Motor, hard disk drive device, blower, and method for manufacturing motor
US-2025070602-A1 · Feb 27, 2025 · US
Spindle motor
US12387749B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12387749-B2 |
| Application number | US-202418415795-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 18, 2024 |
| Priority date | Jan 27, 2023 |
| Publication date | Aug 12, 2025 |
| Grant date | Aug 12, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Provided are a base member for a heat-assisted magnetic recording disk drive apparatus, the base member including: a coating film coating at least a part of the base member, in which the coating film is an overbaked epoxy resin-containing electrodeposition coating film, a spindle motor including the base member, and a method for manufacturing the base member.
First claim
Opening claim text (preview).
The invention claimed is: 1. A base member for a heat-assisted magnetic recording disk drive apparatus, the base member comprising: a coating film coating at least a part of the base member, wherein the coating film is an epoxy resin-containing electrodeposition coating film overbaked, wherein the coating film contains a benzene ring-containing epoxy resin and a pigment containing an aluminum silicate component, and a value of a ratio x of peak intensities calculated using Equation (1) below is 0.8 or less in an absorption spectrum of the coating film obtained by Fourier transform infrared spectroscopy, x = I polymer / I pigment ( 1 ) (where I polymer represents a value of peak intensity at a wave number corresponding to absorbance derived from a benzene ring, and I pigment represents a value of peak intensity at a wave number corresponding to absorbance derived from a pigment containing an aluminum silicate component). 2. The base member for a heat-assisted magnetic recording disk drive apparatus, according to claim 1 , wherein the coating film has a pencil hardness of 5H or more. 3. The base member for a heat-assisted magnetic recording disk drive apparatus, according to claim 1 , wherein the coating film has a glossiness of 10 or less at an incident angle of 60°. 4. A spindle motor comprising: the base member according to claim 1 . 5. A heat-assisted magnetic recording disk drive apparatus comprising: the spindle motor according to claim 4 .
Assignees
Inventors
Classifications
Cases · CPC title
Polyepoxides · CPC title
Fabrication methods or processes specially adapted for a particular head structure, e.g. using base layers for electroplating, using functional layers for masking, using energy or particle beams for shaping the structure or modifying the properties of the basic layers · CPC title
Thermally assisted recording using an auxiliary energy source for heating the recording layer locally to assist the magnetization reversal · CPC title
- G11B5/3106Primary
where the integrated or assembled structure comprises means for conditioning against physical detrimental influence, e.g. wear, contamination (G11B5/3133 takes precedence) · CPC title
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- What does patent US12387749B2 cover?
- Provided are a base member for a heat-assisted magnetic recording disk drive apparatus, the base member including: a coating film coating at least a part of the base member, in which the coating film is an overbaked epoxy resin-containing electrodeposition coating film, a spindle motor including the base member, and a method for manufacturing the base member.
- Who is the assignee on this patent?
- Minebea Mitsumi Inc
- What technology area does this patent fall under?
- Primary CPC classification G11B5/3106. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Aug 12 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).