| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer conveyance device that uses a positive displacement pump, and can avoid misdetection due to high fluidity of toner and high space ratio.SOLUTION: There is provided a developer conveyance device that conveys a developer by using a positive displacement pump that changes the volume of an internal space to alternately generate positive pressure and negative pressure, and controls the operation of the pump on the basis of a sensor that is installed at the conveyance destination of the developer to detect the presence or absence of the developer, and the developer conveyance device does not detect the presence or absence of the developer with the sensor for a predetermined time from immediately after the stop of the operation of the pump. |
