| 摘要 |
In a developing device for an image forming device, such as a laser printer, a supply roller is in rolling contact with and supplies toner particles to a developing roller which in turn is in rolling contact with a photosensitive drum and supplies toner particles to an electrostatic latent image formed thereon. The developing roller and the supply roller press against each other with a slight pressure. The supply roller has a resilient outer form layer formed from a silicone foam or urethane foam and fluororesin particles are dispersed within the foam. With the dispersion of the fluororesin particles throughout the resilient outer form layer of the supply roller, toner particles can be better charged by contact between the resilient outer foam layers of the supply roller and the developing roller. As a result, improper image development is less likely to occur and the developing roller will not scratched or otherwise damaged.
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