Patent ID: 7634222

Claim:
An electrophotographic marking apparatus comprising: a fusing station, a finishing or collection station, and an oil dispensing system that is configured to be positioned after said fusing station but before said finishing station, said oil dispensing system configured to directly dispense oil to a printed sheet to be treated or media having thereon a fused toned image, said oil configured to increase the fix performance of said fusing station before said printed sheet enters said finishing station, said oil dispensing system comprising a unit comprising a cam and cam shaft, an oil tank housing, a mechanical cam oil flow controlling component within said housing with a wick enabled to dispense oil directly to an applicator roll, said applicator roll configured to directly contact said sheet to be treated, said wick located at a bottom portion of said oil tank housing below at least one oil port and above said applicator roll, said at least one oil port distributed along a width and length of said wick, a plunger bar having oil port blocks mounted thereon, said plunger bar configured to have an up and down movement, said up and down movement of said plunger bar and said cam is governed by a rotation of said cam shaft and said cam, said applicator roll configured to apply oil to at least one surface of said printed sheet, said controlling component having said cam which has a tear drop profile and configured when in an upper position to open said ports to dispense oil therefrom and configured when in a lower position to close said ports by said oil port blocks to prevent the flow of oil therethrough, said cam configured when rotated to contact said oil port block when in said lower position to thereby block said oil port and flow of oil therefrom.