Abstract: A method for printing color images with the aid of a print head is provided. The operation is carried out in a reciprocating movement relative to a substrate and includes ink nozzles or nozzle arrays that are disposed one behind the other in the direction of movement. The ink nozzles can produce ink of different ink colors, including black. The ink colors from which the pixel color is formed include the color black and the two neighbouring colors of the pixel color in a color space. The color black is applied as the centermost color. Colour differences between pixels formed in the different directions of movement are virtually eliminated in this way.

Abstract: For the formation of colored pixels on a substrate, a print head can be used which performs a forward and return movement in relation to the substrate and which has a number of ink nozzles, in which the different ink nozzles can produce ink droplets of different colors. A print head which, in the direction of the first movement, comprises at least two parallel rows of at least two ink nozzles can be used. Preceding the printing step the printing method comprises the step of entailing the allocation in each case of two neighboring colors in a color space to ink nozzles of different rows, and black either to one or more ink nozzles of a separate row or to the first ink nozzle and last ink nozzle of the same row.

Abstract: In a method for the formation with a print head on a substrate of pixels with a predefined pixel colour by means of droplet deposition, a print head is used which is set up so that, during operation, it performs in one pass a forward and return movement in relation to the substrate. The print head comprises ink nozzles which are aligned in a row behind one another in the direction of movement of the print head, which row comprises an initial series and a final series of ink nozzles, for at least two different first colours, and also a middle series of ink nozzles for at least two different additional colours, which additional colours cannot be formed from the first colours. The method comprises the steps of printing a pixel with a predefined pixel colour by the successive deposition of ink droplets of colours from the row of ink nozzles, in which black is composed as the first and/or the last colour with the aid of ink droplets of the first colours from the ink nozzles.