Method for assembling a disc-shaped recording medium
US5709764A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1995 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Aug 23, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1744
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for assembling a hub for magnetically chucking an optical disc on a disc table of a recording/reproducing apparatus under a force of magnetic attraction includes an assembly guide member having a first guide portion movable in a direction perpendicular to one major surface of the disc substrate so as to be engaged in a center opening in the disc substrate, and a second guide portion formed integrally with the first guide portion so that its center axis is aligned with the distal end of the first guide portion. The second guide portion is fitted in a spindle shaft opening in the hub. The assembly guide member its first guide portion fitted in the center opening for positioning the disc substrate and the second guide portion being engaged in this state in the spindle shaft opening for centering the disc substrate with respect to the hub. The disc substrate and the hub may be assembled together in the correctly centered state via the assembly guide member by a simplified operation with minimum cost, thus assuring reduction in investment cost and improved productivity. In addition, the centering between the disc substrate and the hub, which usually required time-…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.