Dampening water feed roller for planographic printing press.

摘要

A dampening water feed roller, characterized by a process of manufacture which comprises forming a flame sprayed layer of a ceramic material composed of 100 to 0% by weight of Al2O3 and 0 to 100% by weight of TiO2 on the peripheral surface of a metallic roller, subjecting the flame sprayed ceramic layer to a pore-occluding treatment with a hydrophilic SiO2 type inorganic pore-occluding agent, and grinding the treated layer to surface roughness of not more than 1.6 S, and which permits supply of the dampening water without using the additives such as isopropyl alcohol in the dampening water.