Post RIP image rendering in an electrographic printer to...

Details Post RIP image rendering in an electrographic printer to... Post RIP image rendering in an electrographic printer to...

2007-04-24

2007-04-24

Wallerson, Mark (Department: 2626)

Facsimile and static presentation processing

Static presentation processing

C358S452000, C358S453000, C358S003150, C382S199000

Reexamination Certificate

active

10784643

ABSTRACT:
A method of printing multiple images with differing line screen frequencies with a printer is print sensitive to differing line screen frequencies, the method comprising the steps of: converting the images into a digital bitmap comprised of an array of pixels wherein each pixel is assigned a digital value representing marking information; defining each pixel as either a background pixel, interior pixel, or an edge pixel; reassigning the digital value of the interior pixels to a fixed interior pixel value; and reassigning the edge pixel values so as to minimize print sensitivity to differing line screen frequencies between images.

REFERENCES:
patent: 5956544 (1999-09-01), Stern et al.
patent: 6121986 (2000-09-01), Regelsberger et al.
patent: 6157736 (2000-12-01), Jodoin et al.
patent: 6233062 (2001-05-01), Takamatsu et al.
patent: 6243499 (2001-06-01), Loce et al.
patent: 6775032 (2004-08-01), Jacobs
patent: WO 01/89194 (2001-11-01), None
patent: WO 02/10860 (2002-02-01), None
patent: WO 02/14957 (2002-02-01), None

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