| 摘要 |
A technique for producing high quality output on a mixed-resolution color printing device. Unlike current techniques that impose global ink-limit and dot scheduling constraints, the new method can improve the quality of text and line-art features by rendering the outline at the highest resolution yet maintaining an overall ink-limit by compensating the inside density. The new method uses a programmable unsharp mask filter to detect and outline these edges. The system uses bigger black drops than for the three colors, so the big drops have to be treated differently for avoid saturating the paper. The method allows a little saturation, selectively as necessary, and controls the drop spacing and color correction to minimize the problem for nearby pixels. The result is that the quality of rendering is superior to that of the current rendering methods, especially for text and fine line-art graphics. The technique also limits head heating.
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