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EVAPORATION PAPER FLATTENER

IP.com Disclosure Number: IPCOM000023943D
Original Publication Date: 1979-Apr-30
Included in the Prior Art Database: 2004-Apr-01

Publishing Venue

Xerox Disclosure Journal

Abstract

In copying machines, the application of heat and pressure in the fusing process can often cause the fused copy to assume curled or irregular shapes. The shapes are caused essentially by relaxing the internal stresses, established in the paper manufacture, which held the paper flat. Correcting these undesirable shapes can be accomplished by raising the moisture content of the paper with a device, such as a humidifier located in the paper path downstream of the fuser and holding the paper flat throughout the drying process. This relieves the new stress state which caused the curl and allows the development of the original internal stress which holds the paper flat.