Browse Prior Art Database

Original Publication Date: 1980-Dec-31
Included in the Prior Art Database: 2004-Apr-02

Publishing Venue

Xerox Disclosure Journal


In an electrophotographic printing machine, a roll fuser is frequently employed to permanently affix the toner particles to the sheet of support material. Oc-casionally, the sheet of support material is not stripped from the roll fuser and wraps thereabout. Ideally, it is highly desirable to detect this latter condition to prevent machine damage and avoid service calls. The roll fuser temperature is closely monitored by a sensor in order to maintain it at a predetermined level. Under normal operating conditions, f user temperature excursions are predictable. When a sheet of support material is wrapped around the fuser roller, these excursions become significantly larger. Thus, if a temperature sensor detects higher temperature excursions, this provides an indication of a sheet being wrapped around the fuser roller.