AUTOMATIC SENSOR CLEANING SYSTEM
Original Publication Date: 1983-Feb-28
Included in the Prior Art Database: 2004-Apr-04
Xerox Disclosure Journal
In the process of manipulating documents in a recirculating document handler (RDH), paper dust and other contaminants collect and in time reduce the sensitivity of opto-electronic sheet sensing devices controlling the timing and operability of the RDH. This may be prevented by directing a continuous, but pulsating stream of air at sensor and sensor mirror surfaces while the document handler is in operation. T'nis air flow is strong enough to keep the paper dust and other particles from contaminating the sensors but small enough so as to not impede the RDH's ability to handle the lightest weight documents.