Browse Prior Art Database

Interlock Memory

IP.com Disclosure Number: IPCOM000053366D
Original Publication Date: 1980-Jan-01
Included in the Prior Art Database: 2005-Feb-12

Publishing Venue

IBM

Related People

Authors:
Brown, LC Heidelberg, EA Hubbard, JH Spivey, PR [+details]

Abstract

Previous copier protection circuits could be reset by turning the circuit breaker off and on. If a paper jam occurred and the front door interlock failed in the closed position, the Check Paper Path light could not be extinguished by pressing the Reset button after clearing the jam. The operator, however, could turn the circuit breaker off and back on to reset the protection circuits, turn off the Check Paper Path light, and then run the machine with the door open.