Roll-shaped mold for information recording medium
US5575961A · kind A · utility
31Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1995 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Jun 5, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D17/007
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A roll-shaped mold for forming an information recording medium has a pattern forming layer formed into a film on a roll-shaped mold substrate and having a pattern for formation of a groove for a track on a resin substrate for the information recording medium by heat molding on the circumferential wall of the pattern forming layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.