Browse Prior Art Database

EXTENDING FUSER ROLL LIFE

IP.com Disclosure Number: IPCOM000027860D
Original Publication Date: 2001-Apr-30
Included in the Prior Art Database: 2004-Apr-09
Document File: 2 page(s) / 60K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a method of extending the life of a Viton@ fuser roll used in an electrophotographic printing machine by keeping the fusing roll clean. New additives in color toner have drastically reduced fuser roll life. The cause is believed to be the amine coating on the AerosilB that attaches itself to Viton@ in exactly the same way as amino fuser oil attaches to VitonB. The latter is required for good release. The attached aerosil@, which contains a large number of propylamine groups on the surface, reacts with unsaturated sites in the polyester toner, causing a buildup of toner on the VitonO surface and the subsequent offset failure.

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XEROX DISCLOSURE JOURNAL

EXTENDING FUSER ROLL LIFE

CheCChow .

Rabin Moser

Proposed Classification
U. S. C1. 399/322 Int. C1. G03g 15/20

Disclosed is a method of extending the life of a Viton@ fuser roll used in an electrophotographic printing machine by keeping the fusing roll clean.

New additives in color toner have drastically reduced fuser roll life. The cause is believed to be the amine coating on the AerosilB that attaches itself to Viton@ in exactly the same way as amino fuser oil attaches to VitonB. The latter is required for good release. The attached aerosil@, which contains a large number of propylamine groups on the surface, reacts with unsaturated sites in the polyester toner, causing a buildup of toner on the VitonO surface and the subsequent offset failure.

By keeping the fuser surface clean, it has been demonstrated that the shortfall in release life has been essentially eliminated. The method of cleaning is usually by a cleaning web, however, it is chosen in this disclosure to clean the fuser surface by increasing the back tension on a sheet of copy paper to create micro slippage and abrasion. For machines using web paper, the back tension can be achieved by applying a drag force to the paper feed. In cut sheet devices, a corona charge to the paper, immediately after the copy has entered the fusing nip, can provide the back tension. The cost and space required to keep the fuser surface clean is significantly lower than using a cleaning web, which...