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PUDDLE LIMITING WICK OIL DISPENSING DEVICE

IP.com Disclosure Number: IPCOM000025102D
Original Publication Date: 1983-Aug-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 108K

Publishing Venue

Xerox Disclosure Journal

Abstract

Release agent management (RAM) systems are utilized in silicone rubber nip forming fusers to apply the release agent in sufficient quantities to maintain the release properties of the rubber. The RAM system also influences the condition of the roll in other ways. Excess silicone oil causes the roll to soften and swell. Lack of silicone oil causes the roll to harden and compact in size. Wick oil management systems in certain machines contact the fuser roll in standby and during run. When the wick media contacts the roll during standby, an oil puddle develops. This oil puddle supplies a source to replenish any oil deficient areas of the roll through diffusion. This standby diffusion helps to assure that the oil state in the roll is maintained to a level consistent with release requirements. The size of the oil puddle is strongly influenced by the concentration of the oil in the wick media. A reasonable balance can be reached between the standby and the run oil condition by limiting the cover wick concentration.

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XEROX DISCLOSURE JOURNAL

PUDDLE LIMITING WICK OIL DISPENSING DEVICE Thomas F. Szlucha

Proposed Classification US. CI. 355/3FU
Int. C1. G03g 15/00

J2

Release agent management (RAM) systems are utilized in silicone rubber nip forming fusers to apply the release agent in sufficient quantities to maintain the release properties of the rubber. The RAM system also influences the condition of the roll in other ways. Excess silicone oil causes the roll to soften and swell. Lack of silicone oil causes the roll to harden and compact in size. Wick oil management systems in certain machines contact the fuser roll in standby and during run. When the wick media contacts the roll during standby, an oil puddle develops. This oil puddle supplies a source to replenish any oil deficient areas of the roll through diffusion. This standby diffusion helps to assure that the oil state in the roll is maintained to a level consistent with release requirements. The size of the oil puddle is strongly influenced by the concentration of the oil in the wick media. A reasonable balance can be reached between the standby and the run oil condition by limiting the cover wick concentration.

Volume 8 Number 4 July/August 1983 34 1

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PUDDLE LIMITING WICK OIL DISPENSING DEVICE (Cont'd)

In a higher volume duplicator application, in order to achieve good long run release performance, it is necessary to increase the wick media oil concentration. This is done to increase the nominal oil dispensing rate. These high oil concentrations are inconsistent with the concept of leaving the wick in standby to maintain the state of the rubber. The high concentrations develop large puddles which, given several stop-start short runs, deplete the wick of oil. This reduces the concentration to a level such that the oil dispensing rate necessary to maintain release during a long run is not maintained. A low oil concentration is needed for standby and a high oil concentration...