Roll fuser

Details Roll fuser Roll fuser

G - Physics

03

G

314/38.5

G03G 15/20 (2006.01)

Patent

CA 1059576

ABSTRACT OF THE DISCLOSURE A roll fusing apparatus comprising a heated roll structure and a resilient backup roll cooperating with the heated roll structure to form a nip through which toner images as with the toner images contacting the heated fuser roll structure. The heated fuser roll structure comprises a rigid core and an elastomeric outer layer, the outer surface of the rigid core and the inner surface of the elastomeric layer having non-uniform cross sections which are complementary one to the other to thereby provide alternately thick and thin segments or portions of elastomeric material wherein the thick portions provide for a greater capacity of release agent material than the thin portions while the thin portions provide a minimal barrier to heat transfer from within the heated fuser structure to the external surface of the elastomeric layer.

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