DEVELOPING CARTRIDGE FOR LASER PRINTER

摘要

A developing cartridge for laser printer, including a toner container, an agitating member, a toner feeding roller, a developing roller, a regulating blade for regulating the thickness of toner layer and a photosensitive drum which are all disposed on the frame of the developing cartridge. There is an orientation concave disposed on the frame of the developing cartridge. On the axis of the photosensitive drum, the width of the orientation concave is far more wider than the width of the orientation protrusion disposed on the laser printer, and one end wall of the orientation concave and the corresponding wall of the orientation protrusion are against to each other.