VACUUM COPY FEEDER COPY SENSING DEVICE
Original Publication Date: 1994-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
A device for preventing sheet jams in a copier or printer includes a vacuum source with a sensor for detecting variations in the system vacuum caused by the absence of a copy sheet at the vacuum openings of a vacuum feedhead. When the absence of a sheet is detected by the sensor, a signal is sent by a microcomputer to the sheet feedhead motor stopping it until the sheet is presented at the vacuum openings.