Monochromatic printer and image processing apparatus

Details Monochromatic printer and image processing apparatus Monochromatic printer and image processing apparatus

2007-08-07

2007-08-07

Williams, Kimberly (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001100, C358S001400, C347S015000, C347S040000, C347S043000, C347S131000, C347S254000

Reexamination Certificate

active

10093901

ABSTRACT:
A printing apparatus is provided with multiple achromatic color inks having different densities and at least one chromatic color ink. Diversity of dots are created with the multiple achromatic color inks on a printing medium according to image data to form a black and white image where dots are inconspicuous. Dots of the at least one chromatic color ink are created according to lightness of an image to be mixed with the dots of at least one of the multiple achromatic color inks. This technique gives a high-quality monochromatic image with hue, where dots are inconspicuous. In the case of the printing apparatus provided with multiple chromatic color inks, a ratio of densities of these multiple chromatic color inks to one another is set to express a high-quality monochromatic image with desired hues. The printing apparatus provided with three different color inks, cyan, magenta yellow, as the multiple chromatic color inks, enables color images to be printed.

REFERENCES:
patent: 5032851 (1991-07-01), Yoshimura
patent: 6089691 (2000-07-01), Kakutani
patent: 6164747 (2000-12-01), Yashima et al.
patent: 6554384 (2003-04-01), Tanaka
patent: 04-347642 (1992-12-01), None
patent: 10-129014 (1998-05-01), None
patent: 10-181000 (1998-07-01), None
patent: 11-320924 (1999-11-01), None
Abstract of Japanese Patent Publication No. 04-347642, Pub. Date: Dec. 2, 1992, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 10-129014, Pub. Date: May 19, 1998, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 10-181000 Pub. Date: Jul. 7, 1998, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 11-320924, Pub. Date: Nov. 24, 1999, Patent Abstracts of Japan.

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