The image forming apparatus and method having a waste toner recycling waste toner recycling means is disclosed. The disclosed image forming apparatus includes a photosensitive unit , the waste toner passage to store the waste toner removed from the photosensitive unit , the waste toner stored in the waste toner to be used again for developing an electrostatic latent image formed on the photosensitive unit, a photosensitive unit formed on the electrostatic and the waste toner developing device for developing an electrostatic latent image by supplying a waste toner to the latent image , the waste toner from the waste toner sump means for recycling comprises a conveying device for conveying the waste toner in the waste toner developing device ; comprises
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