发明名称 METHOD AND DEVICE FOR BRINGING OUT MEDIUM TONE IN INK-JET PRINTER
摘要 PURPOSE:To bring out medium tone wherein the turbidity and displacement of colors are inconspicuous by using the color mixture by juxtaposition and that by a color reduction method properly and separately in accordance with the density of color in a colored-image recording method wherein ink of multiple colors is jetted in dot matrixes numbering nXm. CONSTITUTION:In the case when a colored image represented by medium tone is formed by using image elements consisting, for instance, of dots numbering 3X3, a dot-matrix table wherein a cyan color takes a dot pattern formed by extending a recording area from an upper-left corner as a starting point toward a lower-right corner with the rise in a density level and wherein a magenta color and a yellow color take dot patterns formed by extending the recording area from a lower-right corner and from a lower-left corner respectively is employed as the one for each color employed for the aforesaid image elements. Accordingly, in a middle-low density area, colors overalp little with each other to present the color mixture by juxtaposition, which is superior in brightness, and in a high density area, the colors overlap with each other to present the color-mixture by the color-reduction method, whereby the conspicuousness of the displacement of color is prevented.
申请公布号 JPS57129749(A) 申请公布日期 1982.08.11
申请号 JP19810015655 申请日期 1981.02.06
申请人 FUJI SHASHIN FILM KK 发明人 YOSHIDA KAZUTAKA;HORIUCHI HIDEO
分类号 B41J2/21;G03F3/08;H04N1/40;H04N1/50;H04N1/52 主分类号 B41J2/21
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