Browse Prior Art Database

Original Publication Date: 1996-Apr-30
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal


Proposed is an automatic dialing system which notifies a key operator of a machine paper jam or other malfunction over a telephone line. The system is suitable for facsimile or network printers which are unattended. It may be installed on copiers to relieve a situation wherein, users walk away from an inoperative machine without informing the key operator of the malfunction. The concept utilizes two sensors, and an automatic dialer having an internal microprocessor and key pad. The sensors detect passage of copy sheets through the machine paper path. One sensor is placed near the feeder and the other resides near the exit. Each sensor toggles a respective counter programmed into the microprocessor. Software instructions test the contents of one counter to the other. If they match, in accordance with sheet travel time between sensor stations and in repeated short intervals, the test concludes that the machine is running normally. A mismatch indicates a paper jam or other malfunction whereby, the key operator is automatically notified via the dialer and a pre-recorded telephone message.