| 摘要 |
<p>A method (500) for improving the quality of printing processes involving black pixel depletion by printing composite ink in pixel spaces where a black pixel depletion process leaves unfilled pixel spaces. Black pixel depletion data (502) are employed (for example, a depletion mask is inverted) to generate (508) a composite printing mask which designates pixel spaces which are candidates for being filled in with a composite ink. In a preferred embodiment, edge pixels of black fill areas are excluded (514, 516) from the candidate pixels. In a preferred embodiment, the white pixel spaces are filled in by printing a plurality of different coloured inks (e.g., cyan/magenta/yellow or cyan/magenta) within these unfilled pixel spaces. In a preferred embodiment, the composite printing mask additionally serves as an under/overprinting (UOP) map.</p> |
