Loading patent…
AssigneeXerox Corporation
InventorsLalit K. Mestha, Peter M. Gulvin, Pinyen Lin, Yao Rong Wang
Estimating the term…
A Micro-Electro-Mechanical System (MEMS) based Fabry-Perot array may be used as a spectral filter to light sensing array, such as a CCD or CMOS photodetector. Applying different voltages to the electrodes of individual Fabry-Perot cells within the array allows a gradient in the Fabry-Perot air gap across the Fabry-Perot array. In this manner the MEMS Fabry-Perot array serves as a spectral filter of light passing through the Fabry-Perot array to the photodetector array. Embodiments of the disclosed sensor, used with LEDs that emit light outside the photosensitivity range of a photoreceptor belt, may be used to measure spectral information from toned patches placed upon a photoreceptor belt within a marking system. Other embodiments of the disclosed sensor, used with LEDs that emit light of any wavelength, may be used to measure spectral information from toned patches placed by a marking system upon a non-photosensitive output substrate, such as an intermediate belt or paper.
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 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:
A system comprising:
Dependencies are inferred from the claim text.