Apparatus and method for printing on a non-planar surface such as diaphragm arrangement for a household appliance

Means (30) for printing on a non-planar, in particular embossed, surface (26) of a workpiece (24) made of plastic by an ink jet printing method, the device (30) having a printing device (32), a workpiece carrier (34) and a traversing means (36), wherein the printing device (32) comprises at least three color nozzle (38), each of which is adapted to a color directed to a target direction (40) to deliver, and the workpiece carrier (34) having a workpiece holder (42) is adapted therefor, the workpiece (24) to be fixed relative to the workpiece holder (42), and wherein the workpiece holder (42) and the color nozzles (38) along an adjustment direction (44) are arranged displaced relative to each other, the workpiece holder (42) and the traversing means (36) relative to each other are arranged displaceably, and the printing apparatus (32) and the workpiece carrier (34) by means of the traversing means (36) along a Vorschubrichtun g (46) relative to one another are displaceably arranged, wherein at least two color nozzles (38) form a group (54) and exclusively together but relative to the other color nozzles (38) are displaced outside the group (54).