Optical information medium

摘要

An optical information medium having an ink-accepting layer that may secure a high-gloss printed surface similar to print image quality of print image on photographic paper is provided. The optical disk 1 is constituted by sequentially laminating concave-convex information pits 3, a recording layer 4, a reflective layer 5, a protective layer 6, a second printing layer 7, and an ink-accepting layer 8 on a transparent substrate 2 made of synthetic resin such as polycarbonate. In formation of the above described ink-accepting layer 8, A. Urethane acrylate: 5 to 15 B. Water-soluble monomer: 70 to 80 C. Water-soluble monomer soluble resin: 5 to 15 D. Photopolymerization initiator: 5 to 15 E. Dyestuff fixing agent: 5 to 15 F. Silica: <5 were milled to prepare an ink for printing (unit; percent by weight).