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LOW SURFACE ENERGY OUTPUT SNUFFER ROLL FOR RADIANT FUSERS

IP.com Disclosure Number: IPCOM000025099D
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 71K

Publishing Venue

Xerox Disclosure Journal

Abstract

A difficulty is sometimes experienced in paper wrapping around the upper roll in a pair of output snuffer rolls in a radiant fuser used in an office copier. This is caused by toner offset to the surface of this roll which eventually becomes tacky resulting in paper adherence and wrap. The figure illustrates a typical radiant fuser with upper and lower castings 10, 12, a base heater 14, an upper reflector 18 with lamp and shield 16. The above noted difficulty is minimized by coating the upper output roll 20 of roll pair 20, 22 with a thin layer of a low surface energy material to prevent toner offset to this roll. Typically the coating may be applied by dip coating from solution upon the roll and curing. A typical coating may be of the order of 0.5 to 1.5 mils in thickness and made out of a low surface energy silicone elastomer, for example. The resilient low surface energy coating will also provide excellent paper handling characteristics including the positive feed of paper from the output rolls into the paper tray. In such a system if a weak fluid boundry layer mechanism is operative in the release of toner from the elastomer overcoat it may be replenished by occasional treatment with a silicone oil.

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XEROX DISCLOSURE JOURNAL

LOW SURFACE ENERGY OUTPUT SNUFFER ROLL FOR RADIANT FUSERS Dana G. Marsh
Richard L. Schank

Proposed Classification
U.Si C1. 355/3FA Int. Cl. G03g 15/00

P

I

Volume 8 Number 4 July/August 1983

335

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

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LOW SURFACE ENERGY OUTPUT SNUFFER ROLL FOR RADIANT FUSERS (Cont'd)

A difficulty is sometimes experienced in paper wrapping around the upper roll in a pair of output snuffer rolls in a radiant fuser used in an office copier. This is caused by toner offset to the surface of this roll which eventually becomes tacky resulting in paper adherence and wrap. The figure illustrates a typical radiant fuser with upper and lower castings 10, 12, a base heater 14, an upper reflector 18 with lamp and shield 16. The above noted difficulty is minimized by coating the upper output roll 20 of roll pair 20, 22 with a thin layer of a low surface energy material to prevent toner offset to this roll. Typically the coating may be applied by dip coating from solution upon the roll and curing. A typical coating may be of the order of 0.5 to 1.5 mils in thickness and made out of a low surface energy silicone elastomer, for example. The resilient low surface energy coating will also provide excellent paper handling characteristics including the positive feed of paper from the output rolls into the paper tray. In such a system if a weak fluid boundry layer mechanism is operative in the release of toner from t...