| 摘要 |
PURPOSE:To eliminate roughness of middle tones at the time of printing and to improve printing quality by using a five primary color printing head to include black and white (or transparent) colors in addition to the three primary colors of cyanic blue, magenta red and yellow, and by printing with a special composition. CONSTITUTION:Pertaining to an ink jet printer which performs printing by having ink globules of different colors and of almost same size get to a recording medium, a printing heat of five primary colors which consist of three primary colors of cyanic blue, magenta red, and yellow, and black and, in addition, white or transparent is used. And among the picture elements that consist of plural number of elements, one color of black is used for printing of the element to be black in line of mixing the three primary colors of cyanic blue, magenta red and yellow. And for the element (the original color of texture of the paper) for which none of the above stated three primary colors is used for printing, the printing is performed with white or transparent ink, forming middle tone image. |
