Newspapers and other printed matter fed from a printing press or inserting machine are generally folded or delivered in a continuous stream with the papers oriented in an overlapped or imbricated relationship. The stream of papers are received and stacked by the stacking apparatus or stacker which must...http://www.google.es/patents/US6439830?utm_source=gb-gplus-sharePatente US6439830 - Opening guard mechanism for printed product stacking device
Opening guard mechanism for printed product stacking device