnetic recording medium prepared by a process which comprises providing a nonmagnetic layer comprising a nonmagnetic powder and a binder on a nonmagnetic support, and then providing one or more magnetic layers containing at least a ferromagnetic powder and a binder on the nonmagnetic layer while the nonmagnetic layer is wet, wherein the thickness of the magnetic layer is from 0.07 to 0.20 .mu.m, the magnetic layer comprises a resin curable by a polyisocyanate as a binder, the nonmagnetic layer is a layer cured by a polyisocyanate, and the ratio N/Fe in the magnetic layer is from 0.010 to 0.090 as determined by an X-ray photoelectric spectrophotometer; and a magnetic recording medium comprising a nonmagnetic support having thereon a lower nonmagnetic layer comprising a nonmagnetic powder and a binder, and further thereon a magnetic layer comprising at least a ferromagnetic metal powder and a binder, wherein the magnetic layer has a thickness of from 0.07 to 0.20 .mu.m, the magnetic layer has a maximum magnetic flux density Bm of from 3,700 to 6,000 G as measured in an external magnetic field of 10 kOe, the magnetic layer has a coercive force Hc of from 2,000 to 3,000 Oe, the magnetic layer has a center line surface roughness Ra of from 1.0 to 3.0 nm, and the nonmagnetic support has a center line surface roughness of from 0.5 to 7.0 nm on the side thereof to which the lower non layer is provided.
摘要翻译：一种磁记录介质，其制备方法包括在非磁性载体上提供包含非磁性粉末和粘合剂的非磁性层，然后在非磁性层上提供至少含有铁磁性粉末和粘结剂的一个或多个磁性层，而非磁性层是湿的，其中磁性层的厚度为0.07至0.20μm，磁性层包含可通过多异氰酸酯作为粘合剂固化的树脂，非磁性层是由多异氰酸酯固化的层，N / Fe 在磁性层中，由X射线光电分光光度计测定为0.010〜0.090; 以及包含非磁性载体的磁记录介质，其上具有包含非磁性粉末和粘合剂的下部非磁性层，并且还包括至少包含强磁性金属粉末和粘结剂的磁性层，其中所述磁性层的厚度为0.07 至0.20μm，磁性层的磁通密度Bm为10kOe的外部磁场中测定的3,700〜6,000G，磁性层的矫顽力Hc为2000〜3000Oe，磁性层具有1.0至3.0nm的中心线表面粗糙度Ra，并且非磁性载体在其设置较低非层的一侧具有0.5至7.0nm的中心线表面粗糙度。

5. 发明授权

US5847905A Cleaning medium for magnetic recording devices, in which the cleaning medium includes a substrate, a lower coating layer containing non-magnetic inorganic particles, and a cleaning area 失效
标题翻译：用于磁记录装置的清洁介质，其中清洁介质包括基底，含有非磁性无机颗粒的下涂层和清洁区
公开(公告)号：US5847905A
公开(公告)日：1998-12-08
申请号：US789563
申请日：1997-01-28
申请人： Hiroo Inaba , Masaki Suzuki , Satoshi Matsubaguchi , Hiroaki Takano
发明人： Hiroo Inaba , Masaki Suzuki , Satoshi Matsubaguchi , Hiroaki Takano
IPC分类号： G11B5/187 , G11B5/41 , G11B15/62
CPC分类号： G11B5/41 , G11B15/62 , G11B5/1871
摘要： A cleaning medium for magnetic recording devices comprises a non-magnetic substrate and a lower coating layer, which is overlaid upon the non-magnetic substrate and primarily contains a binder and non-magnetic inorganic particles dispersed in the binder. The cleaning medium also comprises a cleaning layer, which is overlaid upon the lower coating layer and contains a binder and inorganic particles dispersed in the binder, the inorganic particles at least containing ferromagnetic particles. The thickness of the cleaning layer falls within the range of 0.05 .mu.m to 1.0 .mu.m, and the squareness ratio of the cleaning layer falls within the range of 0.6 to 0.98. The cleaning medium yields little wear of magnetic heads, has good cleaning characteristics, and is capable of trueing up the shape of an end of a cleaned magnetic head into a sharp shape, such that the compatibility of the magnetic head with both of a metal evaporated tape and a metal powder tape in coming into close and uniform contact with the tapes may be kept good.
摘要翻译：用于磁记录装置的清洁介质包括非磁性基底和下涂层，其覆盖在非磁性基底上并且主要包含分散在粘合剂中的粘合剂和非磁性无机颗粒。清洁介质还包括清洁层，其覆盖在下涂层上并且包含粘合剂和分散在粘合剂中的无机颗粒，所述无机颗粒至少含有铁磁颗粒。清洗层的厚度在0.05μm〜1.0μm的范围内，清洗层的矩形比落在0.6〜0.98的范围内。清洁介质的磁头几乎没有磨损，具有良好的清洁特性，并且能够将清洁的磁头的端部的形状实现为尖锐的形状，使得磁头与金属蒸发的相容性胶带和与胶带紧密均匀接触的金属粉末胶带可能保持良好。

