Carrier having specified bet specific surface area and dynamic current value and two-component developer thereof

A two-component developer comprising:

• a magnetic carrier having a BET specific surface area in a
• rang of 0.50 to 2.00 m2/g and a dynamic current value in a range of 15 to 170 nA;
• and
• a negatively chargeable toner.

A manufacturing method of a magnetic carrier comprising:

• melt-kneading magnetic particles having an average primary particle size in a range of 0.01 to 1 μm and a resin;
• pulverizing the resulting kneaded material;
• and
• sintering the resulting pulverized particles;
• wherein, the magnetic carrier has a BET specific surface area of 0.50 to 2.00 m2/g and a dynamic current value in a range of 15 to 170 nA.