Image fixing device and electrophotographic apparatus incorporated with such device

An electrophotographic apparatus comprising:

• a photosensitive drum having a photoconductive layer forming its surface,
• charging means for giving desired electric charges to a surface of said photosensitive drum,
• light application means for applying light corresponding to image information to the surface of said photosensitive drum,
• developing means by which a static latent image formed on the photosensitive drum surface by eliminating a portion of the electric charges by application of the light is developed with a developing toner into a toner image,
• transfer means for transferring said toner image onto a substrate,
• fixing means for fixing the toner image transferred to said substrate,
• means for removing the electric charges remaining on the surface of the photosensitive drum after said transfer, and
• cleaning means for removing the developing toner remaining on the photosensitive drum surface after said transfer,
• wherein said fixing means has two pressing means disposed in opposition to each other, and the pressing means contacting a toner applied side of said substrate is provided with a heating means and its pressing force against the toner applied side of the substrate is 0.3-1 kg/cm.sup.2 and while the pressing means pressing the substrate from a back side opposite from the toner applied side has its surface formed from an elastic material layer, said elastic material layer being given a pressing force which causes a deformation of said layer 0.5-1.5% in terms of its thickness, said deformation is not more than 1.5% in terms of thickness of said layer and the pressing force is not more than 1 kg/cm.sup.2.