Color printing

Details Color printing Color printing

2006-02-21

2009-08-11

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Color correction

C358S001900

Reexamination Certificate

active

07573621

ABSTRACT:
A method of printing a pixel defined by C, M, Y color values having a sum that is not less than a maximum allowed paper coverae max_cov, including assigning a maximum of the C, M, Y values to max_color; assigning a minimum of the C, M, Y values to min_color; selecting a black color value K that is not greater than a minimum of min_color and (C+M+Y-max_cov)/2; determining adjusted non-black primary color values Cout, Mout, Yout and a secondary value S_color such that the sum of the black color value K, the adjusted non-black primary color values Cout, Mout, Yout, and the secondary color value S_color is equal to the maximum allowed paper coverage max_cov; and half-toning K, Cout, Mout, Yout, and S_color.

REFERENCES:
patent: 6023344 (2000-02-01), Yabe
patent: 6250733 (2001-06-01), Yao et al.
U.S. Appl. No. 11/089,886, filed Mar. 24, 2005 by Meng Yao et al; Color Printing.
U.S. Appl. No. 11/089,887, filed Mar. 24, 2005 by Meng Yao et al; Color Prinitng.

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