Browse Prior Art Database

FUSER ROLL MOLD SEALS

IP.com Disclosure Number: IPCOM000027839D
Original Publication Date: 2000-Feb-29
Included in the Prior Art Database: 2004-Apr-09
Document File: 2 page(s) / 46K

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.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

FUSER ROLL MOLD SEALS

Gregory A. Ludgate Frank P. Sgabellone

Proposed Classification
U. S. C1. 399/320 Int. C1. G03g 15/20

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.

DP5914

Xerox Disclosure Journal - Vol. 25, No. 1 JanuaryFebruary 2000 41

[This page contains 1 picture or other non-text object]

Page 2 of 2

42 Xerox Disclosure Journal - Vol. 25, No. 1 JanuaryFebruary 2000

[This page contains 1 picture or other non-text object]