Browse Prior Art Database

Hot Roll Fuser

IP.com Disclosure Number: IPCOM000051008D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Evans, HE: AUTHOR [+2]

Abstract

The elastomer to metal adhesion of a xerographic fuser's hot roll is improved by the use of a primer coat which includes a filler.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 1

Hot Roll Fuser

The elastomer to metal adhesion of a xerographic fuser's hot roll is improved by the use of a primer coat which includes a filler.

The presence of a filler, such as fumed silica, in elastomeric material is known to increase the material's mechanical strength. However, it is also known that the presence of this filler at the fusing surface of a xerographic hot roll results in poor toner-release properties.

In such a hot roll, the underlying metal cylinder is coated with a primer, prior to applying the elastomer sleeve, as by injection molding the elastomer.

The presence of this reinforcing filler in the primer coating causes the filler to migrate into the elastomer sleeve, increasing its strength, but this migration does not reach the sleeve's outer fusing surface. Thus, the hot roll is provided with both good mechanical strength and good toner release properties.

It is desirable to pretreat the selected filler, for example, fumed silica, with silane, or other coupling agents, before mixing it with the primar solution.

1