TONER Russian patent published in 2014 - IPC G03G9/87 

FIELD: chemistry.

SUBSTANCE: toner contains toner particles, each of which contains binding resin and a colouring substance, in which the binding resin includes resin, which has an endothermic peak at a temperature from 55°C to 120°C on the DSC curve; the toner has a temperature of softening from 90°C to 140°C; in viscoelastic characteristics of the toner, measured at a frequency of 6.28 rad/s, the dynamic module of elasticity at a temperature of 180°C constitutes from 1.0×10² Pa to 1.0×10⁴ Pa; on a graph with the temperature on the x axis and the tangent of a loss angle tanδ on the y axis tanδ has a peak with the maximum in the temperature interval from 50°C to 70°C; tanδ(P) at a temperature of the maximum constitutes from 2.0 to 10.0; a ratio of tanδ(P) at the temperature of the maximum to tanδ(Tm) at the temperature Tm (tanδ(P)/tanδ(Tm)) is in the range from 2.5 to 8.0.

EFFECT: obtaining the toner which prevents the edge shift and provides high and uniform lustre.

3 cl, 5 tbl, 1 dwg, 1 ex