Liquid ink printing system having region-dependent image process

Details Liquid ink printing system having region-dependent image process Liquid ink printing system having region-dependent image process

1996-09-24

1998-07-07

Coles, Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395102, 395106, 358500, 358518, 358537, 358538, 382164, 382165, 382190, G06K 100, H04N 146

Patent

active

057781605

ABSTRACT:
A liquid ink printing method having region dependent image processing for printing a color image with a liquid ink printer, having a printhead, from image information generated by an image source. The method includes generating a plurality of bitmaps from the image information, examining a corresponding portion of each of the plurality of bitmaps for color information, and applying color image processing to only the examined corresponding portion having color information. The method of printing, including region dependent image processing, improves performance of complex image processing operations by detecting and tagging portions of an image which require the complex image processing operations. Only those regions that require complex image processing operations are processed according to those processes and other information, such as text, are not processed.

REFERENCES:
patent: 5029224 (1991-07-01), Fujisawa
patent: 5247583 (1993-09-01), Kato et al.
patent: 5287204 (1994-02-01), Koizumi et al.
patent: 5475800 (1995-12-01), Vaughn
patent: 5513282 (1996-04-01), Williams
patent: 5565886 (1996-10-01), Gibson
patent: 5625711 (1997-04-01), Nicholson et al.

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