Color Reproduction of Fluorescent Inkjet Ink on Security Paper
There are still some defects in the printing of fluorescent color images on security paper,such as gloomy image and low clarity.In order to meet the high anti-counterfeiting requirements of security paper related applications and improve the color image reproduction effect of three-color fluorescent inkjet ink on security paper,the photophysical properties,color gamut and overprint color sequence of three-color fluorescent inkjet ink on security paper were studied.The color light gray balance curve on security paper was established by using the method of constructing the color light gray balance curve based on spectrum.At the same time,the calling accuracy was investigated.The results showed that when two colors are overprinted,the ones with high spectral intensity are printed first,and then the ones with low spectral intensity are printed.When three-color overprinting,the optimal overprinting sequence is blue,red and green.The color gamut of red ink printed three times on security paper can meet the requirements of color management.After the correction of the color light gray balance curve,the tone level of the image is more abundant.The study improve the color reproduction effect of fluorescent inkjet ink and expand its application field.
Fluorescent inkjet inkSecurity paperColor reproductionGray balance of color light
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