Patent ID: 7102102

Claim:
A printing system wherein a transfer drum imparts a desired image on a medium for imprinting the image on the medium, and including a heater for preheating the medium to a selected temperature prior to the imprinting for facilitating reception of the image on the medium from the drum, the heater comprising a pattern of heat traces bonded to a support plate, the plate being disposed in the printing system for engaging the medium for effecting the heating of the medium to the selected temperature, and including a fuse disposed in electrical series with the pattern of heat traces for interrupting a supply of power to the heater upon an undesired increase in the supply and consequent overheating of the heater; and, wherein the heat traces are connected to the supply of power with a line lead and a neutral lead, and the fuse comprises first and second fuses respectively connected to the line lead and the neutral lead.