Print proofing using mottling tile

Details Print proofing using mottling tile Print proofing using mottling tile

2008-05-13

2011-10-04

Tucker, Wesley (Department: 2624)

Image analysis

Applications

Document or print quality inspection

C382S163000, C382S254000, C382S266000, C382S275000

Reexamination Certificate

active

08031911

ABSTRACT:
A method for producing mottling in an image includes modifying digital colorant information in a digital image data file for at least one of a plurality of colorants. The degree of modification is based on digital colorant information in the digital image data file, mottling information from a mottling tile, and a colorant gain curve for at least one colorant. The colorant gain curve is obtained by determining a tint percentage, the variation of the tint of the printed at least one colorant when printed at a tint percentage on volume printing stock. The mottling information has a spatial frequency distribution substantially equal to the spatial frequency distribution of the mottling produced by at least one colorant on a volume printing stock. The method allows the digital image to emulate the image that would result if the digital image was printed on a volume printer on high volume printing stock.

REFERENCES:
patent: 2002/0008880 (2002-01-01), Dewitte et al.
patent: 2005/0219625 (2005-10-01), Koifman et al.
patent: 2006/0050317 (2006-03-01), Foster et al.
patent: 2007/0000402 (2007-01-01), Abrott

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