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(11) | EP 1 897 991 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Paper article having improved readability |
| (57) A paper article comprising a wavelength converting material and/or a colorant is
provided. The wavelength converting material has an absorption peak in the wavelength
range of from 400 to 500 nm and an emission peak in the wavelength range of from 500
to 600 nm, while the colorant has an absorption peak in the wavelength range of from
600 to 700 nm. Such a paper article provides increased readability for persons suffering
from cataract or cloudy vitreous body, and will have a preventive effect on the degeneration
of the outer layer of the retina, and/or the development of myopia.
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