The Uni-ball Vision roller ball pen features the Uni-Flow ink system, which creates a steady flow of water-resistant ink and smooth, consistent colour. The pigment-based ink forms an indelible bond to paper, resulting in strong colours and document security. It is resistant to chemicals that can wash away dye-based inks, thus preventing check washing (a common method of check fraud). The ink is acid-free, fade-resistant, and of archival quality—ideal for valuable documents.
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