| 摘要 |
<p>A combination for photographic presensitisation of three solns. comprising (a) a presensitiser (b) a developer and (c) an assistant. The combination improves the presensitisation of offset printing plates, and is economical in use. Soln. (a) pref. contains in cyclohexanone as solvent a number of resins including e.g. Araladite B (Ct 200) (RTM).</p> |
