| 摘要 |
PURPOSE:To make a holograph into fluorescent color, by writing a letter on a writing face with ink containing fluorescent dye, applying a coating solution containing an exciting agent on the holograph or by applying the coating solution to the writing face and writing the letter on the coated face. CONSTITUTION:(A) A letter is written on a writing face (A) ink containing fluorescent dye and (B) a coating solution containing an exciting agent (e.g. polyethylene glycol, etc.) is applied to the holograph or the solution B is applied to the writing face and the letter is written on the coated face to make the holograph into fluorescent color. The amount of the fluorescent dye used is preferably 0.1-10wt% and that of the exciting agent is preferably 2-40wt%. |
