Method of color ink jet printing on glossy media

Details Method of color ink jet printing on glossy media Method of color ink jet printing on glossy media

1995-03-02

1999-09-28

Le, N.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 40, B41J 221, B41J 2145, B41J 215

Patent

active

059596457

ABSTRACT:
A method of processing print data by scanning the print data to determine a black density level and a color density level. A fortification function in which color density varies with respect to black density is applied, and if the color density level is less than a predetermined value based on the fortification function at the given black density level, the color density level is increased to the predetermined value. This serves to ensure that black, dark gray, and dark muted color areas are properly fortified to prevent halo image defects. The method of processing may be performed in conjunction with the process of printing by an ink jet printer, and the fortification function may provide a color density of zero below a first threshold, an increasing density up to a second threshold, and a constant density above the second threshold.

REFERENCES:
patent: 4596993 (1986-06-01), Erlichman
patent: 4959790 (1990-09-01), Morgan
patent: 5107346 (1992-04-01), Bowers et al.
patent: 5339171 (1994-08-01), Fujisawa et al.
patent: 5428377 (1995-06-01), Stoffel et al.
patent: 5600353 (1997-02-01), Hickman et al.

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