Patent ID: 8427705
Filing Date: 2013-04-23
Classification: G03G

Abstract:
1. A method of synchronizing the timing of a plurality of physically coupled print engines by minimizing primary imaging member timing errors that are misleading indications during synchronization, the method comprising: determining a target time using a position of one or more timing marks on a first primary imaging member in a first print engine having a first timing; directing a receiving sheet from the first print engine to a second primary imaging member in a second print engine having a second timing; calculating a nominal arrival time of the receiving sheet relative to a fixed position in the second print engine; measuring an actual timing variation using the nominal arrival time of the second print engine and the target time in the first print engine; determining if the actual timing variation is within a predetermined error tolerance and if not, an error is flagged as an error limit; and counting the error limits to yield a total an error limit number and if the error limit number exceeds a timing tolerance, generating a signal not to use the information that generated the error limit.