Toner conveying device, developing device, and image forming device having the same

A developing device for forming a toner image on an image support member provided in an image forming unit of an image forming device, comprising:

• a container for containing toner;
• a developing roller supported in the container for supplying the image support member with toner;
• a spiral member comprising a rotatable shaft provided within the container, and a spiral shaped blade formed on an outer circumference of the shaft, for conveying the toner in a longitudinal direction of the shaft by means of rotation;
• and
• a first toner removing member capable of contacting the surface of the spiral member in order to remove toner attached to the spiral member by means of rotation of the spiral member.

An image forming device, comprising:

• a sheet feeding unit comprising a sheet storage unit that stores sheets to be dispatched therefrom;
• a sheet conveyance unit for conveying a sheet from the sheet feeding unit;
• an image forming unit for forming a toner image on the sheet conveyed from the sheet conveyance unit, the image forming unit comprising an image support member having a surface on which an electrostatic latent image is formed on the basis of image data, and a developing device for forming a toner image on the image support member;
• and
• a fixing unit for fixing the toner image formed on the sheet by the image forming unit;
• the developing device further comprising:
• a container for containing toner;
• a developing roller supported in the container for supplying the image support member with toner;
• a spiral member comprising a rotatable shaft provided within the container, and a spiral shaped blade formed on an outer circumference of the shaft for conveying the toner in a longitudinal direction of the shaft by means of rotation;
• and
• a toner removing member capable of contacting the surface of the spiral member in order to remove toner attached to the spiral member by means of rotation of the spiral member.