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US 6,188,860 B1Granted
Method and arrangement for developing a plurality of electrostatic images on a substrate
AssigneeAetas Technology Incorporated
InventorChi-Tai Huang
Life of this patent
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AssigneeAetas Technology Incorporated
InventorChi-Tai Huang
Estimating the term…
In the particular embodiment disclosed in the specification, an electrostatic image forming arrangement includes a photoreceptor in the form of a continuous belt which is moved past four development stations each containing a different colored toner which incorporates ferromagnetic material. At each development station a developer roll conveys toner in closely spaced relation to the surface of the photoreceptor and a DC-biased AC voltage is applied to the developer roll to cause the toner to be transferred to an electrostatic image on the photoreceptor. A magnet member mounted on the opposite side of the photoreceptor produces a magnetic field which holds toner on the image-receiving surface permitting a greater range of variation for the DC-biased AC toner transfer voltage.
An image forming arrangement comprising:
An arrangement for developing electrostatic images on an image receiving surface of an image forming member comprising a plurality of spaced developing stations disposed adjacent to the image-receiving surface of the image forming member, a developer roll at each developing station for supplying toner particles containing ferromagnetic material in closely spaced relation to the image-receiving surface, and a magnet member on the opposite side of the image-forming member at each of the developing stations.
A method for developing electrostatic images on an image-receiving surface of an image-forming member comprising supplying a toner containing ferromagnetic material to an electrostatic image on the image-receiving surface and providing a magnetic force to hold the toner on the image-receiving surface.
Dependencies are inferred from the claim text.