公开(公告)号：US4407894A

公开(公告)日：1983-10-04

申请号：US329822

申请日：1981-12-11

申请人： Sadao Kadokura ,  Takashi Tomie ,  Masahiko Naoe

发明人： Sadao Kadokura ,  Takashi Tomie ,  Masahiko Naoe

IPC分类号： H01F41/18 ,  C23C14/34 ,  G11B5/64 ,  G11B5/85 ,  G11B5/851 ,  G11B5/852 ,  H01F10/02 ,  C23C15/00

CPC分类号： G11B5/64 ,  G11B5/851 ,  Y10S428/90 ,  Y10T428/31678

摘要： Magnetic recording medium conventionally utilizes the in-plane magnetization mode, but, recently, the perpendicular magnetization mode utilizing the perpendicular anistropy of an hcp cobalt alloy layer, in which C axis is oriented normal to the layer surface, is proposed. The known perpendicular magnetic recording medium has been produced by an RF sputtering, but such medium is of too low flexibility to use it in the form of a magnetic tape. In addition, the production rate of the perpendicular magnetic recording medium by RF sputtering is very low.The perpendicular magnetic recording medium is very flexible due to particle pattern (FIGS. 10, 12 and 13) completely distinct from the conventional columnar pattern (FIGS. 8 and 11). In addition, the production rate is high, because the base (20) is located beside a space between the targets (T.sub.1, T.sub.2) of a sputtering device and further the magnetic field is generated perpendicularly to the sputtering surfaces (T.sub.1s, T.sub.2s) by a field coil (31) or magnets (32, 33). The present invention makes it possible to commercially produce the perpendicular magnetic recording medium, especially in the tape form.

摘要翻译： 磁记录介质常规地利用了平面内磁化模式，但是最近，提出了利用h轴钴合金层的垂直磁场的垂直磁化模式，其中C轴垂直于层表面。 已知的垂直磁记录介质是通过RF溅射制造的，但这种介质的灵活性太低，无法以磁带的形式使用。 此外，通过RF溅射的垂直磁记录介质的生产速率非常低。 垂直磁记录介质由于与传统柱状图（图8和11）完全不同的颗粒图案（图10,12和13）而非常柔软。 此外，由于基极（20）位于溅射装置的靶（T1，T2）之间的空间旁边，所以生产率高，并且还通过垂直于溅射表面（T1s，T2）的溅射表面（T1s，T2）产生磁场 励磁线圈（31）或磁体（32,33）。 本发明使得可以商业上生产垂直磁记录介质，特别是带状形式。

公开(公告)号：US4576700A

公开(公告)日：1986-03-18

申请号：US466863

申请日：1983-02-16

申请人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

发明人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

IPC分类号： C23C14/34 ,  G11B5/64 ,  G11B5/66 ,  G11B5/667 ,  G11B5/706 ,  G11B5/73 ,  G11B5/85 ,  G11B5/851 ,  H01F10/08 ,  H01F10/12 ,  H01F10/13 ,  H01F10/26 ,  H01F41/14 ,  G11B5/46

CPC分类号： G11B5/851 ,  G11B5/66

摘要： A magnetic recording medium conventionally utilizes the in-plane magnetization mode, but recently the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which the C axis is oriented perpendicular to the layer surface, has been proposed. The known perpendicular magnetic recording medium is produced by means of RF sputtering and comprises a Permalloy layer, as layer of a low coercive-force material, between the nonmagnetic base and the hcp cobalt alloy layer. The perpendicular anisotropy attained by the present invention in very excellent and is superior to that of a perpendicular recording medium having no Permalloy layer because a Co-Ta alloy is used as the layer of a low coercive-force material.

