Process for the manufacturing of a planographic printing plate capable of being processed into a planographic printing form requiring no wetting

摘要

In a process for the manufacture of a planographic printing plate which requires no wetting a roughened metallic support is provided with a dispersed layer of polytetrafluoroethylene containing a reducing agent and then treated with a solution containing a noble metal salt, thus forming nuclei of noble metal salt. The layer is then treated with a nickel-plating solution until a continuous nickel layer has been deposited and the deposited nickel layer is then reinforced by electroplating and deactivated by heating to 90 DEG to 100 DEG C, whereupon the dispersed polytetrafluoroethylene layer is sintered at temperatures between 380 DEG and 400 DEG C.