Importance

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Abstract

A binary pagewidth printhead without substantial grayscale capability includes an array of adjacent printhead segments that are distributed across the pagewidth printhead so that adjacent segments overlap at their ends by a predetermined distance. A plurality of printing pixels extending along each segment have physical differences that effect substantially non-uniform transfer functions that decrease toward the ends of segments over the overlap distance. The physical characteristics of the printing pixels are such the their transfer functions vary linearly over the overlap distance. The physical characteristics of the printing pixels may be such the their transfer functions increase monotonically from a small value at the ends of the printhead segments to a larger value away from the ends of the printhead segments. The physical characteristics of the printing pixels in a central portion of each segment are preferably uniform such the their transfer functions are constant over the central portions. Preferably, the transfer functions applied to adjacent segments are of mirror symmetry.

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First Claim