JPS61206974U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view of an electronic copying machine using a heated roll type fixing device according to the present invention, Fig. 2 is a graph showing temperature changes of the heated roll, and Fig. 3 is a graph showing the temperature change of the heated roll. FIG. 4 is a schematic sectional view of an electronic copying machine using a roll type fixing device, and is an explanatory diagram showing the relationship between the heat roll type fixing device and the temperature distribution of the pressure roll. 1: Photoreceptor, 2: Transfer device, 3: Peeling device, 4
: Heat roll type fixing device, 5: Heat roll, 6,1
6: Pressure roll, 7: Core material, 8: Rubber material, 8a
: Inner rubber material, 8b: Outer rubber material, 9: Filler, P: Paper, Q: Paper transport path, R: Paper passing section, S:
Non-paper passing section.

Claims (1)

[Scope of utility model registration request] In a heat roll type fixing device that is composed of a heating roll and a pressure roll that are in pressure contact with each other, and fixes the toner image on the paper by passing the paper between these rolls, the rubber material of the pressure roll is heated. A heat roll type fixing device characterized by having a two-layer structure of an inner rubber material having a low conductivity and an outer rubber material having a higher thermal conductivity than the inner rubber material.