Abstract: A printing device and method containing a carriage supporting print heads with a plurality of discharging elements to the image-wise forming of image dots of a marking substance on an a print medium, wherein the carriage is moveable in reciprocation in a main scanning direction and is also relatively displaceable with respect to the print medium in the sub scanning direction. Moreover, at least one radiation source is provided for irradiating the image dots of marking substance. The radiation source is designed such that the print medium with the dots formed thereon receives, in a traverse of the radiation source, a radiation dose which increases towards an edge of the dimension in the sub scanning direction of the area irradiated by the radiation source in the traverse.