Patent ID: 6845220
Filing Date: 2005-01-18
Classification: G03G

Abstract:
1. A development device having a developing gap detection function, comprising: an organic photoconductive body to form an electrostatic latent image; a developer conveying body to rotate opposite to the organic photoconductive body and to add a developer to the electrostatic latent image formed on the organic photoconductive body to form a visible image; a power supply unit to supply a voltage to the organic photoconductive body and the developer conveying body; a discharge start voltage detection portion to detect a discharge start voltage occurring between the developer conveying body and the organic photoconductive body when the voltage is supplied from the power supply unit in increments at predetermined intervals; and a controller to obtain a developing gap between the organic photoconductive body and the developer conveying body based on the discharge start voltage detected by the discharge start voltage detection portion.