A technique for saving data related to given machine events in a control that normally records machine events or faults in a first-in, first-out buffer of finite size called an occurrence log by selectively setting the control to respond to the occurrence of a given machine fault or event, monitoring...http://www.google.de/patents/US5533193?utm_source=gb-gplus-sharePatent US5533193 - Method of saving machine fault information including transferring said information to another memory when an occurrence of predetermined events or faults of a reproduction machine is recognized
