Method and system for enhancing the quality of both color and bl

Details Method and system for enhancing the quality of both color and bl Method and system for enhancing the quality of both color and bl

1988-12-02

1990-05-29

Reynolds, Bruce A.

Facsimile and static presentation processing

Facsimile

Recording apparatus

346140R, 346 11, 400126, H04N 1034, H04N 123, G01D 1516, B41J 221

Patent

active

049300180

ABSTRACT:
A method for reducing "grainyness" or color contrast in color imaging systems and simultaneously reducing or eliminating paper cockleing of media printed by ink jet printing. The method involves determining the maximum allowable ink print density necessary to reduce or eliminate paper cockleing in the printed media and then providing tight control of the selection of gray scale ink drop count and associated dye loading in relation to this maximum allowable print density. Using this method, pixels are selected and printed in such a manner as to maximize the uniformity of ink distribution on the printed media.
This method will work using either a variable drop size or a fixed drop size with variable dye loadings. It will also work with most error diffusion or dithering schemes presently used and available in the image processing arts.

REFERENCES:
patent: 4233663 (1980-11-01), Sugawara
patent: 4503444 (1985-03-01), Tacklind
patent: 4595948 (1986-06-01), Itoh
patent: 4635078 (1987-01-01), Sakurada
patent: 4638373 (1987-01-01), Logan
patent: 4672432 (1987-06-01), Sakurada
patent: 4680596 (1987-07-01), Logan
patent: 4686538 (1987-08-01), Kouzato
patent: 4714964 (1987-12-01), Sasaki
patent: 4746935 (1988-05-01), Allen
patent: 4772911 (1988-09-01), Sasaki

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