Vacuum plating process for printing roller

The invention discloses a plate roller vacuum plating process which comprises the following steps: step 1, cleaning a plate roller to remove pollutants on the surface of the plate roller, and then drying the plate roller to keep the surface of the plate roller dry and clean; secondly, the cleaned plate roller is fed into a vacuum operation chamber, and the vacuum operation chamber is vacuumized; and 3, a sputtering coating device is used for conducting the coating procedure on the plate roller, the sputtering coating device comprises an ion output assembly and a target material, in the coating procedure, the ion output assembly outputs ions with charges, the ions are emitted to the target material, so that atoms on the surface of the target material leave the target material, the atoms are emitted to the plate roller, and a coating is formed on the surface of the plate roller. The plate roller is conveyed into the vacuum operation chamber after being cleaned and dried, the ions with charges are sprayed to the