Image forming apparatus

An image forming apparatus, comprising:

• an electrophotographic photoreceptor that includes a photosensitive layer and an overcoat layer on an electroconductive substrate in this order;
• a charge unit that charges a surface of the electrophotographic photoreceptor;
• an electrostatic latent image forming unit that forms an electrostatic latent image on a charged surface of the electrophotographic photoreceptor;
• a developing unit that contains a developer containing a toner, and develops the electrostatic latent image formed on the surface of the image holding member with the developer so as to form a toner image;
• a transfer unit that transfers the toner image to the surface of the recording medium;
• a cleaning unit that includes a cleaning blade, a tip of which contacts with the electrophotographic photoreceptor;
• and
• a fixing unit that fixes the toner image transferred on the recording medium,
• wherein the toner contains a toner particle which contains a binder resin containing a crystalline polyester resin, a colorant and a release agent, and an external additive, and the toner satisfies the following Expression (1):
• 2≦tan δP1≦2.5 (1)
• wherein tan δP1 represents a maximum value of a mechanical loss tangent existing in a range where a complex elastic modulus is from 1×106 Pa to 1×108 Pa, which is measured at an angular frequency of 6.28 rad/sec and a strain amount of 0.3%.