An image forming apparatus including a latent electrostatic image bearing member, a latent electrostatic image forming unit, a developing unit, a transfer unit and a fixing unit, wherein the fixing unit includes rotatable heating member heating the recording medium having the unfixed visible image, rotatable pressing member coming into contact with the rotatable heating member to form a nip portion, and an air separation member separating the recording medium from the rotatable heating member by air, the toner including toner base particles each including binder resin and releasing agent, the binder resin including crystalline polyester resin and non-crystalline resin, and ratio of W/R being 0.045 to 0.85, where W denotes peak height in spectrum of the crystalline polyester resin, R denotes peak height in spectrum of the non-crystalline resin, and each of the spectra is measured by total transmission method (KBr method) using Fourier transform infrared (FT-IR) spectrometer.