A multiple print engine system includes a plurality of print engine modules (10) that are arranged in a parallel configuration. Each of the print engine modules (PEMs) is a dedicated print engine having an associated photoconductor drum (44) and a transfer drum (42). Paper is pulled from an associated...http://www.google.de/patents/US5596416?utm_source=gb-gplus-sharePatent US5596416 - Multiple printer module electrophotographic printing device
