Browse Prior Art Database

HEATING END REDUCTION FOR DUAL CONCENTRIC APPLICATIONS

IP.com Disclosure Number: IPCOM000027289D
Original Publication Date: 1996-Feb-29
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 77K

Publishing Venue

Xerox Disclosure Journal

Abstract

An inside concentric for an electroformed roller or fuser roll is heated to facilitate insertion into an outside concentric. This may be accomplished as part of an end cut operation. It is especially advantageous when one or more of the concentrics have additional features such as a stub or shaft. Heating relieves internal compressive stress causing the heated portion to shrink to a smaller diameter.

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XEROX DISCLOSURE JOURNAL

Proposed Classification

HEATING END REDUCTION FOR DUAL CONCENTRIC US. C1.355/282 APPLICATIONS Int. C1. G03g 15/20
William G. Herbert
Gary J. Maier
Loren E. Hendrix

-. 12

18

XEROX DISCLOSURE JOURNAL - Vol. 21, No. 1 JanuaqdFebruary 1996 49

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HEATING END REDUCTION FOR DUAL CONCENTRIC APPLICATIONS (Cont'd)

An inside concentric for an electroformed roller or fuser roll is heated to facilitate insertion into an outside concentric. This may be accomplished as part of an end cut operation. It is especially advantageous when one or more of the concentrics have additional features such as a stub or shaft. Heating relieves internal compressive stress causing the heated portion to shrink to a smaller diameter.

United States Patent 4,678,691 issued to Herbert, Jr. et a1 discloses electroforming hollow members. They may be slipped together to make rollers and other devices which are useful in copiers and printers. By electroforming these devices, exacting tolerances are maintained so that two or more components are swedged together. Additionally, the fit is consistent enough to enable one to electroform each component to a thickness which is one-half the value required to reduce weight and cost. This type of fit makes device assembly difficult since alignment must be perfect before components slide together. An improvement is proposed wherein two pre-electroformed concentrics are assemb...