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Proceedings Paper

Photopolymerization And The Reversibility Of Phase-Changing Erasable Optical Disks
Author(s): Akira Iwasawa; Hiroki Yamazaki; Susumu Fujimori; Nobuhiro Funakoshi
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Paper Abstract

Hermetically-sealed media are needed to suppress thermal deformation whidh occurs during the writing and reading process in erasable optical disks. The photopolymerization process ( 2P process ) is therefore examined for application to the stamping and sealing process. The replicability of grooves in the stamping process is studied by Fourier analysis position signal for the focused beam. Distortions in grooves replicated from a pregrooved stamper are seen to depend on the shape of the plastic substrate used in the 2P process. Various photopolymerizable adhesives have been tried to create hermetically-sealed media in the sealing process. Examination of media read/write performance shows that the hardness of the adhesive plays a key role in preventing thermal deformation during the write process.

Paper Details

Date Published: 14 January 1987
PDF: 5 pages
Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936821
Show Author Affiliations
Akira Iwasawa, NTT Electrical Communication Laboratories (Japan)
Hiroki Yamazaki, NTT Electrical Communication Laboratories (Japan)
Susumu Fujimori, NTT Electrical Communication Laboratories (Japan)
Nobuhiro Funakoshi, NTT Electrical Communication Laboratories (Japan)

Published in SPIE Proceedings Vol. 0695:
Optical Mass Data Storage II
Robert P. Freese; Albert A. Jamberdino; Maarten R. de Haan, Editor(s)

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