Halftone for reducing dot contact between different colors

Details Halftone for reducing dot contact between different colors Halftone for reducing dot contact between different colors

2011-06-14

2011-06-14

Lee, Thomas D (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001800, C358S003060, C358S003130, C358S534000

Reexamination Certificate

active

07961350

ABSTRACT:
The invention provides printing method of printing on a printing medium. The method includes: generating dot data representing a status of dot formation on each of print pixels of a print image to be formed on the print medium, by performing a halftone process on image data representing, a input tone value of each of pixels constituting an original image; providing a print head having a plurality of nozzle groups that eject inks of mutually different colors; and generating the print image by mutually combining dot groups of multiple colors formed in at least one scan in a common print area, by forming each dot group with each of the plurality of nozzle groups during each scan of the print head in response to the dot data, the each of the dot groups being mutually different in color. The generating dot data comprise setting a condition for the halftone process for reducing contact between the dot groups of the at least two specific colors within at least part of tone values, for at least two specific colors of dot groups among the dot groups of multiple colors.

REFERENCES:
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patent: 5812744 (1998-09-01), Allebach et al.
patent: 6439682 (2002-08-01), Kakutani
patent: 2006/0279789 (2006-12-01), Yamazaki et al.
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patent: 2005-269527 (2005-09-01), None
patent: 2007-015359 (2007-01-01), None
patent: 2007-049443 (2007-02-01), None
patent: 2007-053714 (2007-03-01), None
Abstract of Japanese Patent Publication No. 07-177351 Pub. Date: Jul. 14, 1995, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 10-157167 Pub. Date: Jun. 16, 1998, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2005-236768 Pub. Date: Sep. 2, 2005, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2005-269527 Pub. Date: Sep. 29, 2005, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2007-015359 Pub. Date: Jan. 25, 2007, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2007-049443 Pub. Date: Feb. 22, 2007, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2007-053714 Pub. Date: Mar. 1, 2007, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 07-177351, Pub. Date: Jul. 14, 1995, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 10-157167, Pub. Date: Jun. 16, 1998, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2005-236768, Pub. Date: Sep. 2, 2005, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2005-269527, Pub. Date: Sep. 29, 2005, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2007-015359, Pub. Date: Jan. 25, 2007, Patent Abstracts of Japan.
Abstract of Japanese Patent Publication No. 2007-049443, Pub. Date: Feb. 22, 2007, Patent Abstracts of Japan.

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