Developing agent and image forming apparatus

An image forming apparatus comprising:

• an image carrier;
• a developing device provided opposite to said image carrier and containing a developing agent which contains a binder resin, a magnetic particle, rutile/anatase mixed crystal type titanium oxide treated to have hydrophobicity, and silica treated to have hydrophobicity, said developing device forming a developing agent image by developing an electrostatic latent image formed on said image carrier by using said developing agent;
• a transfer device for transferring the developing agent image onto a transfer medium;
• and
• a fixing device for fixing the developing agent image transferred to said transfer medium.

An image forming method comprising:

• an electrostatic latent image formation step of forming an electrostatic latent image on an image carrier;
• a developing step of developing an electrostatic latent image formed on said image carrier by using a developing agent containing a binder resin, a magnetic particle, rutile/anatase mixed crystal type titanium oxide processed to have hydrophobicity, and silica processed to have hydrophobicity, and obtaining a developing agent image;
• a transfer step of transferring the developed developing agent image onto a transfer medium;
• and
• a fixing step of fixing the developing agent image, transferred to said transfer medium, on said transfer medium.