Image forming apparatus using a developer containing a specific toner

An image forming apparatus comprising:

• an image holding member;
• a charge unit that charges a surface of the image holding member;
• an electrostatic latent image forming unit that forms an electrostatic latent image on a charged surface of the image holding member;
• a developing unit that contains a developer containing toner particles, and develops the electrostatic latent image formed on the surface of the image holding member with the developer to form a toner image;
• an intermediate transfer member of which the toner image is to be transferred to a surface;
• a primary transfer unit that primarily transfers the toner image formed on the surface of the image holding member to the surface of the intermediate transfer member;
• a second transfer unit that secondarily transfers the toner image transferred on the surface of the intermediate transfer member to a surface of a recording medium;
• and
• a guide unit that is provided on an upstream in the rotation direction of the intermediate transfer member from the primary transfer unit, and guides at least one of the image holding member and the intermediate transfer member to a primary transfer position provided by the primary transfer unit such that a portion of the surface of the image holding member and a portion of the surface of the intermediate transfer member are disposed along with each other,
• wherein the toner particles contain a binder resin containing a crystalline polyester resin, a colorant and a release agent, and have an average circularity in a range of 0.955 to 0.971,
• a content ratio of the toner particles having a particle diameter of 4.5 μm or more and less than 7.5 μm and a circularity of 0.980 or more is in a range of 16% by number to 40% by number, and
• a content ratio of the toner particles having a particle diameter of 7.5 μm or more and less than 15 μm and a circularity of 0.900 or more and less than 0.940 is 3% by number or less.