| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a light guide plate with deterioration of resin due to ultraviolet irradiation restrained, in a resin-made one having reflection dots formed by dot printing of ultraviolet-cured ink. <P>SOLUTION: The manufacturing method, of the light guide plate 11 provided with a light guide plate material part 12 containing resin equipped with an emission surface 12b emitting light and a rear face 12c opposite to the emission surface 12b, and reflection dots 24 fitted to a rear face 12c side of the light guide plate material part 12 for reflecting light toward an emission surface 12b side, includes a step of forming ink dots 24A by applying dot printing on the rear face 12c with ultraviolet-cured ink, and a step of forming the reflection dots 24 by applying ultraviolet rays from an ultraviolet lamp 52 on the ink dots 24A to cure the same. The ultraviolet rays have a ratio of ultraviolet intensity at a wavelength of 200 to 280 nm to that at a wavelength of 200 to 380 nm of ≤8%. <P>COPYRIGHT: (C)2013,JPO&INPIT |
