KR960008707A - Erasable organic optical recording medium and manufacturing method thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erasable glass optical recording medium in which a substrate layer, a composite functional gun, and a reflective layer are sequentially stacked to store, reproduce, and erase data. The composite functional layer is an adhesive polymer resin and a uniformly dispersed hollow type. Microcapsules and pigments capable of absorbing the laser for recording, allowing for volume expansion and contraction of the copolymer due to laser irradiation using the space (void volume) present inside the microcapsules. Therefore, it becomes a recording layer and an erasing layer having a shape memory capability, and also it is possible to uniformly control the size of the void volume in the microcapsule, the size of the microcapsule itself, which is a void formed in the microcapsule at the time of recording Since the resin expands in the volume direction, it does not cause surface morphological changes, so that the reliability of recorded information Stability can be improved.

Description

Erasable organic optical recording medium and manufacturing method thereof

Since this is an open matter, no full text was included.

2 is a longitudinal sectional view of the organic optical recording medium of the present invention.

3 is an enlarged longitudinal sectional view of the composite functional layer of the present invention.

Claims (6)

In an erasable organic optical recording medium in which a substrate layer, a composite functional layer, and a reflective layer are sequentially stacked, the composite functional layer is formed of an adhesive polymer resin and a void volume therein to simultaneously perform the functions of recording and erasing. Erasable organic light recording, comprising microcapsules and dyes capable of absorbing the recording laser, and recording, erasing, and reproducing can be performed on the same layer by adjusting and irradiating the laser output. media. The erasable organic optical recording medium as claimed in claim 1, wherein the resin for preparing the microcapsules is made of a block copolymer obtained by copolymerizing a thermoplastic elastomer and a viscoelastic transparent thermoplastic polymer resin. The erasable organic optical recording medium as claimed in claim 1 or 2, wherein the microcapsules are formed in a size of 0.1-0.8 mu m and are uniformly dispersed in the composite functional layer with a narrow particle size distribution. The erasable organic optical recording medium as claimed in claim 1, wherein the dye content is 5-20 wt% of the composite functional layer resin. The erasable organic optical recording medium as claimed in claim 1, wherein the single laser is a laser diode having the same wavelength. The method of claim 1, wherein the composite functional layer comprises a microcapsule formed by dissolving a copolymer resin and a pigment of a thermoplastic elastomer and a transparent thermoplastic polymer resin in an organic solvent and then mixing the mixture with water. After freeze-drying, a composite functional layer formed by dispersing the microcapsules in an alcohol solution of an adhesive polymer resin is laminated. ※ Note: The disclosure is based on the initial application.