Photopolymerization And The Reversibility Of Phase-Changing Erasable Optical Disks

Akira Iwasawa; Hiroki Yamazaki; Susumu Fujimori; Nobuhiro Funakoshi

doi:10.1117/12.936821

14 January 1987 Photopolymerization And The Reversibility Of Phase-Changing Erasable Optical Disks

Akira Iwasawa, Hiroki Yamazaki, Susumu Fujimori, Nobuhiro Funakoshi

Proceedings Volume 0695, Optical Mass Data Storage II; (1987) https://doi.org/10.1117/12.936821
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

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.

Citation Download Citation

Akira Iwasawa, Hiroki Yamazaki, Susumu Fujimori, and Nobuhiro Funakoshi "Photopolymerization And The Reversibility Of Phase-Changing Erasable Optical Disks", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); https://doi.org/10.1117/12.936821

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