Image forming apparatus which a developing roll is capable of contacting with and spacing from

摘要

The present invention provides an image forming apparatus that has an image bearing member a charger for charging the image bearing member image forming means for selectively erasing charge on the image bearing member to thereby form an electrostatic image a developing device for developing the electrostatic image, the developing device including a developing roll contacting with the image bearing member and having a developing bias applied thereto and contacting and spacing means for contacting and spacing the developing roll with respect to the image bearing member the contacting and spacing means contacting the developing roll having the developing bias applied to the area thereof charged by the charger with the image bearing member at a start of image formation.