COMPRESSIBLE PRESSURE OR FUSER ROLL
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
A compressible roll is provided which may be used either as the pressure roll or the fuser roll in a fusing device in an electrostatographic copying machine. The compressible roll is made by providing a layer of a compressible rubber on a core. The surface of the compressible rubber layer may be porous or it may be sealed. For fuser roll application, the porosity should be less than about 20% voids by volume. For pressure roll application, the porosity should be somewhat larger than that for fuser rolls. An open pore structure on the surface of the compressible roll is desirable when materials such as release agents are to be carried on the surface of the rolls. A closed pore structure on the surface of the compressible roll is desirable when ease of cleaning and similar considerations are important. Specifically suitable compressible rubber for use in this invention includes various compressible silicone rubbers known to the art.