Abstract
This chapter discusses toners, their components, and the manufacturing methods. Toners are used in various processes for forming and printing images. They contain a primary or binder resin, known as a toner resin, such as a thermoplastic resin, a colorant such as a dye or pigment, and a charge control agent, releasing agents, and other additives. The heterogeneity of the toner particles in the composition is believed to be the root cause of numerous problems throughout the serviceable life of toner in a printing device. An increasing demand for printing and duplication causes the production of multiple waste toner cartridges. Waste toner cartridges contain valuable metals, plastics, and toxic residual toner. Thus, waste toner cartridge recovery is meaningful from waste treatment and environmental protection viewpoints.
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