INFRARED-ABSORPTIVE FLEXOGRAPHIC PRINTING INK

摘要

Provided is an infrared-absorptive flexographic printing ink including antimony-doped tin oxide, and a vehicle. The antimony-doped tin oxide includes tin oxide and antimony oxide, and satisfies (a) and/or (b): (a) the half-value width (∆2θ) of a peak in the vicinity of 2θ=27˚ obtained from an X-ray diffraction measurement is not more than 0.30; and/or (b) the antimony oxide content is 0.5-10.0 wt% using the weight of the antimony-doped tin oxide as a reference, and the degree of crystallization, i.e. a value obtained by dividing, by the half-value width (∆2θ), the peak value of the peak in the vicinity of 2θ=27˚ obtained from the X-ray diffraction measurement, is at least 58427.