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1. 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。

2. 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。

3. 发明授权

US5093191A Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range 失效
标题翻译：含有指定结晶尺寸的氟化物颗粒的磁性记录介质，并且在表面上的氯化物比例在指定范围内
公开(公告)号：US5093191A
公开(公告)日：1992-03-03
申请号：US486329
申请日：1990-02-28
申请人： Kunihiko Sano , Hiroaki Doushita , Kiyomi Ejiri , Hiroyuki Tahara
发明人： Kunihiko Sano , Hiroaki Doushita , Kiyomi Ejiri , Hiroyuki Tahara
IPC分类号： C08K3/02 , C08L27/06 , C08L75/00 , C08L75/04 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/706 , G11B5/714
CPC分类号： G11B5/714 , G11B5/7022 , G11B5/7023 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/2982 , Y10T428/31 , Y10T428/3158 , Y10T428/31605 , Y10T428/31609
摘要： A magnetic recording medium is disclosed, comprising a non-magnetic support having thereon a magnetic layer comprising ferromagnetic particles and a binder containing a vinyl chloride polymer, wherein the crystallite size of the ferromagnetic particles is 250 angstrom or less, the vinyl chloride polymer is present in an amount of 20 to 50% by weight based on the binder, and an integrated intensity ratio, which is denoted by .alpha., of Cl-2P spectrum to Fe-2P (3/2) spectrum in the surface of the magnetic layer as measured by X-ray photoelectron spectroscopy is 0.20/1
摘要翻译：公开了一种磁记录介质，包括其上具有包含铁磁颗粒的磁性层和含有氯乙烯聚合物的粘合剂的非磁性载体，其中铁磁颗粒的微晶尺寸为250埃或更小，氯乙烯聚合物存在相对于粘合剂为20〜50重量％，由磁性层表面的Cl-2P光谱与Fe-2P（3/2）光谱的α表示的积分强度比，通过X射线光电子能谱测量为0.20 / 1 <α<0.42 / 1。磁记录材料具有优异的运行性能和耐久性，并且几乎不会导致头部堵塞。

4. 发明授权

US5096774A Magnetic recording medium containing ferromagnetic particles with specified crystallite sizes and wherein the ratio of chlorine to iron at the surface is within a specified range 失效
标题翻译：含有指定结晶尺寸的氟化物颗粒的磁性记录介质，并且在表面上的氯化物比例在指定范围内
公开(公告)号：US5096774A
公开(公告)日：1992-03-17
申请号：US529282
申请日：1990-05-29
申请人： Kunihiko Sano , Hiroaki Doushita , Kiyomi Ejiri , Hiroyuki Tahara
发明人： Kunihiko Sano , Hiroaki Doushita , Kiyomi Ejiri , Hiroyuki Tahara
IPC分类号： C09D5/23 , C09D175/00 , C09D175/04 , G11B5/702 , G11B5/714
CPC分类号： G11B5/714 , G11B5/7023 , Y10S428/90 , Y10T428/25 , Y10T428/257 , Y10T428/2982 , Y10T428/31 , Y10T428/3158 , Y10T428/31605 , Y10T428/31609
摘要： A magnetic recording medium is disclosed, which comprises a non-magnetic support having thereon a magnetic layer comprising ferromagnetic fine particles and a binder containing a vinyl chloride polymer, wherein the crystalline size of the ferromagnetic fine particles is from 350 to 500 angstrom, the content of the vinyl chloride polymer is from 20 to 50% by weight based on the amount of the total binder, and an integrated intensity ratio .alpha. of the Cl-2P spectrum to the Fe-2P (3/2) spectrum at the surface of the magnetic layer measured by an X-ray photoelectron spectroscopy is 1.80/1>.alpha.>0.50/1.
摘要翻译：公开了一种磁记录介质，其包括其上具有包含铁磁细颗粒的磁性层和含有氯乙烯聚合物的粘合剂的非磁性载体，其中铁磁性细颗粒的结晶尺寸为350-500埃，含量的氯乙烯聚合物的总重量为20〜50重量％，Cl-2P光谱与Fe-2P（3/2）光谱在表面的积分强度比α 通过X射线光电子能谱测量的磁性层是1.80 / 1> 0.50 / 1。

5. 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。

6. 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.

7. 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.

8. 发明授权

US5780141A Magnetic recording medium 失效
公开(公告)号：US5780141A
公开(公告)日：1998-07-14
申请号：US760626
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.

9. 发明授权

US5763046A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5763046A
公开(公告)日：1998-06-09
申请号：US760071
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 nonmagnetic support having provided thereon at least a lower nonmagnetic 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. CROSS-REFERENCE TO RELATED APPLICATION
摘要翻译：公开了一种磁记录介质，其包括至少一个非磁性层的非磁性载体，所述至少一个非磁性层包括其中分散有非磁性粉末的粘合剂和包含粘合剂的上部磁性层，所述粘合剂分散有已经涂覆在其上的铁磁性粉末所述下部非磁性层的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）在上磁层和下层非磁性层不大于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。相关申请的交叉引用

10. 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。

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