| 摘要 |
The present invention provides a method for making a lithographic printing plate according to silver salt diffusion transfer processing, said method comprising the steps of: image-wise exposing an imaging element comprising on a support in the order given a silver halide emulsion layer and a layer comprising physical development nuclei; processing a thus obtained image-wise exposed imaging element using a processor comprising a developing unit, said developing unit comprising (i) a tank holding an alkaline processing liquid, (ii) a plurality of guide rollers 5 and guide plates 121 to 126 for transporting and guiding said image-wise exposed imaging element through said alkaline processing liquid characterised in that said guide plates 121 to 126 exhibit a surface roughness Ra of 0.3 mu m or less at the side of said guide plates 121 to 126 making contact with said image-wise exposed imaging element during transportation of said image-wise exposed imaging element through said developing unit. |
