Paper processing equipment such as a laser printer uses a plurality of sensors to detect the presence of paper in the paper path of the equipment. In order to determine the nature of malfunctions indicated by presence or absence of paper at the sensors, data from the sensors is coordinated with information...http://www.google.es/patents/US5563686?utm_source=gb-gplus-sharePatente US5563686 - Input paper sensor for single sheet paper processing equipment
Input paper sensor for single sheet paper processing equipment
