| 摘要 |
PURPOSE:To improve a recording sensibility, by providing a substrate, a reflection layer, a plurality of recording layers, an underlying layer and a spacer layer, and employing a built-up film formed of organic coloring matter and filming substance through Langmuir-Blodgett's method in the recording layers such that the organic coloring matter has an absorption peak in different wavelength region. CONSTITUTION:A substrate is made of glass while a reflection layer is made of Al. Organic coloring matter includes cyanin coloring matter shown by formula I or II, for example, and an undercoat layer and a spacer layer are omega- tricosane layers built up through LB method. Filming material includes a mixture of dioctadecyl dimethyl ammonium chloride and methyl stearate, and arachic acid. The reflection layer and the undercoat layer are provided sequentially on the substrate and a plurality of recording layers are laminated through spacers on the undercoat layer. Since the recording layers are not simply laminated but an undercoat layer and a spacer layer are further provided, the recording sensibility can be improved. |
