公开(公告)号：US06429411B1

公开(公告)日：2002-08-06

申请号：US09456811

申请日：1999-12-08

申请人： Osamu Iwasaki ,  Satoru Hayakawa ,  Hiroo Inaba ,  Takeshi Nagata

发明人： Osamu Iwasaki ,  Satoru Hayakawa ,  Hiroo Inaba ,  Takeshi Nagata

IPC分类号： G02B704

CPC分类号： G11B5/84 ,  B23K26/066 ,  B23K26/067 ,  B23K26/082 ,  B23K26/0846 ,  B23K2101/16 ,  G11B5/78 ,  G11B23/113

摘要： The magnetic tape processing method and apparatus allow at least one of a laser beam or laser beams in a visible region and a laser beam or laser beams in an ultraviolet region to be incident on a backing layer of a magnetic tape while transporting the magnetic tape in a lengthwise direction of the magnetic tape and process the backing layer by means of the laser beam or laser beams to form recesses on the backing layer. The processed magnetic tape is composed of a base layer, a magnetic layer formed on one surface of the base layer and the backing layer formed on another surface of the base layer and having recesses which are formed by processing the backing layer by means of the laser beam or laser beams. The method and apparatus can efficiently manufacture the magnetic tape having excellent characteristics such that the occurrence of the slip of the magnetic tape is not caused on a capstan roller and the like, even if the transportation speed of the tape is increased in a magnetic tape manufacturing apparatus, and furthermore a size of cupping of the magnetic tape is small.

摘要翻译： 磁带处理方法和装置允许可视区域中的激光束或激光束中的至少一个以及紫外线区域中的激光束或激光束入射到磁带的背衬层上，同时将磁带传送到 磁带的长度方向，并通过激光束或激光束处理背衬层，以在背衬层上形成凹陷。 处理后的磁带由基底层，形成在基底层的一个表面上的磁性层和形成在基底层的另一个表面上的背衬层组成，具有通过激光加工背衬层形成的凹部 光束或激光束。 该方法和装置可以有效地制造具有优异特性的磁带，即使在磁带制造中磁带的传送速度增加也不会在绞盘辊等上引起磁带滑动的发生 装置，此外，磁带的拔罐尺寸很小。

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。

公开(公告)号：US6020022A

公开(公告)日：2000-02-01

申请号：US846094

申请日：1997-04-25

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 which has been coated on said lower non-magnetic layer while the lower non-magnetic layer is wet or in a dry state, wherein the coating solution for the lower non-magnetic layer having a thixotropic property and the lower non-magnetic layer containing either (a) an acicular inorganic powder having a Mohs hardness of 3 or more and a major axis length of 0.3 .mu.m or less or (b) a spherical inorganic powder other than carbon black having an average primary particle size of 0.08 .mu.m or less. 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非磁性粉末分散在其中的粘合剂的下部非磁性层，以及上部磁性层，其上涂覆有所述下部非磁性层， 磁性层，而下部非磁性层是湿的或处于干燥状态，其中具有触变性的下部非磁性层的涂层溶液和下部非磁性层包含（a）针状无机粉末，其具有 莫氏硬度为3以上，长轴长度为0.3μm以下，（b）平均一次粒径为0.08μm以下的碳黑以外的球状无机粉末。 磁记录介质表现出优异的电磁特性，运行性能和耐久性。

公开(公告)号：US5851622A

公开(公告)日：1998-12-22

申请号：US761081

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 ,  G11B5/708

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.

公开(公告)号：US5827600A

公开(公告)日：1998-10-27

申请号：US760199

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： G11B5/70 ,  G11B5/716 ,  G11B5/733 ,  G11B5/738 ,  G11B5/842 ,  G11B5/848 ,  G11B5/66

CPC分类号： G11B5/70 ,  G11B5/716 ,  G11B5/733 ,  G11B5/738 ,  G11B5/842 ,  G11B5/848 ,  Y10S428/90 ,  Y10T428/24355 ,  Y10T428/25 ,  Y10T428/265

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.

公开(公告)号：US5795646A

公开(公告)日：1998-08-18

申请号：US763620

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 ,  B32B5/16

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.

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。

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.

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.

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.