Terephthalic Acid → Cyclohexanedimethanol

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As a thermoplastic resin there was used a 5:4:1 (by mole) of terephthalic acid, bisphenol A-ethylene oxide adduct and linear polyester obtained from cyclohexane dimethanol (Tg: 62° C.; Mn: 4,500; Mw: 10,000). To 100 parts by weight of this thermoplastic resin were then added 5 parts by weight of benzidine yellow as a colorant for yellow toner, 4 parts by weight of pigment red as a colorant for magenta toner, 4 parts by weight of phthalocyanine blue as a colorant for cyan toner or 5 parts by weight of carbon black as a colorant for black toner. These mixtures were each then heated and melt-mixed in a Banbury mixer, ground using a jet mill, and then classified using an air classifier to prepare a particulate material having d50 of 7 μm.

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