Minute structure and information recording medium
US-9165590-B2 · Oct 20, 2015 · US
Optical information recording medium
US8980396B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8980396-B2 |
| Application number | US-201314036253-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 25, 2013 |
| Priority date | Mar 25, 2011 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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An optical information recording medium 10 includes a plurality of recording layers 14 , and intermediate layers 15 each provided between the recording layers 14 . The optical information recording medium 10 is configured such that first and second intermediate layers 15 A, 15 B having different refractive indices are arranged alternately with one recording layer 14 interposed therebetween, that ((n3−n1)/(n3+n1)) 2 ≦0.001 is satisfied, where n1 represents a refractive index of the recording layer 14 , and n3 represents a refractive index of the second intermediate layer 15 B, and that when a recording layer 14 is irradiated with a recording beam RB and generates heat by absorption of the recording beam RB, an interface (reflection interface 18 A) between the recording layer 14 and the first intermediate layer 15 A adjacent to this recording layer 14 undergoes a change of shape to record information (recording spot M).
First claim
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What is claimed is: 1. An optical information recording medium comprising: a plurality of recording layers; and intermediate layers each provided between the recording layers, wherein first and second intermediate layers having different refractive indices are arranged alternately with one recording layer interposed therebetween, wherein ((n3−n1)/(n3+n1)) 2 ≦0.001 is satisfied, where n1 represents a refractive index of the recording layer, and n3 represents a refra…
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- G11B7/00452Primary
Physics · mapped topic
Physics · mapped topic
- G11B7/24041Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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- What does patent US8980396B2 cover?
- An optical information recording medium 10 includes a plurality of recording layers 14 , and intermediate layers 15 each provided between the recording layers 14 . The optical information recording medium 10 is configured such that first and second intermediate layers 15 A, 15 B having different refractive indices are arranged alternately with one recording layer 14 interposed there…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification G11B7/00452. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Mar 17 2015 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).