Electrophotography – Diagnostics – By inspection of copied image
Reexamination Certificate
2007-07-03
2007-07-03
Grainger, Quana (Department: 2852)
Electrophotography
Diagnostics
By inspection of copied image
Reexamination Certificate
active
11020504
ABSTRACT:
An input image capture device, capable of sampling the color density and gloss of the fused printed image (thus not requiring the printing of density patches on a separate calibration page), may compare the printed image's color density and gloss to a predicted value. Then, appearance control may be achieved by changing fuser parameters (such as fuser nip width, fuser roller temperature and the like) and other electrophotographic element control parameters (such as exposure, off-set development voltage, charger voltage and the like) to maintain a desirable constant appearance (density, gloss, etc.) of images consistently in print engine usage (within a print run and between print runs), even if different media substrates are used on the same print job. Therefore, no waste calibration sheet is needed, and a print job operator may receive more timely feedback relating to the current printing job stream.
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Yee Ng et al., “Gloss Uniformity Attributes fro Reflection Images”, NIP17: International Conference on Digital Printing Technologies, pp. 718-722.
Eastman Kodak Company
Grainger Quana
Kessler Lawrence P.
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