Method for printing a color proof using a spatial filter

Details Method for printing a color proof using a spatial filter Method for printing a color proof using a spatial filter

2007-10-09

2007-10-09

Poon, King Y. (Department: 2625)

Facsimile and static presentation processing

Natural color facsimile

Measuring, testing, and calibrating

C358S001900, C358S002100, C358S003040, C358S003050, C358S003060, C358S534000, C358S003130, C382S167000, C382S164000, C382S252000, C382S106000

Reexamination Certificate

active

10356006

ABSTRACT:
The invention is a method for printing a color proof from an initial halftone bitmap file (10) having individual dots (10a,10b,10c,10d) using a spatial filter (20) which is created from a calibration curve (30) for a printing press (380). The method further consists of sending an initial halftone bitmap file consisting of individual dots to the spatial filter creating a filtered output (40), quantizing the filtered output from the spatial filter to “n” levels to create a quantized image (50), transmitting the quantized image to a color printer (70), and printing a halftone color proof (80) on the color printer.

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