JP2007225967A5 - - Google Patents

Claims (6)

In a toner particle containing at least a binder resin and a colorant, and a toner having at least an inorganic fine powder,
The inorganic fine powder has an average primary particle diameter of 30 to 300 nm, particles having perovskite crystals, and a volume resistance value A (Ω · cm) of the inorganic fine powder of 1.0 ×. A toner characterized by 10 ⁴ ≦ A ≦ 1.0 × 10 ⁹ , and a liberation rate B (number%) with respect to toner particles is 5 ≦ B ≦ 40.   The toner according to claim 1, wherein the inorganic fine powder has a cubic shape and / or a rectangular parallelepiped shape. The toner according to claim 1 or 2 inorganic fine powder is characterized in that a strontium titanate beam.   4. The toner according to claim 1, wherein the inorganic fine powder is added in an amount of 0.1 to 5.0 parts by mass with respect to 100 parts by mass of toner particles. A charging step in which a contact charging means is brought into contact with the electrostatic latent image carrier and charging; an electrostatic latent image forming step in which an electrostatic latent image is formed on the charged electrostatic latent image carrier; and At least a development step of developing with a developer to form a toner image on the electrostatic latent image carrier and a transfer step of transferring the toner image on the electrostatic latent image carrier to an intermediate transfer member or transfer material In the image forming method,
The image forming method according to claim 1, wherein the toner is the toner according to claim 1 . The volume resistivity of the inorganic fine powder A (Ω · cm), when the volume resistivity of the charging member was C (Ω · cm), in claim 5, characterized in that the scope of the following formula The image forming method described.
10 ⁻¹ ≦ A / C ≦ 10