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AssigneeFuji Xerox Co., Ltd.
InventorsYasuhiro Oya, Susumu Yoshino, Masanobu Ninomiya, Hirokazu Hamano, Kaori Oishi, Tetsuya Taguchi, Koutarou Yoshihara
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Provided is a toner having good offset resistance and capable of giving non-glaring, high-quality images with high OHP transparency, and a method of image formation with it. The toner includes at least a binder resin, a colorant and a wax. The THF soluble component of the toner, as analyzed through gel permeation chromatography, has a number-average molecular weight falling between 2500 and 5500, a weight-average molecular weight falling between 13000 and 25000, and a peak molecular weight falling between 5000 and 15000, and contains a fraction having a molecular weight of at least 105 in a ratio of at most 10% by weight of the component and a fraction having a molecular weight of at least 104 in a ratio of from 30 to 70% by weight of the component, and the wax in the toner has a DSC endothermic peak falling between 50 and 120° C.
A toner comprising a binder resin, a colorant and a wax, the toner having a THF soluble component, as analyzed by gel permeation chromatography, the THF soluble component having a number-average molecular weight falling approximately between 2500 and 5500, a weight-average molecular weight falling approximately between 13000 and 25000, and a peak molecular weight falling approximately between 5000 and 15000, the THF soluble component having a component of molecular weight of at least approximately 105 in a ratio of at most approximately 10% by weight of the THF soluble component and having a component of molecular weight of at least approximately 104 in a ratio of approximately from 30 to 70% by weight of the THF soluble component, and the wax having a DSC endothermic peak falling approximately between 50 and 120° C.
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