Electrophotographic printing device of modular construction

In a modularly constructed electrophotographic printing device having a support device (15) which has a transporting device (16) on which a substrate to be imprinted can be transported between a start position and a finish position, wherein a plurality of electrophotographic units (12a to 12d) can be attached to the support device (15) between the start position and the finish position, which are designed as a photo conductor, a developer unit, or an exposure unit, the improvement comprising:

• the support device (15) having a plurality of receivers located one behind an other in a transport direction of the transporting device (16), each of the plurality of receivers including a uniform mechanical and electrical interface for attaching one of the electrophotographic units (12a to 12d) to the support device, wherein the electrophotographic units (12a to 12d) have fastening elements equipped for a mechanical connection and have a bus system for the electrical connection;
• wherein the printing device imprints flat rigid substrates.