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Volume: 2 | Article ID: art00089
A Unified Model of Optical and Physical Dot Gain in Printing
  DOI :  10.2352/CGIV.2004.2.1.art00089  Published OnlineJanuary 2004

A unified model coping with both physical and optical dot gains on color tone reproduction of print is proposed. The physical dot gain, Δσ, is approximated by a quadratic function of nominal dot percentages, σ0. The function, for each color, is characterized by a single parameter depending on printing technologies as well as ink-paper interactions, and has a symmetric form around σ0 = 50%. Applications to a color laser printer (on office copy paper) reproduces the experimental dot gain curves fairly well. Dependence on physical dot percentage, σ = σ0+Δσ, results in the optical dot gain and in turn the overall dot gain asymmetric forms, plotted against σ0. Furthermore, theoretical analysis reveals fundamental differences between physical and optical dot gains.

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Li Yang, "A Unified Model of Optical and Physical Dot Gain in Printingin Proc. IS&T CGIV 2004 Second European Conf. on Colour in Graphics, Imaging, and Vision,  2004,  pp 443 - 448,

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