Glass Spacer and Hard Disc Drive Device
专利「Glass Spacer and Hard Disc Drive Device」由 HOYA CORPORATION 持有，当前状态为已注册，申请号 P/839。LaoBiz 老商通提供老挝知识产权信息检索与企业关联查询。
Patent “Glass Spacer and Hard Disc Drive Device” is held by HOYA CORPORATION; status: 已注册. Search Laos IP records on LaoBiz.
P/839
图样
基础信息
- 类型
- 专利
- 申请号
P/839- 状态
- 已注册
- 申请人
- HOYA CORPORATION
- 代理机构
- Tilleke & Gibbins International Ltd
- 申请日期
- 2018-10-01
- 注册号
P/839- 公开/公告日
- 2024-11-22
- 注册/授权日
- 2024-11-18
- 届满日
- 2038-10-01
- 国际分类
- G11B 17/038 · G11B 23/00 · G11B 25/04 · G11B 5/65
- 商品 / 服务
- —
办理流程
根据当前状态动态标注-
提交申请
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实质审查
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公开
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授权
关联分析
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摘要
In order to suppress the occurrence of adhesion between magnetic disks and spacers when the
magnetic disks and the spacers are removed from a hard disk drive apparatus in which the
magnetic disks and the spacers are installed, a surface roughness Ra of a main surface of a ring-shaped glass spacer to be arranged in contact with a magnetic disk is set to be not larger than 1.0
pm, and an average inclination RAa of the main surface is set to be at least 0.02.
In order to suppress the occurrence of adhesion between magnetic disks and spacers when the
magnetic disks and the spacers are removed from a hard disk drive apparatus in which the
magnetic disks and the spacers are installed, a surface roughness Ra of a main surface of a ring-shaped glass spacer to be arranged in contact with a magnetic disk is set to be not larger than 1.0
pm, and an average inclination RAa of the main surface is set to be at least 0.02.