Roll stamper for molding substrate used for optical recording medium
US5310333A · kind A · utility
10Cited by
13References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1991 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Jun 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A roll stamper has a roll substrate and a stamper fixed thereto and having a convexity and concavity preformat pattern. The stamper has an auxiliary layer, including a material different from that of the stamper and a back surface on which the convexity and concavity preformat pattern is formed. The roll substrate has a low-melting layer on its surface and the auxiliary layer is in contact with the low-melting layer so that the stamper is fixed to the roll substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.