an electrophotographic image forming apparatus includes a toner image forming section , a recording material storing section , a sheet feeding and conveying section provided sideward of the recording material storing section , a toner reservoir section provided on a side opposite to the sheet feeding and conveying section , a toner separation section provided upward of the developing device to separate the toner , a supply pipe for interconnecting the toner reservoir section and the toner separation section to supply the toner , a collection pipe for interconnecting the toner reservoir section and the toner separation section to collect the toner , a first fluid conveyance device provided on the supply pipe between the toner reservoir section and the toner separation section for conveying a supply fluid , and a second fluid conveyance device provided on the collection pipe between the toner reservoir section and the toner separation section for conveying a collection fluid .