Paper Title:
A Study of Optical Brightening Agents (OBA) Correction Methods
  Abstract

Almost all papers contain optical brightening agents (OBA) in process color printing. The colorimetric value shifts toward larger negative b* as the amount of OBA in paper increases. Paper containing OBA creates problems in printing conformance because colorimetric aim points of the printing standards, e.g., ISO 12647, have not been updated. To correct for the measurement differences due to OBA effect, this research printed the IT8.7/4 target on paper with and without OBA under the same printing conditions, measured with a spectrophotometer including UV, and corrected printed color produced by paper with without OBA with a linear correction per ISO 13655 as well as an experimental polynomial model via regression. The results showed that the polynomial method corrects the measurement difference between paper with and without OBA better than the linear correction method. Specifically, 90% of color differences between uncorrected data are 4.5∆E76; the linear method can correct the difference to 2.8∆E76; and the polynomial method can correct the difference to less than 1.6∆E76.

  Info
Periodical
Edited by
OUYANG Yun, XU Min and YANG Li
Pages
346-349
DOI
10.4028/www.scientific.net/AMR.174.346
Citation
Q. H. Tian, R. Chung, "A Study of Optical Brightening Agents (OBA) Correction Methods", Advanced Materials Research, Vol. 174, pp. 346-349, 2011
Online since
December 2010
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Price
$32.00
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