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ARRAY BASED SENSOR TO MEASURE SINGLE SEPARATION OR MIXED COLOR (OR IOI) PATCHES ON THE PHOTORECEPTOR USING MEMS BASED HYPERSPECTRAL IMAGING TECHNOLOGY

  • US 20080080027A1
  • Filed: 09/26/2006
  • Published: 04/03/2008
  • Est. Priority Date: 09/26/2006
  • Status: Active Grant
First Claim
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1. A method of calibrating a marking engine that includes a photoreceptor transfer device having at least a first area on a surface of the photoreceptor transfer device, the at least first area receiving at least one color of marking material that is a portion of an image, the photoreceptor transfer device conveying the marking material to at least one of another transfer device or an output substrate, the method comprising:

  • configuring Fabry-Perot cells within a Fabry-Perot array to form a desired light filter pattern;

    disposing at least one toned patch in a second area of the photoreceptor transfer device, the second area being a margin area located on the surface of the photoreceptor transfer device; and

    illuminating the disposed toned patch or image on the photoreceptor transfer device;

    filtering light reflected from the toned patch or image through the Fabry-Perot array;

    measuring the filtered light received from different Fabry-Perot cells within the Fabry-Perot array to obtain measured spectral information values for the toned patch or image in response to the illumination; and

    performing a color calibration for use in a marking operation based on the measured spectral information values.

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