| 摘要 |
<p>The method for producing lithosheet by providing at least one roll of a pair of rolls with a surface texture of microscopic size peaks of roll material and a pattern having substantially no directionality such that the roll surface is substantially uniformly rough. A metal sheet (10) is directed between the rolls such that the rolls contact the sheet surfaces to provide at least one surface of the sheet with the non-directional roughness of the textured roll surface and extends the surface area of the sheet by forming microscopic depressions (12, 14) in the sheet surface for holding printing inks, for adhesion of hydrophobic coatings, and/or for providing a non-directional roughness for subsequent graining.</p> |
