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/697。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/697
图样
基础信息
- 类型
- 专利
- 申请号
P/697- 状态
- 已注册
- 申请人
- HOYA CORPORATION
- 代理机构
- Tilleke & Gibbins Lao Co.,Ltd
- 申请日期
- 2018-10-01
- 注册号
P/697- 公开/公告日
- 2023-06-09
- 注册/授权日
- 2023-06-09
- 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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形式审查
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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
The purpose of the present invention is to prevent adhesion between a magnetic disc and a spacer when removing the magnetic disc and the spacer from a hard disc drive device where the magnetic disc and the spacer are installed. The surface roughness Ra on the principal surface of the ring-shaped glass spacer in contact with the magnetic disc in the hard disc drive device is set to 1.0 µm or less and the average inclination R∆a of the principal surface is set to 0.02 or greater.
The purpose of the present invention is to prevent adhesion between a magnetic disc and a spacer when removing the magnetic disc and the spacer from a hard disc drive device where the magnetic disc and the spacer are installed. The surface roughness Ra on the principal surface of the ring-shaped glass spacer in contact with the magnetic disc in the hard disc drive device is set to 1.0 µm or less and the average inclination R∆a of the principal surface is set to 0.02 or greater.