| 摘要 |
<p>Photosensitive mixtures containing combinations of naphthoquinone-diazide-5-sulfonic acid esters with phenol-formaldehyde resins, 1-50% basic dyes and not more than 4.5% of hexaflurophosphate 2,5-diethoxy-4-(para-tolyl-mercapto)benzene-diazonium allow to obtain an optimum combination of the following characteristics: color change of the image after exposure to UV, even at the yellow light; contrast; fog; correction. a</p> |
