| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the influence of emission of light for displaying an image formed on some of a plurality of display boards, exerted on an image formed on the other display boards. <P>SOLUTION: An ultraviolet ray emitted from a first light source 25 reaches the surface 20A of a first plate body 20 or ink particles 21 to 23, and accordingly, the ink particles 21 to 23 emit light beams of R, G and B, and an image Ma appears as a colored image on the surface 20A. The ultraviolet ray having reached a part where no ink particles 21 to 23 is printed is absorbed by the first plate body 20 low in ultraviolet ray transmittance. The ultraviolet ray emitted to the first plate body 20 does not reach ink particles 31 to 33 and 36 to 37 of a second plate body 30. Even when visible light beams of R, G and B emitted by the emitting ink particles 21 to 23 reach, the ink particles 31 to 33 and 36 to 37 of the second plate body 30 do not emit light. Images Mb1 and Mb2 formed on the surface 30A of the second plate body 30 are kept substantially transparent. <P>COPYRIGHT: (C)2010,JPO&INPIT |
