| 摘要 |
1. Process for the development of exposed light-sensitive printing plates having a support of anodically oxidized aluminum and a light-sensitive coating which contains an o-naphthoquinone-diazide and an alkali-soluble resin, the exposed areas of the coating being washed off with an aqueous-alkaline developer solution, characterized in that, the development is effected in the presence of an ionizable compound of an element of the groups IIa, IIIa or IIIb of the Periodic Table, which is added to the developer solution, and wherein the developer solution used contains 0.001 to 0.5 % by weight of the ionizable compound. |
