| 摘要 |
PURPOSE:To obtain a long-time preservable recording medium with a high reproducibility by arranging a hydroquinone derivative or a phenol derivative into a layer in which fine metal particles are dispersed into an organic high molecular compound in optical information recording medium. CONSTITUTION:A hydroquinone derivative represented by the formula I (where, R<1> is C1-20 alkyl group, acyl group, aryl alkyl group or the like, R<2> hydrogen atom or the same as above and R<3> -SO3Na, halogen atom or the like) or a phenol substance represented by the formula II (where, R<5>, R<6> and R<7> are each hydrogen atom, amino group, alkyl group or the like) is added to a dispersion liquid in which a fine metal particle of Ag, Au, Pt and the like with the particle size of 20-500Angstrom obtained by reducing a solution of silver nitrate, gold chloride acid or the like is dispersed into a gelatin, hydrophilic organic solvent or the like with the content of 20-70wt% and the dispersion solution thus obtained is applied and dried on a support to obtain a recording layer. The recording layer may be subjected to a heat treatment or the like to improve the reflection property of the surface thereof. |
