Patent ID: 8150275

Claim:
A toner cartridge comprising: a toner container which contains toner; a lid which is connected to an upper part of the toner container; a toner supplying opening which supplies the toner; an agitating member which agitates the toner; a conveying member which conveys the toner toward the toner supplying opening; a first gear which is provided on an exterior portion of the toner container and rotates the agitating member; a second gear which is provided on the exterior portion of the toner container and rotates the conveying member; a cylindrical body which projects from the first gear concentrically connected to the first gear and has a plurality of light incident parts on a circumference, an outer diameter of the cylindrical body being smaller than an outer diameter of the first gear; and a gear cover which covers at least part of the first gear and the second gear.