Toner fixing devices

Details Toner fixing devices Toner fixing devices

G - Physics

03

G

314/38.5

G03G 15/20 (2006.01)

Patent

CA 1108223

ABSTRACT OF THE DISCLOSURE For the fixing of a toner image applied to a data carrier with the aid of fixing cylinders a preheater is provided in front of the fixing cylinders when viewed in the direction of movement of the data carrier. The preheater comprises a saddle over which the data carrier runs by its tonerless side and heater elements which are arranged beneath the saddle. The heating power of these heating elements and their arrangement below the saddle are selected in such a manner that the sum total of the heating power of all of the heater elements is at a maximum at the entry point of the data carrier and continuously decreases toward the data carrier exit point and in that the temperature of the saddle is constant across its full range. In this manner the data carrier is very rapidly heated to the requisite temperature.

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