Determination of optimal coring values from psychophysical experiments

Hyung Jun Park; Zygmunt Pizlo; Jan P. Allebach

doi:10.1117/12.805375

19 January 2009 Determination of optimal coring values from psychophysical experiments

Hyung Jun Park, Zygmunt Pizlo, Jan P. Allebach

Author Affiliations +

Proceedings Volume 7242, Image Quality and System Performance VI; 72420K (2009) https://doi.org/10.1117/12.805375
Event: IS&T/SPIE Electronic Imaging, 2009, San Jose, California, United States

Abstract

The use of color electrophotographic (EP) laser printing systems is growing because of their declining cost. Thus, the print quality of color EP laser printers is more important than ever before. Since text and lines are indispensable to print quality, many studies have proposed methods for measuring these print quality attributes. Toner scatter caused by toner overdevelopment in color EP laser printers can significantly impact print quality. A conventional approach to reduce toner overdevelopment is to restrict the color gamut of printers. However, this can result in undesired color shifts and the introduction of halftone texture in light regions. Coring, defined as a process whereby the colorant level is reduced in the interior of text or characters, is a remedy for these shortcomings. The desired amount of reduction for coring depends on line width and overall nominal colorant level. In previous work, these amounts were chosen on the basis of data on the perception of edge blur that was published over 25 years ago.

Citation Download Citation

Hyung Jun Park, Zygmunt Pizlo, and Jan P. Allebach "Determination of optimal coring values from psychophysical experiments", Proc. SPIE 7242, Image Quality and System Performance VI, 72420K (19 January 2009); https://doi.org/10.1117/12.805375

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