| 摘要 |
<p>PROBLEM TO BE SOLVED: To form a bright image without color fog by forming gradation using minimum to maximum luminance intensities of three or more color luminophors. SOLUTION: Transparent fluorescent ink is transparent when a visible light is emitted and is ink for emitting specific fluorescent color when an ultraviolet ray is emitted. Three types of the inks for emitting red, green and blue are used to form a full color image. The fluorescent inks are excited by a black light containing ultraviolet beam having 365nm of a wavelength to emit red, green and blue colors. In the case of an image in which color homeostatis is scarcely satisfied, target white is emitted in the circumstances. For example, a color which is desired to be seen by an achromatic color is uniformly emitted in a peripheral region 403 of an image region 401. And, gradation is formed toward further outside of the peripheral region of the region of the image region and may be stepwisely darkened.</p> |
