BACKGROUND

An image forming apparatus using an electrophotographic method forms a visible toner image on a photoconductor by supplying toner to an electrostatic latent image formed on the photoconductor, transfers the toner image to a print medium directly or through an intermediate transfer medium, and then fuses the transferred toner image onto the print medium.

A development cartridge accommodates the toner and supplies the toner to the electrostatic latent image formed on the photoconductor to form the visible toner image. When the toner accommodated in the development cartridge is exhausted, the development cartridge may be replaced with a new development cartridge or the development cartridge may be refilled with toner.

