发明名称 |
Phase-change recording element for write once applications |
摘要 |
A WORM optical recording element includes a substrate; an amorphous phase-change recording layer disposed over the substrate; a dielectric layer disposed adjacent to the amorphous phase-change layer; a reflector layer disposed adjacent to the dielectric layer; and wherein the material and the thickness of the layers are selected such that recording can be performed on the optical recording element by using a focused laser beam to form crystalline marks in the phase-change layer using laser pulses with less than 40 nS in duration, the reflectivity of the amorphous phase as measured by a collimated beam is higher than 28% and the contrast of the read-back signal is higher than 0.6, and the second and subsequent writing over previous recording results in at least a 50% increase in read out jitter.
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申请公布号 |
US6497988(B2) |
申请公布日期 |
2002.12.24 |
申请号 |
US20010791322 |
申请日期 |
2001.02.22 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
TYAN YUAN-SHENG;CUSHMAN THOMAS R.;FARRUGGIA GIUSEPPE;OLIN GEORGE R.;PRIMERANO BRUNO;VAZAN FRIDRICH;BARNARD JAMES A. |
分类号 |
B41M5/26;G11B7/0045;G11B7/006;G11B7/24;G11B7/243;(IPC1-7):G11B7/004 |
主分类号 |
B41M5/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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