Patent ID: 7873288
Filing Date: 2011-01-18
Classification: G03G

Abstract:
1. A fixer unit system for an electrographic image generation device, comprising: a fire detector to detect a fire in a fixer unit of the fixer unit system; at least one heat radiator in the fixer unit to fix a toner image to be fixed onto a substrate material; said fire detector comprising a photoelectric sensor arranged at or near the fixer unit adjacent the substrate material having the toner image to be fixed; the photoelectric sensor being arranged or designed such that it does not detect at least a portion of radiation generated by the at least one heat radiator wherein an optical filter is provided for the photoelectric sensor that does not let said at least a portion of the radiation generated by the at least one heat radiator to pass to the photoelectric sensor; the fixer unit having at least one heat radiator arranged opposite the front side or the back side of the substrate material, such that at least one toner image on the front side or the back side of the substrate material is fixed on the substrate material with aid of the radiant heat generated by the heat radiator upon directing the substrate material past the heat radiator; and an intervening space provided between the heat radiator and the substrate material, and wherein the at least one photoelectric sensor monitors at least one region of the intervening space.