A configuration for exchanging inkjet printing modules in a franking and/or addressing machine having a shaft-shaped receptacle with a locking device for the inkjet printing modules. The functional reliability and an extension of the service life of the printing device are improved by achieving simple and reliable exchanging of the inkjet printing module. In particular, easy drawing of the inkjet printing module is made possible and mechanical impairment of the mating contacts for the inkjet printing module is prevented. Devices are provided for pulling and releasing the contact of the inkjet printing module in the receptacle. These devices are coupled mechanically to one another in such a way that, when the pulling process is initiated, contact is released at the same time. A wiping apparatus is arranged in the pivoting region of the rear edge of the nozzle surface of the inkjet print head.