An arrangement for printing printed products on a printing substrate, wherein the latter has the following configuration: unwinder; web-fed printing machine (web fed print engine), i.e. web-fed offset printing machine or web-fed digital printing machine, wherein, when the web-fed printing machine is constituted as a web-fed offset printing machine, a first dryer is disposed downstream of the latter; a device for producing a coating, comprising a varnishing unit for coating a printing substrate processed in the printing machine, wherein the varnishing unit is used as a separate inkjet printer in the form of an inkjet head array for the line-by-line application to the preferably large-format printing substrate, wherein a printing substrate is passed through beneath the outlet openings of the inkjet heads, and wherein the inkjet heads are controlled by a control device, in such a way that the quantity distribution of the coating material can be varied both in the area as well as in the layer profile and therefore in the coating thickness, wherein the inkjet head array is constituted as a multi-head arrangement comprising a plurality of inkjet heads (inkjet head 1 to inkjet head n), wherein each inkjet head (inkjet head 1 to inkjet head n) comprises a plurality of outlet openings in the form of inkjet nozzles disposed beside one another, wherein the inkjet heads are disposed in a first row of first inkjet heads (inkjet head 1 to inkjet head n) and in a second row of second inkjet heads (inkjet head 2 to inkjet head 12) parallel to the first row, wherein the second inkjet heads (inkjet head 2 to inkjet head 12) are offset against the first inkjet heads (inkjet head 1 to inkjet head n) in the direction of the second row, in such a way that the first and second inkjet heads produce inkjet tracks lying beside one another (inkjet track 1 to inkjet track n) for the complete coverage of the printed product to be coated; the inkjet heads of the inkjet head array are connected for data transmission to an image data computer, wherein the image data computer is constituted as a control unit for the inkjet heads, in such a way that the drop characteristic of the inkjet heads can be modified by means of digital image data, such that the quantity distribution of the coating material can be varied continuously between a full area coverage with maximum layer thickness and the absence of any coating; wherein the device for producing the coating is disposed at a web exit at the end of the web-fed printing machine; a second dryer, wherein the second dryer is disposed, viewed in the transport direction of the printing substrate, directly after the device for producing the coating, in order to dry the liquid coating material on the printing substrate after the deposition. unwinder; web-fed printing machine (web fed print engine), i.e. web-fed offset printing machine or web-fed digital printing machine, wherein, when the web-fed printing machine is constituted as a web-fed offset printing machine, a first dryer is disposed downstream of the latter; a device for producing a coating, comprising a varnishing unit for coating a printing substrate processed in the printing machine, wherein the varnishing unit is used as a separate inkjet printer in the form of an inkjet head array for the line-by-line application to the preferably large-format printing substrate, wherein a printing substrate is passed through beneath the outlet openings of the inkjet heads, and wherein the inkjet heads are controlled by a control device, in such a way that the quantity distribution of the coating material can be varied both in the area as well as in the layer profile and therefore in the coating thickness, wherein the inkjet head array is constituted as a multi-head arrangement comprising a plurality of inkjet heads (inkjet head 1 to inkjet head n), wherein each inkjet head (inkjet head 1 to inkjet head n) comprises a plurality of outlet openings in the form of inkjet nozzles disposed beside one another, wherein the inkjet heads are disposed in a first row of first inkjet heads (inkjet head 1 to inkjet head n) and in a second row of second inkjet heads (inkjet head 2 to inkjet head 12) parallel to the first row, wherein the second inkjet heads (inkjet head 2 to inkjet head 12) are offset against the first inkjet heads (inkjet head 1 to inkjet head n) in the direction of the second row, in such a way that the first and second inkjet heads produce inkjet tracks lying beside one another (inkjet track 1 to inkjet track n) for the complete coverage of the printed product to be coated; the inkjet heads of the inkjet head array are connected for data transmission to an image data computer, wherein the image data computer is constituted as a control unit for the inkjet heads, in such a way that the drop characteristic of the inkjet heads can be modified by means of digital image data, such that the quantity distribution of the coating material can be varied continuously between a full area coverage with maximum layer thickness and the absence of any coating; wherein the device for producing the coating is disposed at a web exit at the end of the web-fed printing machine; a second dryer, wherein the second dryer is disposed, viewed in the transport direction of the printing substrate, directly after the device for producing the coating, in order to dry the liquid coating material on the printing substrate after the deposition.