| 摘要 |
PURPOSE:To absorb the light past a recording member an adhesive layer and to decrease noise by mixing a coloring agent which absorbs light with the adhesive layer to be adhered for the purpose of preventing reflection. CONSTITUTION:Carbon black is added at 0.5wt% to an epoxy resin and such resin is used as an adhesive agent for forming an adhesive layer 4. The adhesive layer is formed to 100mum film thickness by a spincoater on a recording member 2' and another recording member 2 is adhered thereonto. The laser light past the recording medium is absorbed by the layer 4 and is not reflected and therefore the noise of the reproduction signal is decreased. |
