Browse Prior Art Database

Controlling Fuser Roll Life And Failure Mode

IP.com Disclosure Number: IPCOM000119420D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 32K

Publishing Venue

IBM

Related People

Minor, JC: AUTHOR [+2]

Abstract

In a wet release, high thermal conductivity hot roll xerographic fuser, where a polydimethyl siloxane release agent is applied to the hot roll to insure reliable release of the toner image which is being fused to a sheet of paper, and where the fuser is used to fuse different size paper, for example 11 inch and 14 inch long paper, the life of the fuser roll is increased by a critical selection of elastomer and fuser hardware parameters. Thermal conductivity of the roll's elastomer is controlled to a value of four (BTU-In/Ft2 - Hr - oF) by the addition of fillers.

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

Controlling Fuser Roll Life And Failure Mode

      In a wet release, high thermal conductivity hot roll
xerographic fuser, where a polydimethyl siloxane release agent is
applied to the hot roll to insure reliable release of the toner image
which is being fused to a sheet of paper, and where the fuser is used
to fuse different size paper, for example 11 inch and 14 inch long
paper, the life of the fuser roll is increased by a critical
selection of elastomer and fuser hardware parameters.  Thermal
conductivity of the roll's elastomer is controlled to a value of four
(BTU-In/Ft2 - Hr -  oF) by the addition of fillers.

      This long-life fuser roll is provided by using a fluorosilicone
elastomer, having
      (1)  an abrasion resistance value equal to or less than
      2.0 grams/1000 copy paper cycles.  Abrasion resistance
      is preferably measured with a Tabor Abraser, using H-18
      wheels and 375 gram load.
      (2)  a hardness less than durometer 70,
      (3)  a thickness greater than 0.065 inch, and by using the roll
in a fuser hardware assembly which applies a load to the elastomer
which is equal to or greater than 20 lbs./sq.  inch.

      Preferably, the roll is flipped end for end about every 125,000
copy paper cycles.

      Disclosed anonymously.