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Repulping of toner-printed paper produces a slurry of toner particles and fiber from which the toner can be more easily removed. It has been shown that the ability to remove the toner is affected by the size and shape of toner particles. Their size and shape is determined to an extent by the fracture of toner that results from paper swelling. In this work, a composite consisting of a toner polymer on cellulose acetate has been developed to simulate toner on paper. By modeling this system as a bilayer beam, the stresses developed in this composite upon immersion in water have been quantified. The stress in the composite at the time that toner fracture occurs will be used to calculate the fracture energy of the toner.
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Fracture Stress in Xerographic Toner on a Swelling Substrate, 1997 Recycling Symposium Proceedings