发明名称 |
Organic-optic recording tapes |
摘要 |
An organic-optic recording tape of higher capacity and higher packing density of data. This tape comprises a backcoating layer, a base film coated on the backcoating layer, and a complex functional layer for writing, reading and erasing data. The complex functional layer is coated on the base film and selectively focused by laser beams of different powers outputted from a laser diode in order to write, read or erase data. This complex functional layer is made of a block polymer prepared by blending a thermoplastic elastomer and a viscoelastic transparent thermoplastic high-molecular resin or polymerizing them. Near infrared absorbing organic colorants are dispersed in the complex functional layer. The transparent thermoplastic resin has a glass transition temperature higher than that of the elastomer. The recording is effected by employing a laser beam of lower power capable of inducing thermal expansion of the elastomer and formation of a bump. The erasing is effected by employing a laser beam of higher power capable of inducing viscousness of the resin. The reading is effected by employing a laser beam of very lower power capable of causing reflectivity difference between the bump and the normal part of the complex function layer.
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申请公布号 |
US5508087(A) |
申请公布日期 |
1996.04.16 |
申请号 |
US19940249697 |
申请日期 |
1994.05.26 |
申请人 |
CHEIL SYNTHETICS INC. |
发明人 |
MIN, KYUNG S.;KIM, GEON Y.;CHO, OK K. |
分类号 |
B41M5/26;G11B7/00;G11B7/003;G11B7/0055;G11B7/24;G11B7/244;(IPC1-7):B32B9/00 |
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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