| 摘要 |
PURPOSE:To execute a visible information display without damaging an optical recording medium itself by providing a visible information recording layer to contain a coloring type thermosensible recording material to execute a recording with a recording light to an optical recording layer. CONSTITUTION:An optical recording layer 4 to execute a pit recording with a laser beam is provided on a groove surface for tracking of a transparent resin substrate 3 having a groove 7 for tracking, a plastic sheet coated with the coloring type thermosensible recording material is installed to a visible information display part 1 on the substrate 3, and the substrate 3 and a protecting substrate 6 are stuck together through an adhesive layer 5. When the visible information recording layer 1 of an optical card is irradiated with the recording light of the optical recording layer 4, the visible information recording layer 1 is discolored, and the visible information can be recorded and displayed without executing the work of an emboss, punching, etc., to the optical card itself. |
