Method of recording information and information recording medium

Details Method of recording information and information recording medium Method of recording information and information recording medium

1987-07-31

1989-08-22

McElheny, Jr., Donald

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369275, G11B 724, G11B 726

Patent

active

048602736

ABSTRACT:
A method of recording information comprising the steps of: irradiating a light-absorbing material (which is arranged in contact with a polymer blend which changes in its phase condition between a homogeneous state and a phase-separated state in response to change of its temperature across its cloud point) with a laser beam for causing the light-absorbing material to absorb energy of the beam and generate a heat, whereby elevating the temperature of the polymer blend near the light-absorbing material to a temperature of above the cloud point to change the phase condition of the polymer blend into a state which is different from the original state before the elevation of the temperature; and rapidly cooling the polymer blend to fix the polymer blend in its changed phase condition. An information recording medium preferably employed for the method is also disclosed.

REFERENCES:
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patent: 4325135 (1982-04-01), Dil et al.
patent: 4443870 (1984-04-01), Hazel et al.
patent: 4465767 (1984-08-01), Oba et al.
patent: 4519064 (1985-05-01), Takagi et al.
patent: 4722595 (1988-02-01), Siol
patent: 4757492 (1988-07-01), Fukushima et al.

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