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FUSER ROLL MOLD SEALS

IP.com Disclosure Number: IPCOM000027839D
Original Publication Date: 2000-Feb-29
Included in the Prior Art Database: 2004-Apr-09

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a multi-piece seal for a two-part mold used in the manufacturing of fuser rolls for electrophotographic printing applications. The fuser roll mold seals allow the core to expand in length and diameter using ULTEMB plastic. When the mold closes, the seals clamp around the roll with enough elasticity to conform to slightly different diameters. Additionally, the aluminum core is allowed to slide in the seal as the part grows by way of heating. The seals also confine the pressure of Liquid Silicon Rubber (LSR) and High Temperature Vulcanization (HTV) material in the molding area and limit vacuum at the start of the molding process. The seal material is abrasion resistant to fillers in the LSFVHTV material. These seals also allow easy change in roll diameter for a larger or smaller core without reworking the mold given the LSR/HTV grind diameter remains the same.