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US 5,347,303 AGranted
Full color xerographic printing system with dual wavelength, single optical system ROS and dual layer photoreceptor
AssigneeXerox Corporation
InventorsGregory J. Kovacs, G. A. Neville Connell
Life of this patent
Estimating the term…
Abstract
A full color xerographic printing system, either double pass or single pass, with a single polygon, single optical system Raster Output Scanning (ROS) system has a dual wavelength laser diode source for the ROS which images the dual beams at a single station as closely spaced spots or at two stations as closely spaced spots on a dual layer photoreceptor with each photoreceptor layer sensitive to or accessible by only one of the two wavelengths.
Claims16
A full color xerographic printing system comprising:
- a raster output scanner optical system for generating at least one first modulated beam at a first wavelength and at least one second modulated beam at a second wavelength, said second wavelength being different from said first wavelength,
- a photoreceptor means having a first layer and a second layer, said first layer being sensitive or accessible only to said first wavelength and said second layer being sensitive or accessible only to said second wavelength, and
- xerographic means for charging said photoreceptor means, said xerographic means then exposing areas of said photoreceptor means to neither modulated beam, said first modulated beam, said second modulated beam, or both first modulated beam and second modulated beam, and, after exposure, said xerographic means depositing different color toners on said photoreceptor means in response to exposure of said areas of said layers to said modulated beams, whereby said different color toners produce black and white and all six of the primary colors.
Dependencies are inferred from the claim text.