Patent ID: 9639791
Date: 2017-05-02
CPC Classifications: G06K

Claim:
1. A raster image processing device comprising: an input/output device receiving print data to print a multicolor image, said multicolor image including a black region covering a color region; and a processor device operatively connected to said input/output device, said processor device raster image processing said print data to assign black data and color data to pixels of a raster data page, said raster image processing comprising said processor device: after said raster image processing, said processor device removing said color data from, and leaving said black data in, ones of said over-print pixels that are positioned more than a pixel distance from non-black color pixels in said raster data page to produce a print page, using said processor, edge pixels being positioned along a circumference of said over-print region, and said pixel distance comprising at least one pixel in a direction from each of said edge pixels toward a center of said over-print region, and said processor device outputting said print page to a printing engine through said input/output device.