摘要翻译： 磁记录介质通常使用平面内磁化模式，但是最近提出了利用垂直于层表面C轴定向的hcp钴合金层的垂直各向异性的垂直磁化模式。 已知的垂直磁记录介质通过RF溅射制造，并且在非磁性基底和hcp钴合金层之间包括作为低矫顽力材料层的坡莫合金层。 由于使用Co-Ta合金作为低矫顽力材料层，本发明获得的垂直各向异性非常优异并优于不具有坡莫合金层的垂直记录介质。

公开(公告)号：US4842708A

公开(公告)日：1989-06-27

申请号：US22664

申请日：1987-03-06

申请人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

发明人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

IPC分类号： G11B5/66 ,  G11B5/851

CPC分类号： G11B5/66 ,  G11B5/851 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12931

摘要： A magnetic recording medium conventionally utilizes the in-plane magnetization mode, but recently the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which the C axis is oriented perpendicular to the layer surface, has been proposed. The known perpendicular magnetic recording medium is produced by means of RF sputtering and comprises a Permalloy layer, as layer of a low coercive-force material, between the nonmagnetic base and the hcp cobalt alloy layer. The perpendicular anisotropy attained by the present invention in very excellent and is superior to that of a perpendicular recording medium having no Permalloy layer because a Co-Ta alloy is used as the layer of a low coercive-force material.

摘要翻译： 磁记录介质通常使用平面内磁化模式，但是最近提出了利用垂直于层表面C轴定向的hcp钴合金层的垂直各向异性的垂直磁化模式。 已知的垂直磁记录介质通过RF溅射制造，并且在非磁性基底和hcp钴合金层之间包括作为低矫顽力材料层的坡莫合金层。 由于使用Co-Ta合金作为低矫顽力材料层，本发明获得的垂直各向异性非常优异并优于不具有坡莫合金层的垂直记录介质。

公开(公告)号：US4666788A

公开(公告)日：1987-05-19

申请号：US819229

申请日：1986-01-15

申请人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

发明人： Sadao Kadokura ,  Kazuhiko Honjo ,  Takashi Tomie ,  Masahiko Naoe

IPC分类号： G11B5/66 ,  G11B5/851 ,  H01F1/00

CPC分类号： G11B5/66 ,  G11B5/851 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12931

摘要： A magnetic recording medium conventionally utilizes the in-plane magnetization mode, but recently the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which the C axis is oriented perpendicular to the layer surface, has been proposed. The known perpendicular magnetic recording medium is produced by means of RF sputtering and comprises a Permalloy layer, as layer of a low coercive-force material, between the nonmagnetic base and the hcp cobalt alloy layer. The perpendicular anisotropy attained by the present invention is very excellent and is superior to that of a perpendicular recording medium having no Permalloy layer because a Co-Ta alloy is used as the layer of a low coercive-force material.

摘要翻译： 磁记录介质通常使用平面内磁化模式，但是最近提出了利用垂直于层表面C轴定向的hcp钴合金层的垂直各向异性的垂直磁化模式。 已知的垂直磁记录介质通过RF溅射制造，并且在非磁性基底和hcp钴合金层之间包括作为低矫顽力材料层的坡莫合金层。 由于使用Co-Ta合金作为低矫顽力材料的层，本发明获得的垂直各向异性非常优异，并且优于不具有坡莫合金层的垂直记录介质。

公开(公告)号：US4507364A

公开(公告)日：1985-03-26

申请号：US502662

申请日：1983-07-14

申请人： Sadao Kadokura ,  Takashi Tomie ,  Masahiko Naoe

发明人： Sadao Kadokura ,  Takashi Tomie ,  Masahiko Naoe

IPC分类号： H01F41/18 ,  C23C14/34 ,  G11B5/64 ,  G11B5/85 ,  G11B5/851 ,  G11B5/852 ,  C23C15/00

CPC分类号： G11B5/64 ,  G11B5/851 ,  Y10S428/90 ,  Y10T428/31678

摘要： Magnetic recording medium conventionally utilizes the in-plane magnetization mode, but, recently, the perpendicular magnetization mode utilizing the perpendicular anisotropy of an hcp cobalt alloy layer, in which C axis is oriented normal to the layer surface, is proposed. The known perpendicular magnetic recording medium has been produced by an RF sputtering, but such medium is of too low flexibility to use it in the form of a magnetic tape. In addition, the production rate of the perpendicular magnetic recording medium by RF sputtering is very low.The perpendicular magnetic recording medium is very flexible due to particle pattern (FIGS. 10, 12 and 13) completely distinct from the conventional columnar pattern (FIGS. 8 and 11). In addition, the production rate is high, because the base (20) is located beside a space between the targets (T.sub.1, T.sub.2) of a sputtering device and further the magnetic field is generated perpendicularly to the sputtering surfaces (T.sub.1s, T.sub.2s) by a field coil (32) or magnets (32, 33). The present invention makes it possible to commercially produce the perpendicular magnetic recording medium, especially in the tape form.

