Optical recording medium and method of producing the same

Details Optical recording medium and method of producing the same Optical recording medium and method of producing the same

2011-06-21

2011-06-21

Angebranndt, Martin J (Department: 1722)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

C430S325000

Reexamination Certificate

active

07964337

ABSTRACT:
An optical recording medium wherein characters can be easily recognized on an optical disk irradiated with a light through a light transmitting layer and a method of producing the same are provided. In an optical disk of a type that an optical recording layer is irradiated with a light through a light transmitting protective layer, dealing with a larger capacity, wherein one main surface of a medium substrate15is divided to a signal portion SG and a character portion CA, a signal portion uneven shape (15p) is formed on the signal portion SG and a character portion uneven shape (15p) is formed on the character portion CA, and depths of the signal portion uneven shape and the character portion uneven shape are 25 nm or less. Here, it is configured that characters are recorded to be able to be read as normal characters when looking from the medium substrate15side (Y-direction) by outlines of a region formed with the character portion uneven shape on the character portion CA.

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Machine translation of JP 11-224442.

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