Development method and apparatus
AssigneeXerox Corporation
InventorsRobert W. Gundlach, Richard F. Bergen
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Abstract
In the development of xerographic images wherein the latent image is in the form of a periodic charge pattern, polar or polarizable toner particles are employed. It is desirable to utilize a development system that will bring the polar or polarizable toner into contact with the periodic charge pattern without triboelectrically charging the particles. To achieve this aim, an apparatus and method are described for moving the polar or polarizable toner particles through a development zone at substantially the same speed and in the same direction as that of the imaging member.
Claims17
A method of developing a latent electrostatic nonuniform charge pattern on an imaging member with polar or polarizable toner particles which comprises defining a development zone for the deposition of the toner particles on the imaging member in image configuration, moving the imaging member containing said nonuniform charge pattern through said development zone, moving a blanket of toner particles through said development zone in the same direction as that of the imaging member and at a speed substantially equal to that of the imaging member, the thickness of said blanket of toner being such that toner particles forming the toner blanket are captured by the nonuniform charge pattern.
In an electrostatographic recording apparatus including an imaging member that moves through a plurality of processing stations said imaging member having thereon a nonuniform charge pattern in image configuration, the improvement comprising a development means, said development means together with said imaging member defining a development zone where polar or polarizable uncharged toner particles are deposited on said nonuniform charge pattern present on said imaging member, said development means including a toner transport means for moving said uncharged toner through said development zone at a rate substantially equal to the rate at which said imaging member moves through said plurality of stations.
Dependencies are inferred from the claim text.