MEASUREMENT OF LUMINESCENCE IN COLOURED PRINTED MATERIALS
Journal Title: Metrology and Measurement Systems - Year 2006, Vol 13, Issue 3
Abstract
While fluorescent pigments have been used for many years, the formulation and quality control of coloured printed materials containing them, has been a challenge, primarily due to lack of appropriate instrumentation at a cost that is economically viable to make the necessary measurements. This paper deals with the economical instrumentation and measurement of fluorescent properties of coloured printed material under investigation. Significance of the correct method of excitation and detection are discussed. Characteristics of desirable commercially available light sources and detectors are also described. Application of one of such a detector for our investigation is considered in some detail.
Authors and Affiliations
ANTHONY MCGRATH, S. MORI VAEZI-NEJAD
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