To provide a developing device capable of attaining stable quality in printing.

The device is provided with a toner carrying roller 6 for controlling the shaft 20 of a developing roller 7 so that the shaft 20 may be freely moved to come close to a photoreceptor drum 3 or separate from the drum 3, and also, for applying a pressurizing force on the developing roller 7 so that the roller 7 may come into contact with the photoreceptor drum 3, on the other hand, for absorbing the pressurizing force when the pressurizing force is applied from the developing roller 7.