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Volume: 16 | Article ID: art00072_2
Enhanced EP halftones with hexagonal dot packing
  DOI :  10.2352/ISSN.2169-4451.2000.16.1.art00072_2  Published OnlineJanuary 2000

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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Tomasz J. Cholewo, Steve Weed, Brian Cooper, Michael Lhamon, "Enhanced EP halftones with hexagonal dot packingin Proc. IS&T Int'l Conf. on Digital Printing Technologies (NIP16),  2000,  pp 708 - 713,

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