Developing device having biasing circuit for charge erasing member

摘要

A developing device for use in an image forming apparatus like a copying machine or printer that develops an electrostatic latent image formed on an electrostatic latent image carrier to obtain a visible image. In the developing device, a toner charge erasing member contacts with the surface of a developing agent carrier and is connected to a power supply which applies developing bias voltage, so that a toner charge erasing bias voltage is applied to the toner charge erasing member from the power supply. A connection circuit provided between the toner charge erasing member and the power supply to maintain a constant electric potential difference between the developing bias voltage and the toner charge erasing bias voltage.