System for adjusting color intensity of neighboring pixels

Details System for adjusting color intensity of neighboring pixels System for adjusting color intensity of neighboring pixels

1995-05-30

1998-01-06

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

358456, 358503, 358534, 347188, H04N 140, H04N 146, G01D 1510

Patent

active

057060983

ABSTRACT:
A method of printing an image onto a substrate includes the steps of determining a difference in intended color intensity between a first pixel and a second pixel; adjusting the intended color intensity of the second pixel based on the determined difference; and depositing a colorant onto the substrate at the first pixel and at the second pixel at the adjusted intended intensity, so as to enhance the appearance of the image on the substrate. The current system has particular utility in enhancing the appearance of fine images such as one pixel wide, vertical and diagonal lines in a printing system which utilizes printhead heating elements that are larger in the vertical direction than in the horizontal direction.

REFERENCES:
patent: 4691211 (1987-09-01), Brownstein
patent: 4969052 (1990-11-01), Ishida et al.
patent: 5031050 (1991-07-01), Chan
patent: 5032903 (1991-07-01), Suzuki et al.
patent: 5113454 (1992-05-01), Marcantonio et al.
patent: 5216951 (1993-06-01), Yokoyama et al.
patent: 5231677 (1993-07-01), Mita et al.
patent: 5243444 (1993-09-01), Fan

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