Dot depletion in pixel-array printing

Details Dot depletion in pixel-array printing Dot depletion in pixel-array printing

1996-10-10

1998-01-06

Bayerl, Raymond J.

395101, H04N 140

Patent

active

057064148

ABSTRACT:
A method for reducing the volume of ink applied to high-density print regions by depleting certain pixels in these regions avoids problems associated with excessive ink, improves economy, and yet retains print quality. Pixels located along the edges of high-density regions are identified and not depleted, thus preserving the sharp image demarcations characteristic of high quality printing. An upper bound for the percentage of depleted pixels may be chosen. A two-dimensional depletion table having certain entries designated as potential depletion candidates is tiled across a pixel image to be depleted. The designated entries are spaced apart within the table. If a pixel in the image is a candidate to be depleted according to the depletion table and if it is not an edge pixel, then it is depleted.

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patent: 5426010 (1995-06-01), Morton

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