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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 17, Iss. 11 — Nov. 1, 2000
  • pp: 1975–1981

Spectral model of a fluorescent ink halftone

Geoffrey L. Rogers  »View Author Affiliations


JOSA A, Vol. 17, Issue 11, pp. 1975-1981 (2000)
http://dx.doi.org/10.1364/JOSAA.17.001975


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Abstract

A model is presented of a fluorescent ink halftone. Unlike a nonfluorescent ink, which only absorbs, a fluorescent ink absorbs higher-energy photons and emits lower-energy photons. The amount of fluorescent light produced depends on the percent absorption of the incident light. For fluorescent ink printed on paper, both photon scattering within the paper substrate and multiple internal reflections between the ink layer and the paper substrate significantly increase the percent absorption, so a realistic model must include these effects. The model presented here utilizes the generalized Clapper–Yule theory, which accounts for photon diffusion that is due to both scatter and internal reflection. It is shown that while multiple internal reflections alone only marginally increase the percent absorption, when there are both scattering and internal reflection, the percent absorption is increased significantly. The current study is a theoretical model and does not present experimental results.

© 2000 Optical Society of America

OCIS Codes
(100.2810) Image processing : Halftone image reproduction
(160.2540) Materials : Fluorescent and luminescent materials

History
Original Manuscript: October 18, 1999
Revised Manuscript: May 15, 2000
Manuscript Accepted: May 15, 2000
Published: November 1, 2000

Citation
Geoffrey L. Rogers, "Spectral model of a fluorescent ink halftone," J. Opt. Soc. Am. A 17, 1975-1981 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-11-1975


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References

  1. P. Emmel, R. D. Hersch, “Spectral prediction model for a transparent fluorescent ink on paper,” Proceedings of the IS&T/SID Color Imaging Conference C: Color Science, Systems, and Applications (Society for Imaging Science and Technology, Springfield, Va., 1998), pp. 116–122.
  2. P. Emmel, R. D. Hersch, “A ‘one channel’ spectral colour prediction model for transparent fluorescent inks on a transparent support,” Proceedings of the IS&T/SID Color Imaging Conference C: Color Science, Systems, and Applications (Society for Imaging Science and Technology, Springfield, Va., 1997), pp. 70–77.
  3. G. L. Rogers, “Optical dot gain in a halftone print,” J. Imaging Sci. Technol. 41, 643–656 (1997).
  4. G. L. Rogers, “The effect of light scatter on halftone color,” J. Opt. Soc. Am. A 15, 1813–1821 (1998). [CrossRef]
  5. J. S. Arney, “A probability description of the Yule–Nielsen effect,” J. Imaging Sci. Technol. 41, 633–640 (1997).
  6. F. R. Clapper, J. A. C. Yule, “The effect of multiple internal reflections on the densities of halftone prints on paper,” J. Opt. Soc. Am. 43, 600–603 (1953). [CrossRef]
  7. H. R. Kang, Color Technology for Electronic Imaging Devices (SPIE Press, Bellingham, Wash.1997), Chap. 2.
  8. G. L. Rogers, “A generalized Clapper–Yule model of halftone reflectance,” Color Res. Appl. (to be published).
  9. G. Kortum, Reflectance Spectroscopy (Springer, New York, 1969), pp. 107–108.
  10. D. B. Judd, “Fresnel reflection of diffusely incident light,” J. Natl. Bur. Stand. 29, 329–332 (1942). [CrossRef]
  11. J. L. Saunderson, “Calculation of the color of pigmented plastics,” J. Opt. Soc. Am. 32, 727–736 (1942);D. B. Judd, G. Wyszecki, Color in Business, Science, and Industry (Wiley, New York, 1975), p. 453. [CrossRef]
  12. G. L. Rogers, “Optical dot gain: lateral scattering probabilities,” J. Imaging Sci. Technol. 42, 341–345 (1998).

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