| abstract |
Capsular toner with excellent low temperature fixability, high offset resistance, excellent chargeability, high precision character, line and dot, high quality images, small particle size, sharp particle size distribution and spherical toner A toner containing toner particles containing at least polyester (a), a colorant, a wax and a urethane resin (b) containing polyester as a main component, and having a hydroxyl value per 0.5 specific surface area of the toner particles. mgKOH / m 2 or more 10.0mgKOH / m 2 or less, in the measurement by differential scanning calorimetry (DSC) of the toner, and is referred to as the rate of temperature increase of the glass transition temperature measured in 0.5 ℃ / min Tg (0.5) , temperature rise rate When the glass transition temperature measured at 4.0 ° C./min is Tg (4.0), Tg (0.5) is 40 ° C. or more and 60 ° C. or less, and Tg (4.0) -Tg (0.5) is 2.0 ° C. or more and 10.0 ° C. or less. The problem is solved by the toner characterized by the above-mentioned. |