Abstract: A spring-contact device which prevents the primary charge roller of a toner cartridge assembly from shifting back and forth and aids in providing the roller with an electrostatic charge. The device is made from a thin piece of electrically conductive material and comprises a long portion and a short portion bent from the long portion at an approximately right angle. The short portion has a hole in it for fitting over the hub on the charge roller mount in the toner cartridge assembly. The long portion presses against an endpost of the roller, maintaining a spring-contact. A spring-contact device is placed at each end of the charge roller such that the roller is held between the long portions of the spring-contact device by opposing forces.