Optical disc and apparatus for manufacturing a master disc...

Details Optical disc and apparatus for manufacturing a master disc... Optical disc and apparatus for manufacturing a master disc...

2006-06-20

2006-06-20

Neyzari, Ali (Department: 2656)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S277000, C428S064400

Reexamination Certificate

active

07065034

ABSTRACT:
A master-disc-manufacturing apparatus includes an electron-beam emitting portion for emitting an electron beam, an electron-beam converging portion for converging an electron beam, a retarding voltage applying portion for applying a substrate with a negative potential having a magnitude of decelerating the electron beam, and a vacuum atmosphere producing portion for evacuating a chamber to produce a vacuum atmosphere therein.

REFERENCES:
patent: 5943313 (1999-08-01), Ando et al.
patent: 6071588 (2000-06-01), Nobumasa et al.
patent: 6181672 (2001-01-01), Muramatsu et al.
patent: 6379864 (2002-04-01), Inui et al.
patent: 6771587 (2004-08-01), Nishiuchi et al.

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