Abstract
Hexagonal dot packing offers advantages for electrophotographic (EP) printing over conventional dot placement on a square grid. These advantages derive from a reduced neighborhood with which each dot interacts. Hexagonal dot packing has exhibited better grayscale performance with small clusters. Multiple dot centers in each tile allow obtaining more gray levels for a particular screen frequency. As a limiting case of multiple dot centers in a tile, stochastic screening on hexagonal and square grids is examined using a commercially available printing system. A novel method for comparing halftone spatial frequency components for all gray levels is demonstrated.
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