Naphthalocyanine chromophores for WORM-type optical data storage media
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Hoechst Celanese's proprietary naphthalocyanine record-ing layer materials exhibit excellent performance for a write-once read many (WORM) optical data storage media. This pit-forming medium shows a CNR greater than 50 dB and a bit error rate less than 1 x 10 for data recorded at either 780 or 830 nm. The stability under accelerated aging conditions is superior to that for coririercial media.
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