| 摘要 |
PROBLEM TO BE SOLVED: To provide a toner capable of stably providing high-quality images even after being left in a severe environment.SOLUTION: A toner includes toner particles containing a charge control agent and a binder resin. In the adsorption-desorption isothermal curve of Nmolecules at a temperature of 77K, the charge control agent has an adsorption amount M1 of 3.0 or more and 8.0 or less in an adsorption process when the relative pressure p/pis 0.4, and has a difference (M2-M1) between M1 and an adsorption amount M2 (cm/g) in the desorption process when the relative pressure p/pis 0.4 is 0.4 or less. The charge control agent contains a pyrazolone mono azo metal complex compound. |