6. 发明授权

US5908683A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5908683A
公开(公告)日：1999-06-01
申请号：US844388
申请日：1997-04-18
申请人： Masaki Suzuki , Hiroo Inaba , Satoshi Matsubaguchi , Hiroaki Takano
发明人： Masaki Suzuki , Hiroo Inaba , Satoshi Matsubaguchi , Hiroaki Takano
IPC分类号： G11B5/70 , G11B5/733 , G11B5/738 , G11B5/708
CPC分类号： G11B5/70 , G11B5/733 , G11B5/738 , Y10S428/90 , Y10T428/256 , Y10T428/257 , Y10T428/265
摘要： A magnetic recording medium comprises a non-magnetic substrate, a lower coating layer, which is overlaid upon the non-magnetic substrate and primarily contains a binder and inorganic particles dispersed in the binder, and a magnetic layer, which is overlaid upon the lower coating layer and is constituted of at least a single layer. The magnetic layer contains at least a binder and ferromagnetic metal particles dispersed in the binder. The thickness of the magnetic layer falls within the range of 0.05 .mu.m to 0.5 .mu.m. The surface roughness of a top magnetic layer is at most 3 nm. The lower coating layer contains a fatty acid. An increase in the number of small protrusions, which have a height of at least 30 nm, does not occur substantially on the surface of the magnetic layer after the magnetic recording medium has been stored for seven days under environmental conditions of a temperature of 60.degree. C. and a relative humidity of 90%.
摘要翻译：磁记录介质包括非磁性基底，下涂层，其覆盖在非磁性基底上并且主要包含分散在粘合剂中的粘合剂和无机颗粒以及覆盖在下涂层上的磁性层层，并且由至少单层构成。磁性层至少包含粘合剂和分散在粘合剂中的强磁性金属颗粒。磁性层的厚度在0.05μm〜0.5μm的范围内。顶层磁性层的表面粗糙度为3nm以下。下涂层含有脂肪酸。在磁记录介质已经在温度为60°的环境条件下储存了七天之后，磁性层的表面上基本上没有出现高度至少为30nm的小突起的数量的增加。 C.相对湿度为90％。

7. 发明授权

US06395400B1 Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US06395400B1
公开(公告)日：2002-05-28
申请号：US09351325
申请日：1999-07-12
申请人： Hiroo Inaba , Masaki Suzuki , Hiroaki Takano , Masatoshi Takahashi
发明人： Hiroo Inaba , Masaki Suzuki , Hiroaki Takano , Masatoshi Takahashi
IPC分类号： B32B2708
CPC分类号： G11B5/7305 , B32B27/20 , B32B27/34 , Y10S428/90 , Y10T428/31728 , Y10T428/31765
摘要： A magnetic recording medium using a biaxially oriented aromatic polyamide film as a nonmagnetic support resulting in hardly any improper windings or edge damages. The magnetic recording medium includes a magnetic layer containing ferromagnetic powders dispersed in a binder formed on the nonmagnetic support, wherein the biaxially oriented aromatic support has a ratio of the loss tangent at a temperature of 40° C. to the loss tangent at a temperature of 100° C. of 0.7 or higher.
摘要翻译：使用双轴取向芳族聚酰胺薄膜作为非磁性载体的磁记录介质几乎不产生任何不正确的绕组或边缘损坏。该磁记录介质包括含有分散在形成在非磁性载体上的粘合剂中的铁磁性粉末的磁性层，其中双轴取向芳族载体在40℃温度下的损耗角正切与在 100℃为0.7以上。

