Patent ID: 9354555
Filing Date: 2016-05-31
CPC Classification: G03G

Claim Text:
1. A toner supplying device having a toner cartridge attached to an upper part thereof and a storage tank in which toner supplied from the toner cartridge is stored temporarily and discharging the toner from a toner discharge port provided in a lower end of the storage tank, wherein a conveyance screw for discharging the toner stored in the storage tank temporarily to the toner discharge port is provided inside the storage tank, and the storage tank has a shaft support hole for supporting a shaft of the conveyance screw that coincides with a rotational center axis of the conveyance screw and the shaft support hole is formed as a long hole in which the shaft is able to be displaced in one direction or a direction opposite to the one direction, wherein a driving portion for rotationally driving the conveyance screw is included, a driving gear that is driven by the driving portion and a driven gear attached to the shaft are engaged to rotationally drive the conveyance screw, and rotation of the driving gear allows a position of the shaft supported in the long hole to be displaced.