Film layer separation device for multi-layer disks
AssigneeIndustrial Technology Research Institute
InventorsChau-Shin Jang, Li-Te Kuo, Rong-Chang Ma, Yu-Hsiu Chang
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Abstract
A film layer separation device for multilayer disks is disclosed. With the help of a stamper made of magnetic materials, the film layer separation is achieved through the attractive force imposed on the stamper by electromagnetic tearing. The device contains at least: a stamper supporter for supporting the stamper, an electromagnetic attraction device, and a base fixture. To distribute the electromagnetic force on the stamper evenly, the electromagnetic attraction device can have an array of homogeneously disposed electromagnetic iron cores and a conductive coil that can generate a magnetic force. Thus, there will be no localized stress when tearing.
Claims7
A film layer separation device for multi-layer disks used in the manufacturing process of making a data disk with a plurality of data layers for holding a magnetic stamper with a data film to separate the stamper from the disk after transferring the data film to the disk, the separation device comprising:
- a stamper supporter, which includes a supporting plane for fixing and supporting a top surface of the stamper;
- an electromagnetic attraction device, which is connected to the stamped supporter for generating an electromagnetic force perpendicular to the supporting plane to hold the stamper;
- and
- a base fixture, which supports the stamper supporter and the electromagnetic attraction device and pushes/draws the stamper supporter and the electromagnetic attraction device close to/away from the disk;
- the electromagnetic attraction device comprising:
- at lease one conductive coil, which generates an electromagnetic force when an electrical current is imposed;
- at least one magnetic iron core, which is surrounded by the conductive coil to enhance the electromagnetic force generated by the conductive coil;
- a bottom plate, which supports the magnetic iron core;
- and
- a magnetic housing, which covers the conductive coil and is connected to the boundary of the bottom plate and whose top surface supports the stamper supporter.
Dependencies are inferred from the claim text.