Lexmark International, Inc.

Yao Han

Richard Lee Reel

Brant Dennis Nystrom

Xuan-Chao Huang

Steven Frank Weed

Rebecca Beth Silveston-Keith

An illumination system for a scanner according to one example embodiment includes an array of visible light emitting diodes including a red, a blue and a green light emitting diode and an ultraviolet light emitting device configured to emit light predominantly in the ultraviolet region of the electromagnetic spectrum. During a scan sequence of the red, blue and green light emitting diodes, at least one of the visible light emitting diodes and the ultraviolet light emitting device are positioned to simultaneously illuminate an object being scanned. In one form, during the sequence, the blue light emitting diode and the ultraviolet light emitting device are simultaneously illuminated while in another the red light emitting diode and the ultraviolet light emitting device are simultaneously illuminated.

LED illumination system for a scanner including a UV light emitting device

A method for converting a source gamut of an image to a destination gamut includes providing an imaging apparatus having a plurality of destination gamuts, determining a source gamut boundary for the source gamut of the image; selecting an appropriate destination gamut from the plurality of destination gamuts based on a desired output; mapping to the appropriate destination gamut based at least in part on the source gamut boundary; and determining a color conversion lookup table based on the mapping to the appropriate destination gamut for use in replicating the image to provide the desired output using the imaging apparatus.

Method for converting a source gamut of an image to a destination gamut

An electronic representation of the range of color combinations that can be displayed on the monitor is created and printed. The printed representation is then scanned by the scanner. A relationship is then identified between the monitor and the scanner. This relationship is then used as the basis to determine a relationship between the scanner and the monitor. Compensation is made for errors and the relationship is further developed. Finally, a scanner RGB to printer CMYK lookup table is built.

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Lexington, KY, United States of America

Yao Han