Reverse optical mastering for data storage disk replicas

Details Reverse optical mastering for data storage disk replicas Reverse optical mastering for data storage disk replicas

2011-05-31

2011-05-31

Huber, Paul (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275100

Reexamination Certificate

active

07952986

ABSTRACT:
A data storage master disk and method of making a data storage master disk. The data storage disk master is for use in a data storage disk replication process. The data storage disk molding processes produces replica disks having a surface relief pattern with replica lands and replica grooves. The method includes providing a master substrate. The master substrate is at least partially covered with a layer of photosensitive material. A surface relief pattern having master lands and master grooves is recorded in the data storage disk master, including the steps of exposing and developing the photosensitive material is controlled to form master grooves extending down to a substrate interface between the master substrate and the layer of photosensitive material, such that the width of the master grooves at the substrate interface corresponds to a desired width of the replica lands.

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