Patent ID: 6874546

Claim:
A toner container filling device for filling a toner container with toner, the toner container, when included in an image forming apparatus, supplying the toner to form an image, the toner container filling device comprising: a toner storage section configured to store the toner, the toner storage section having an air feeding entrance for feeding air thereinto, and the air fed thereinto fluidizing a portion of the toner stored therein; a toner container filling section configured to take the fluidized toner in from the toner storage section and pump the toner to the toner container; a measurement unit configured to measure the weight of the toner container and output weight data of the toner container; and a control section configured to calculate the weight of the toner pumped into the toner container using the weight data of the toner container output from the measurement unit, the control section controlling the toner container filling section to start pumping toner into the toner container when the toner container is empty, and stop the toner container filling section from pumping toner into the toner container when the toner container is fully filled with the toner.