Toner supply device

A toner supply device configured to supply toner contained in a toner container to a developing device in an image forming device, comprising:

• a conveyance pipe being connected to the toner container, the conveyance pipe conveying the toner from the toner container to the developing device;
• at least one supply pipe being configured to supply the toner from the conveyance pipe downward to the developing device, the at least one supply pipe having an upper portion connected to the conveyance pipe and a lower end configured to advance into the developing device, the at least one supply pipe having a center axis of the supply pipe slanted relative to the horizontal line at a repose angle of the toner or more, the at least one supply pipe having a shutter mechanism prohibiting and allowing the toner to be supplied to the developing device;
• and
• a conveyance member being rotatably located in the supply pipe, the conveyance member conveying the toner downward.

An image forming device comprising;

• an image forming unit being configured to forming a toner image and being configured to transfer the toner image onto a transfer medium;
• a sheet conveyance unit being configured to convey the transfer medium to the image forming unit;
• and
• a toner supply unit being configured to supply toner to the image forming unit, the toner supply unit including
• a toner supply member being configured to supply toner to the image forming unit,
• a toner container being configured to store toner, and
• a toner conveyance unit having a toner conveyance member inside being configured to convey the toner in the toner container to the toner supply member, the toner conveyance unit having a portion upstream in a toner conveyance direction that is lower than a portion thereof that is downstream in the toner conveyance direction.