Toner

A toner comprising:

• toner particles,
• wherein a cohesion cluster containing fine silica particles and a binder component is present on surfaces of the toner particles, and the toner further comprises particles of a fatty acid metal salt,
• an arithmetic mean value Ag of a Feret diameter of the cohesion cluster is 1,000 nm or more and 8,000 nm or less,
• a number percentage of toner particles having the cohesion cluster is represented by CI (number %), CI is 1 number % or more and 15 number % or less, and
• a number percentage of toner particles having the cohesion cluster in the toner after being treated under an ultrasonic wave condition A is represented by Ca (number %), and a number percentage of toner particles having the cohesion cluster in the toner after being treated under an ultrasonic wave condition B is represented by Cb (number %),
• CI, Ca, and Cb satisfy formulae (1) and (2):
• ultrasonic wave condition A:
• output frequency 30 kHz, output capacity 0.75 W, and irradiation time 300 s
• ultrasonic wave condition B:
• output frequency 30 kHz, output capacity 25 W, and irradiation time 300 s
• 0.9
• ≤
• Ca
• /
• CI
• ≤
• 1.
• Formula
• ⁢
• (
• 1
• )
• 0.1
• ≤
• Cb
• /
• CI
• ≤
• 0
• ⁢
• .40
• .
• Formula
• ⁢
• (
• 2
• )