Back to results
US 6,284,373 B1Granted
Electrostatic fuser rolls and belts
AssigneeLexmark International, Inc.
InventorsGregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLexmark International, Inc.
InventorsGregory L. Ream, Ronald L. Roe, Bradley L. Beach, Steven A. Curry
Estimating the term…
Heat rolls and fuser belts utilized in the fusing step of the electrophotographic process are disclosed. These belts and rollers eliminate toner offset while still maintaining excellent release characteristics of the printed page from the fuser. The heat rolls comprise a core member having coated thereon a plurality of concentric layers, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the roll exhibits electrical breakdown at about 250 volts or less. The fuser belts comprise a heat resistant resin substrate (such as a polyimide belt) carrying thereon a plurality of layers coating the outer surface of said belt, wherein at least one of said layers (preferably the top layer) does not contain electrically conductive materials and wherein the belt exhibits electrical breakdown at about 250 volts or less.
A heat roller fixing device for use in electrophotography comprising a core member having coated thereon a plurality of concentric layers, said layers comprising a primer layer on said core, an intermediate layer on said primer layer, and a topcoat layer on said intermediate layer, wherein the topcoat layer does not contain electrically-conductive materials and has a thickness of from about 1 to about 7 μm and wherein the roll exhibits electrical breakdown at about 250 volts or less.
Dependencies are inferred from the claim text.