Doctor device for a screen printing machine, screen printing machine and method for operating a doctor device

摘要

A squeegee device comprises a squeegee, which is employed in an adjusting position against a screen-printing form of a screen-printing cylinder, a bearing device which enables an on-and-off movement between the setting position of the squeegee and a setting-off position, and a drive device by means of which the squeegee correlates directly or indirectly during operation to a machine and / or printing material phase position on the screen printing form on and can be turned off. The drive device in this case comprises a controllable drive means, by which the arrival and Abstellbewegung is mechanically independent of the machine and / or printing material phase position effected. When the squeegee device is operated, the squeegee is switched on and off as a function of the information concerning the printing material format and / or the printed image with varying phase lengths and / or positions.