公开(公告)号：US06445675B1

公开(公告)日：2002-09-03

申请号：US09678835

申请日：2000-10-04

申请人： Atsushi Ebina ,  Takashi Tomie ,  Toru Horiguchi

发明人： Atsushi Ebina ,  Takashi Tomie ,  Toru Horiguchi

IPC分类号： G11B724

CPC分类号： G11B7/243 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/24 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/257 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/26 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/2432 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716 ,  Y10T428/21

摘要： In a phase change optical recording medium in which writing, reading and/or erasing of information is conducted by utilizing change of phase of a recording layer by irradiation with light, the recording layer is made of a material containing oxygen in an amount of 1 to 30 atomic %; or the recording medium comprises an additional transparent dielectric layer 1 to 10 nm thick between the recording layer and the underlying transparent dielectric layer and the inserted transparent dielectric layer in contact with the recording layer comprising oxygen in a molar ratio greater than a molar ratio of oxygen in the underlying transparent dielectric layer; or the transparent dielectric layer underlying and in contact with the recording layer comprises oxygen in a molar ratio greater than a molar ratio of oxygen in the other transparent dielectric layer.

摘要翻译： 在通过利用光照射记录层的相位改变进行信息的写入，读取和/或擦除的相变光学记录介质中，记录层由含氧量为1〜 30原子％ 或者记录介质包括在记录层和下面的透明介电层之间1至10nm厚的附加透明介电层，并且插入的透明介电层与包含氧的记录层接触，摩尔比大于氧的摩尔比 在底层的透明介电层中; 或在记录层下面和与记录层接触的透明介电层包括摩尔比大于另一透明介电层中的氧摩尔比的氧。

公开(公告)号：US07187644B2

公开(公告)日：2007-03-06

申请号：US10490940

申请日：2002-09-19

申请人： Kazutomi Suzuki ,  Takashi Tomie ,  Kiyoto Takizawa ,  Suinobu Kubota

发明人： Kazutomi Suzuki ,  Takashi Tomie ,  Kiyoto Takizawa ,  Suinobu Kubota

IPC分类号： G11B3/70 ,  G11B7/24 ,  B32B3/02

CPC分类号： B29D17/005 ,  B29C43/021 ,  B29C43/3642 ,  B29C47/00 ,  B29C47/0004 ,  B29C47/0021 ,  B29C2043/025 ,  B29C2043/3655 ,  B29C2043/3689 ,  B29K2069/00 ,  B29K2105/256 ,  G11B7/26 ,  G11B7/263

摘要： A method of manufacturing an optical recording substrate, comprising the steps of: contacting the surface having pit or land/grooves of a stamper having the pit or land/grooves to an organic polymer sheet having a glass transition temperature of 120 to 190° C., a single-pass birefringence retardation of +10 nm to −10 nm and a thickness of 0.35 mm or less under reduced pressure; and thermally pressing them. According to this method, an optical recording substrate which can transfer a stamper pattern to a thin organic polymer sheet easily and thoroughly can be manufactured.

摘要翻译： 一种制造光学记录基板的方法，包括以下步骤：将具有凹坑或平台/凹槽的压模的凹坑或凹槽/凹槽的表面接触到玻璃化转变温度为120至190℃的有机聚合物片材。 ，减压下的+ 10nm〜-10nm的单程双折射延迟和0.35mm以下的厚度。 并热压它们。 根据该方法，可以制造能够容易且彻底地将压模图案转印到有机聚合物薄片的光学记录基板。

公开(公告)号：US06251492B1

公开(公告)日：2001-06-26

申请号：US09266773

申请日：1999-03-12

申请人： Takashi Tomie

发明人： Takashi Tomie

IPC分类号： B32B302

CPC分类号： G11B7/252 ,  G11B7/2534 ,  G11B7/2585 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25713 ,  G11B2007/25715 ,  G11B2007/25716 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/21 ,  Y10T428/31678

摘要： An optical recording medium comprising, in the following order, a substrate, a reflecting layer, a lower dielectric layer, an optical recording layer, the optical recording layer recording information by means of change in a physical property of the optical recording layer which is generated by an applied light beam, the change in a physical property of the optical recording layer being conducted at an operating temperature, and an upper dielectric layer, wherein the substrate has a thermal deformation temperature lower than the operating temperature and the optical recording medium further comprises a thermally insulating layer between the substrate and the reflecting layer.