8. 发明授权

US5922454A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5922454A
公开(公告)日：1999-07-13
申请号：US862262
申请日：1997-05-23
申请人： Hiroo Inaba , Masaki Suzuki , Satoshi Matsubagichi , Hiroaki Takano
发明人： Hiroo Inaba , Masaki Suzuki , Satoshi Matsubagichi , Hiroaki Takano
IPC分类号： G11B5/70 , G11B5/716 , G11B5/738 , G11B5/706
CPC分类号： G11B5/716 , G11B5/70 , G11B5/738 , Y10T428/257 , Y10T428/258 , Y10T428/265
摘要： A magnetic recording medium is disclosed, comprising a lower coating layer mainly comprising an inorganic powder and a binder provided on a non-magnetic support, and one or more magnetic layers comprising at least a ferromagnetic metal powder and a binder provided on the lower coating layer, wherein the thickness of said magnetic layers is from 0.05 .mu.m to 0.8 .mu.m and the magnetic particle incorporated in said magnetic layers comprises Fe as a main component, Co in an amount of from 10 atm-% to 40 atm-% and Y is an amount of from 1.5 atm-% to 10 atm-%, based on Fe.
摘要翻译：公开了一种磁记录介质，包括主要包含无机粉末和设置在非磁性载体上的粘合剂的下涂层和至少包含强磁性金属粉末和粘合剂的一个或多个磁性层，所述磁性层设置在下涂层其中所述磁性层的厚度为0.05μm至0.8μm，并且所述磁性层中包含的磁性颗粒包含Fe作为主要成分，Co的量为10atm％至40atm％，Y为以Fe为基准，其含量为1.5atm％至10atm％。

9. 发明授权

US5645917A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5645917A
公开(公告)日：1997-07-08
申请号：US873201
申请日：1992-04-24
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.
摘要翻译：公开了一种磁记录介质，其包括非磁性载体，其上设置有至少一个包含分散有非磁性粉末的粘合剂的下部非磁性层和包含分散有铁磁性粉末的粘合剂的上层磁性层，被涂覆在所述下部非磁性层上，而下部非磁性层是湿的，其中上部磁性层的平均干燥厚度（d）不大于1.0μm，平均厚度变化（DELTA d）在上磁层与下层非磁性层之间的界面不大于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

US5455112A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5455112A
公开(公告)日：1995-10-03
申请号：US10846
申请日：1993-01-29
申请人： Hiroo Inaba , Kiyomi Ejiri
发明人： Hiroo Inaba , Kiyomi Ejiri
IPC分类号： C09C1/48 , C09D5/23 , C09D7/12 , G11B5/73 , G11B5/733 , G11B5/738 , B32B5/16 , G11B5/66
CPC分类号： G11B5/738 , G11B5/733 , Y10S428/90 , Y10S428/928 , Y10T428/25 , Y10T428/256 , Y10T428/257 , Y10T428/259 , Y10T428/26 , Y10T428/265
摘要： A magnetic recording medium produced by providing a lower non-magnetic layer comprising a non-magnetic powder dispersed in a binder on a non-magnetic support followed by providing, while the lower non-magnetic layer is still wet, an upper magnetic layer comprising a ferromagnetic powder dispersed in a binder on the lower non-magnetic layer, wherein a mean thickness of the upper magnetic layer is 1.0 .mu.m or less and the non-magnetic powder in the lower non-magnetic layer comprises (A) a granular inorganic powder having a mean particle size of from 0.01 to 0.08 .mu.m, (B) a carbon black powder having a mean particle size of from 0.01 to 0.04 .mu.m and (C) a powder component having a larger mean particle size than the mean particle size of each of powders (A) and (B). The magnetic recording medium has good electromagnetic characteristics and has excellent running durability with little edge damage after repeated running.
摘要翻译：提供一种磁记录介质，其通过在非磁性载体上提供分散在粘合剂中的非磁性粉末的下部非磁性层，然后在下部非磁性层仍然是湿的同时提供包括分散在下层非磁性层上的粘合剂中的铁磁性粉末，其中上磁性层的平均厚度为1.0μm以下，下部非磁性层中的非磁性粉末包含（A）粒状无机粉末平均粒径为0.01〜0.08μm，（B）平均粒径为0.01〜0.04μm的炭黑粉末，（C）平均粒径大于平均粒径的粉末成分的粉末（A）和（B）。磁记录介质具有良好的电磁特性，具有优异的运行耐久性，反复运行后边缘损伤小。

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