Process of making magnetic recording disk
US6432346B1 · kind B1 · utility
12Cited by
13References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 3, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | May 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2043/561
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing magnetic recording disks includes positioning the disks between flat plates and increasing the temperature and pressure on the disks. Servo tracks are embossed on the disks by an embossing pattern on the flat plate. Servo tracks may be applied by a printing pattern on the flat plates. The flat plates are rotated during the process to relieve directional differences in the modulus of elasticity of the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.