| 摘要 |
An electrographic developing apparatus having incorporated therein a toner supply device by which the toner concentration of the developer accommodated in a developer container can be maintained at a constant value substantially without requiring any toner concentration detector. The device has a toner tank having a bottom adapted to be contacted by the developer contained in a toner supply section of the container, and a developer moving device for forcibly moving a portion of the developer contained in a developing section of the container into the toner supply section when replenishing toner is dispensed from the tank. |