摘要翻译： 一种光学记录介质，按照以下顺序包括基板，反射层，下介电层，光记录层，光记录层通过产生的光记录层的物理性质的变化记录信息 通过施加的光束，光学记录层的物理性能在工作温度下导致的变化，以及上部介电层，其中基板具有低于工作温度的热变形温度，并且光学记录介质还包括 在基板和反射层之间的隔热层。

公开(公告)号：US6141315A

公开(公告)日：2000-10-31

申请号：US64611

申请日：1998-04-23

申请人： Atsushi Ebina ,  Takashi Tomie ,  Toru Horiguchi

发明人： Atsushi Ebina ,  Takashi Tomie ,  Toru Horiguchi

IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/24 ,  G11B7/243 ,  G11B7/253 ,  G11B7/2534 ,  G11B7/254 ,  G11B7/2542 ,  G11B7/257 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/26

CPC分类号： G11B7/243 ,  G11B7/24 ,  G11B7/257 ,  G11B7/26 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/2432 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/258 ,  G11B7/2585 ,  Y10T428/21

摘要： In a phase change optical recording medium in which writing, reading and/or erasing of information is conducted by utilizing change of phase of a recording layer by irradiation with light, the recording layer is made of a material containing oxygen in an amount of 1 to 30 atomic %; or the recording medium comprises an additional transparent dielectric layer 1 to 10 nm thick between the recording layer and the underlying transparent dielectric layer and the inserted transparent dielectric layer in contact with the recording layer comprising oxygen in a molar ratio greater than a molar ratio of oxygen in the underlying transparent dielectric layer; or the transparent dielectric layer underlying and in contact with the recording layer comprises oxygen in a molar ratio greater than a molar ratio of oxygen in the other transparent dielectric layer.

摘要翻译： 在通过利用光照射记录层的相位改变进行信息的写入，读取和/或擦除的相变光学记录介质中，记录层由含氧量为1〜 30原子％ 或者记录介质包括在记录层和下面的透明介电层之间1至10nm厚的附加透明介电层，并且插入的透明介电层与包含氧的记录层接触，摩尔比大于氧的摩尔比 在底层的透明介电层中; 或在记录层下面和与记录层接触的透明介电层包括摩尔比大于另一透明介电层中的氧摩尔比的氧。

公开(公告)号：US5093174A

公开(公告)日：1992-03-03

申请号：US528981

申请日：1990-05-25

申请人： Kazutomi Suzuki ,  Takashi Tomie ,  Kiyoshi Chiba ,  Tadanori Nakatani ,  Kimio Kinoshita

发明人： Kazutomi Suzuki ,  Takashi Tomie ,  Kiyoshi Chiba ,  Tadanori Nakatani ,  Kimio Kinoshita

IPC分类号： G11B7/243 ,  G11B7/253 ,  G11B7/2534 ,  G11B7/258 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595 ,  G11B11/105

CPC分类号： G11B11/10586 ,  G11B7/258 ,  G11B2007/24306 ,  G11B7/2534 ,  G11B7/2585 ,  G11B7/259 ,  G11B7/2595 ,  Y10S428/913 ,  Y10S430/146 ,  Y10T428/31678

摘要： A metal reflecting layer of an aluminum or silver alloy containing gold has a lower thermal conductivity than aluminum or silver and gold while maintaining a high reflectivity, and thus an optical recording medium, particularly a magneto-optical recording medium, having a high recording sensitivity and a C/N ratio, as well as an improved durability, can be provided. The content of Au in the Al alloy is 0.5-20 at % and that in the silver alloy is 0.5-30 at %. Preferably, at least one of the group consisting of titanium, tantalum, zirconium and yittrium is added to an alloy of Al or Ag with Au, and the content of at least one of the group consisting of titanium, tantalum, zirconium and yittrium is preferably 0.3-5.0 at % in an Al-Au alloy and 0.3-12.0 at % in an Ag-Au alloy. More preferably, the total content of Au and at least one of the group consisting of titanium, tantalum, zirconium and yittrium is 1.0-15 at %.