Patent ID: 11904599
Assignee: ABSOLUTE ENGINEERING LIMITED
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of cleaning a print roller, comprising:
providing an ultrasonic cleaning bar having at least one ultrasonic energy source;
engaging the ultrasonic cleaning bar with an ink-carrying surface of the print roller, the ultrasonic cleaning bar and the ink-carrying surface defining a trough therebetween for containing a cleaning fluid; and
executing a cleaning routine, the cleaning routine comprising:
filling the trough with the cleaning fluid so that the cleaning fluid contacts the ink-carrying surface;
activating the ultrasonic energy source for a period of time to remove contaminants from the ink-carrying surface of the print roller so that the contaminants become suspended in the cleaning fluid;
preventing cleaning fluid draining from the trough whilst the ultrasonic energy source is activated; and
draining the suspension of cleaning fluid and contaminants from the trough;

wherein the method comprises executing the cleaning routine at least two times in succession before cleaning of the print roller is complete.