Curl prevention method for high TMA color copiers
AssigneeXerox Corporation
InventorRabin Moser
Life of this patent
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Abstract
Apparatus and method of preventing the curling of a substrate having toner images electrostatically adhered thereto which substrate has been subjected to heat for the purpose of fixing the toner images to the substrate. Simultaneous constraint of the copy substrate and the application of moisture thereto is effected by passing the substrate through the nip formed by two pressure engaged rollers, one of which is utilized for applying the water to the back side of the substrate as the substrate passes through the aftermentioned nip.
Claims9
Fuser apparatus, said apparatus comprising:
- a heated roll structure;
- a pressure roll structure cooperating with said heated roll structure to form a nip through which copy substrates pass with toner images carried thereby containing said heated roll structure;
- a supply of liquid;
- means supported down stream of said heated and pressure roll structures for applying said liquid to the substrates by direct contact therewith;
- and
- means for constraining a substrate during application of said liquid.
A method of preventing curling of substrates to which toner images have been fixed using heat, said method including the steps of:
- providing a heated roll structure;
- providing a pressure roll structure cooperating with said heated roll structure to form a nip through which copy substrates pass with toner images carried thereby contacting said heated roll structure;
- applying liquid by directly contacting one surface of a substrate;
- and
- physically constraining said substrates during application of said liquid.
Dependencies are inferred from the claim text.