发明名称 |
Method of manufacturing dies for pressing optical disks |
摘要 |
An optical disk die is manufacture from a laminated disk which includes a substrate, an overlying heat sensitive layer, a reflective layer, and a final output protective layer. A laser beam forms micro-pits in the heat sensitive layer. These micro-pits become exposed after removal of the protective and reflective layers. A thin metallic coating is deposited over the surface of the pitted heat sensitive layer wherein the contours of the micro-pits are followed. A thicker second metallic layer is deposited over the first metallic layer and has an interface with the first metallic layer which duplicates a pattern of the micro-pits. Finally, the deposited second layer is separated from the remainder of the laminated disk thereby forming a die having the micro-pit pattern therein.
|
申请公布号 |
US5312718(A) |
申请公布日期 |
1994.05.17 |
申请号 |
US19930005289 |
申请日期 |
1993.01.19 |
申请人 |
DIGIPRESS |
发明人 |
LEDIEU, JEAN;DUFRESNE, JEAN-FRANCOIS |
分类号 |
G11B7/24;G11B7/26;(IPC1-7):C25D1/10 |
主分类号 |
G11B7/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|