| 摘要 |
An image forming device has an image regulating structure including a thickness-regulating blade that makes contact with a developing roller. Toner applied to the developing roller passes between the layer thickness-regulating blade and the developing roller to form a thin toner layer on the developing roller. The amount of toner allowed to pass between the layer thickness-regulating blade and the developing roller is controlled by having the coefficient of friction between the blade and the toner greater than the coefficient of friction between the developing roller and the toner and by applying an electric force field from the blade to the developing roller. The application of the electric force effectively increases the coefficient of friction between the developing roller and toner to a degree to pass the thin layer of toner between the layer thickness-regulating blade and the developing roller.
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