公开(公告)号：US09147422B2

公开(公告)日：2015-09-29

申请号：US14217637

申请日：2014-03-18

Applicant: SHOWA DENKO K.K.

Inventor： Takehiko Okabe ,  Katsuaki To

IPC: G11B5/84 ,  G11B5/85

CPC classification number: G11B5/8408 ,  G11B5/85

Abstract: A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant on the stacked body after depositing the first lubricant, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere. The first lubricant has a lower molecular mass and a higher chemical polarity than those of the second lubricant.

Abstract translation: 通过在层叠体上依次形成磁记录层，保护层和润滑层来制造磁记录介质的方法包括：在形成保护层之后，通过蒸镀形成保护层，在第一润滑剂上形成润滑剂 在不将层叠体暴露在大气中的同时润滑沉积，以及在沉积第一种润滑剂之后，通过气相润滑沉积而在层叠体上沉积第二种润滑剂，而不将堆叠体暴露在大气中。 第一润滑剂具有比第二润滑剂低的分子量和更高的化学极性。

公开(公告)号：US09159354B2

公开(公告)日：2015-10-13

申请号：US14154244

申请日：2014-01-14

Applicant: SHOWA DENKO K.K.

Inventor： Takehiko Okabe ,  Katsuaki To

IPC: G11B5/84

CPC classification number: G11B5/8408

Abstract: A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant that is dissolved in an organic solvent onto the stacked body after depositing the first lubricant.

Abstract translation: 通过在层叠体上依次形成磁记录层，保护层和润滑层来制造磁记录介质的方法包括：在形成保护层之后，通过蒸镀形成保护层，在第一润滑剂上形成润滑剂 在不使层叠体暴露于大气的同时润滑沉积，以及在沉积第一润滑剂之后将溶解在有机溶剂中的第二润滑剂沉积到层叠体上。

公开(公告)号：US09449634B2

公开(公告)日：2016-09-20

申请号：US14810611

申请日：2015-07-28

Applicant: SHOWA DENKO K.K.

Inventor： Takehiko Okabe ,  Katsuaki To

IPC: G11B5/84 ,  G11B5/85

CPC classification number: G11B5/8408 ,  G11B5/85

Abstract: A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant on the stacked body after depositing the first lubricant, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere. The first lubricant has a lower molecular mass and a higher chemical polarity than those of the second lubricant.

公开(公告)号：US20140079877A1

公开(公告)日：2014-03-20

申请号：US14017387

申请日：2013-09-04

Applicant: SHOWA DENKO K.K.

Inventor： Yasuyuki Tsutatani ,  Daisuke Shiomi ,  Satoru Ueno ,  Ichiro Ota ,  Takehiko Okabe

IPC: G11B5/85

CPC classification number: G11B5/85 ,  C23C14/564 ,  G11B5/8408

Abstract: A method of fabricating a magnetic recording medium sequentially forms a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body. The lubricant layer is formed by vapor-phase lubrication without exposing the stacked body to atmosphere after forming the protection layer on the stacked body. A region having a gas pressure P3 is provided in a transport path of the stacked body after the formation of the protection layer and before the formation of the lubricant layer, satisfying relationships P3>P1 and P3>P2, where P1 denotes a process gas pressure at a time of forming the protection layer, and P2 denotes a process gas pressure at a time of forming the lubricant layer.

Abstract translation: 制造磁记录介质的方法在层叠体上依次形成磁记录层，保护层和润滑层。 通过气相润滑形成润滑剂层，而不在层叠体上形成保护层后将层叠体暴露在大气中。 具有气体压力P3的区域在形成保护层之后并在形成润滑剂层之前设置在堆叠体的输送路径中，满足关系P3> P1和P3> P2，其中P1表示处理气体压力 在形成保护层时，P2表示形成润滑剂层时的工艺气体压力。

公开(公告)号：US09177587B2

公开(公告)日：2015-11-03

申请号：US14148931

申请日：2014-01-07

Applicant: SHOWA DENKO K.K.

Inventor： Takehiko Okabe ,  Katsuaki To

IPC: G11B5/84

CPC classification number: G11B5/8408

Abstract: A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant on the stacked body after depositing the first lubricant, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere.

Abstract translation: 通过在层叠体上依次形成磁记录层，保护层和润滑层来制造磁记录介质的方法包括：在形成保护层之后，通过蒸镀形成保护层，在第一润滑剂上形成润滑剂 在不将层叠体暴露在大气中的同时润滑沉积，以及在沉积第一种润滑剂之后，通过气相润滑沉积而在层叠体上沉积第二种润滑剂，而不将堆叠体暴露在大气中。