Optical information recording medium and optical recording...

Details Optical information recording medium and optical recording... Optical information recording medium and optical recording...

2006-02-07

2006-02-07

Edun, Muhammad (Department: 2655)

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

C369S275200, C369S013350, C369S013410, C369S047100

Reexamination Certificate

active

06996052

ABSTRACT:
An optical information recording medium for recording information by a plurality of record mark lengths, wherein the shortest mark length is at most 0.5 μm, and a crystal state is an unrecorded or erased state and an amorphous state is a recorded state, wherein the erasing is carried out by recrystallization which substantially proceeds by crystal growth from an interface between the amorphous portion or a melt portion and a peripheral crystal portion; and an optical recording method suitable therefore. The medium of the present invention has characteristics that overwriting can be made at a high speed, the jitter of mark edge is small, mark length modulation recording can be made at a high density, and the formed mark is excellent in the stability with the lapse of time.

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