Self-leveling stamper module
US6758664B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Apr 6, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/81
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a disk replicating assembly, a blank disk is attached to one platen and a stamper is attached to the other platen. Pressure is applied so that the two platens are forced together, thereby transferring features from the stamper to the disk. A ball joint is located between a platen and the pressure train of the replicating assembly. Due to the ball joint at this location, the resulting pressure gradient when the stamper and disk are pressed together causes the one platen to swivel such that it orients itself substantially parallel to the other platen. Because the resistance of the ball joint is selected so that the one platen is able to pivot before the stamper significantly affects the disk, the fine features of the stamper are not transferred to the disk until the platens are in parallel alignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.