Dual ribbon fuser

A fuser includes a pair of members defining a zone, a pair of electrical elements supported in series with a power supply by one of the members, and a thermostatic switch being electrically connected in parallel with one of the elements. When the temperature in the zone is below a predetermined level the switch is closed and shorts out the element with which it is in parallel. The switch opens when the temperature rises above said predetermined level, whereby less heat is provided for the zone. This arrangement provides a rapid warm up for the zone. Heat distribution in the zone is achieved by supporting the heating elements in zigzag fashion. Sagging of the elements thus mounted is prevented by bias means which maintain the elements under tension.