Canon Kabushiki Kaisha

Megumi Ikeda

Hiroyuki Fujikawa

Takeshi Hashimoto

Nozomu Komatsu

Ichiro Kanno

Masayuki Hama

Yuto Onozaki

Takakuni Kobori

Hitoshi Sano

Akifumi Matsubara

Hayato Ida

A toner having chargeability and fluidity that do not change to a great extent is provided. The toner includes toner particles containing a binder resin and includes inorganic fine particles A, wherein the shape factor SF-2 of primary particles of the inorganic fine particles A is 116 or less, and regarding the particle size distribution on a volume basis of the inorganic fine particles A on the toner particle surfaces, the particle diameter when a cumulative value from the small particle side reaches 16% by volume is denoted as D16, the particle diameter when a cumulative value reaches 50% by volume is denoted as D50, and the particle diameter when a cumulative value reaches 84% by volume is denoted as D84, D50 is 80 nm or more and 200 nm or less, and the particle size distribution indicator A represented by D84/D16 is 1.70 or more and 2.60 or less.

Toner

A toner including: a toner particle, wherein the toner particle contains a binder resin, a compound represented by formula (1) below, and a compound in which at least a compound represented by formula (2) below and a compound represented by formula (3) below are in solid solution. In formula (1), R, R, R, and Reach independently represent an alkyl group or aryl group, and Rand Reach independently represent an aryl group, acyl group, or alkyl group, or Ris bonded to Rto form a cyclic organic functional group that contains R, R, and the nitrogen atom to which Rand Rare bonded. 

According to the present invention, in a toner including a toner particle containing a binder resin and a low molecular aromatic hydrocarbon, the binder resin contains a polyester resin, at least one kind of a unit derived from an aromatic monocarboxylic acid and a unit derived from an aromatic monoalcohol is contained, and the low molecular aromatic hydrocarbon has 1 or more and 4 or less benzene rings, and has a melting point of 60&#xb0; C. or more and 120&#xb0; C. or less.

Provided is a toner including a toner particle that contains a toner base particle containing a binder resin and a wax, and a coating layer containing a 1,2-polybutadiene resin at the surface of the toner base particle, wherein the coverage ratio of the toner base particle by the coating layer is at least 50%.

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Kashiwa, Japan

Megumi Ikeda