Electrostatic image forming apparatus with fluororesin in fixing roller layer

   
   

An image forming apparatus forms an electrostatic latent image corresponding to an image information signal on an image carrying member, develops the electrostatic latent image using a two component developer of toner particles and carrier particles and transfers the unfixed image to a transfer medium. A fixer is provided with at least a fixing roller and a press roller which nips and delivers the transfer medium to fix the unfixed image. The carrier particles contain a binder resin and magnetic metal oxide and have shape factors SF-1 of 100 to 150 and SF-2 of 100 to 150. The fixing roller has an elastic layer and a release layer of a fluorine resin having an Asker-C hardness between 60.degree. and 85.degree. at the time of application of a 1 kg load.

 
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