Most printers who are faced alongside a printing chore that's intended to glow nether dark lite tend to hollo back alone well-nigh the issues of printing alongside fluorescent inks (see the postal service HERE ). However, in that place is around other of import detail that needs to move considered too that is the final result that the sum of, or lack, of OBAs (Optical Brightening Agents) inward the newspaper volition convey on the concluding result. For example, viewed nether a dark lite this poster "glows" inward an expected way: And it volition human face similar, except for the glow effect, nether normal room too dark lite conditions. However this poster which has large areas of white, i.e. unprinted paper, looks real unlike nether normal household light: compared alongside beingness viewed nether dark light: The divergence inward appearance is caused past times the sum of OBAs inward the paper. In this example, the newspaper contains low/no OBAs. Under normal dom...