Pinch roll for a release material delivery system

Photocopying – Contact printing – Light boxes

Patent

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Details

100160, 226187, 226197, 2426152, 492 27, G03G 1520

Patent

active

054206782

ABSTRACT:
A fuser apparatus for heat fusing toner images to print substrate comprising an elongated fuser roll and an elongated pressure roll. The pressure roll is supported for pressure engagement with the fuser roll to form a nip therebetween adapted to receive substrates. An oil impregnated web material and an elongated pinch roll are provided. The pinch roll has an outer surface mounted against the web material to urge the web material into contact with the fuser roll to apply release material to the fuser roll. The outer surface includes a first portion having a diameter and a length, a second portion having a diameter and a length, and a third portion having a diameter and a length. The first portion diameter is greater than the second and third portion diameter. The first portion, second portion and third portion are spaced along the axis of the pinch roller. The second portion and third portion are located at opposite ends of the pinch roll. The first portion adjoins between the second portion and the third portion, thereby when the pinch roll is mounted against the web material into contact with the fuser roll to apply release material to the fuser roll a lesser amount of release material is applied to the fuser roll where the second and third portion is mounted against the web material into contact with the fuser roll.

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