Abstract A heated pressure roll fuser system is provided with a wick assembly which comprises a Nomex layer of material, a wool layer of material and a porous wiper pad. The wiper pad engages a heated fuser roll. One face of one end of the Nomex layer contacts the wiper pad, and the same face at the other end of the Nomex layer engages an oil applicator roll which rotates in an oil reservoir laterally spaced from the fuser roll. The wool layer is on top of the Nomex layer and engages the other face thereof. Both the Nomex layer and the wool layer wick oil to the wiper pad where oil passes by gravity through the wiper pad to the fuser roll. The wicking action of the wool layer assures a continuous supply of oil at the fuser roll on long copy runs of a xerographic machine in which it is utilized. The Nomex layer protects the wool from scorching.
In a heated pressure roll fusing system for fusing toner images, a wicking system comprising: an oil reservoir; a heated fuser roll; said reservoir being laterally displaced from said fuser roll; first, second and third members; said first member comprising a heat-resistant, self-lubricated wiper having one face engaging said fuser roll; said second member comprising a heat-resistant porous member of oil wicking characteristic extending between said fuser roll and said reservoir and having a portion of one face thereof engaging the other face of said wiper member; means for directly applying oil from said reservoir to another portion of said one face of said second member; said third member comprising a porous member of a substantially higher oil wicking characteristic and substantially less heat-resistant characteristic than said second member; said third member engaging the other face of said second member from the fuser roll to at least the portion of said second member to which oil is applied.
Claim 2
Dependent Claim
158 words
In a heated pressure roll fusing system for fusing toner images, a wicking system comprising: an oil reservoir; a heated fuser roll; said reservoir being laterally displaced from said fuser roll; first, second and third members; said first member comprising a heat-resistant, self-lubricated wiper having one face engaging said fuser roll; said second member comprising a heat-resistant porous member of oil wicking characteristic extending between said fuser roll and said reservoir and having a portion of one face thereof engaging the other face of said wiper member; means for directly applying oil from said reservoir to another portion of said one face of said second member; said third member comprising a porous member of a substantially higher oil wicking characteristic and substantially less heat-resistant characteristic than said second member; said third member engaging the other face of said second member from the fuser roll to at least the portion of said second member to which oil is applied.
Claim 3
Dependent Claim
32 words
The structure as recited in claim 1 wherein said first member comprises a fluorocarbon polymer; said second member is a copolymer of meta-phenylenediamine and iso-phthaloyl chloride, and said third member is wool.
Claim 4
Dependent Claim
36 words
The structure as recited in claim 2 wherein said oil applying means is an applicator roll located to rotate in said oil reservoir and engages said another portion of said one face of said second member.