| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a filler for filling the gap between a recording material layer and an adjacent base material of a hologram recording medium capable of adjusting the refractive index without adversely affecting the recording property. <P>SOLUTION: The hologram recording medium 20 includes a supporting base material 10, a hologram recording material layer 12, a transparent gel layer 14, and a protective base material 16. The transparent gel layer 14 is composed of a resin material gelled by a cross-linking reaction, specifically, silicone gel cross-linked by a hydrosilylation reaction, polyurethane gel cross-linked by a polyaddition reaction of isocyanic acid ester and alcohol, etc., and is used as a filler for compensating thickness variations of the hologram recording material layer 12. <P>COPYRIGHT: (C)2009,JPO&INPIT |
