| 摘要 |
PURPOSE:To set retouch processes of three colors to a single process of an achromatic color, and also, to prevent the generation of a color mixture caused by a protrusion by executing a retouch using ink being an achromatic color and having intermediate transmittivity to a pin hole. CONSTITUTION:Pin holes 3r, 3g and 3b generated at the time point when printing of red, green and blue patterns 2R, 2G and 2B of a definition pattern filter 1 is finished, are corrected by executing a retouch process only once by one color of ink 4 being an achromatic color, and also, having intermediate transmittivity. In this case, in a very narrow vision range, a man's visibility characteristic is scarce in the discriminating capacity of each color, only a luminance difference is detected chiefly, and by matching the transmittivity of the ink 4, it does not occur that one picture element containing the pin holes 3r, 3g and 3b is sensed as a different color. In such a way, a single retouch process is enough and the production efficiency is improved, and also, even if a protrusion is generated at the time of process, no color mixture is generated since ink of an achromatic color is used. |
