Electrical contact device for a developer roller

Abstract

Electrical contact devices for supplying a bias voltage to a developer roller and a primary charge roller of a toner cartridge used in an image forming system. The electricity may be communicated through electrical contact devices with or without modular inserts, using spring wires, flat springs, coil springs, unicorn springs, endfelt seals that also act as bias voltage contacts, magnetic seals that also act as bias voltage contacts, insulator spacers that also act as bias voltage contacts, scraper devices that also act as bias voltage contacts, and two legged spring contacts. Also, improved endfelts may be made using a combination of foam that has been flocked or with a surface of fibers that simulates a velvet surface and even a conductive flocking where the endfelt seal may act both as a seal and also an electrical contact. Also, magnetic seals which are hard and previously spaced a fixed distance from the developer roller may be flocked to allow the developer roller to come closer where the flock surface will act softly to protect the surface of the developer roller. Also, the developer roller may be directly flocked near the ends, where the endfelts would set the spacing between the developer roller and the photoreceptor, instead of using prior art insulator spacers or insulator bushings to set the spacing therebetween.