Abstract: Methods and-apparatus implementing a technique for forming a trap polygon which does not interfere with the print quality of other trap polygons or objects. Edges in close proximity to a color transition edge (“CTE”) are checked for potential interference. A trap polygon is formed for the CTE that avoids any interfering edges or trap polygons for those edges. The technique can be applied to form a trap polygon for each edge in a page to be printed.

Abstract: Methods and-apparatus implementing a technique for forming a trap polygon which does not interfere with the print quality of other trap polygons or objects. Edges in close proximity to a color transition edge (“CTE”) are checked for potential interference. A trap polygon is formed for the CTE that avoids any interfering edges or trap polygons for those edges. The technique can be applied to form a trap polygon for each edge in a page to be printed.

Abstract: Methods and apparatus implementing a technique for forming a trap polygon which does not interfere with the print quality of other trap polygons or objects. Edges in close proximity to a color transition edge (“CTE”) are checked for potential interference. A trap polygon is formed for the CTE that avoids any interfering edges or trap polygons for those edges. The technique can be applied to form a trap polygon for each edge in a page to be printed.

Abstract: A method of trapping objects for a page includes identifying sequential matching objects, combining into a larger object matching sequential objects including parameterizing each object as a band in the larger object and trapping non-matching objects and the larger object. In another aspect, a method of preparing a page to be printed is provided that includes receiving a page description language file describing the page to be printed, identifying sequential matching objects in the page description file that represent a gradient to be printed on the page and combining into a larger object matching sequential objects. The step of combining includes defining an outline for the object and a defining a function describing the coloring for the object.

Abstract: Methods and apparatus implementing a technique for forming a trap polygon which does not interfere with the print quality of other trap polygons or objects. Edges in close proximity to a color transition edge (“CTE”) are checked for potential interference. A trap polygon is formed for the CTE that avoids any interfering edges or trap polygons for those edges. The technique can be applied to form a trap polygon for each edge in a page to be printed.

Abstract: Method and apparatus for rasterizing a resolution-independent page description for printing. A peeker (gap between two visible edges in vector representation that is narrower than a printer pixel) is identified between a first visible edge and a second visible edge, and a color adjustment is made to at least one of the edges. In one embodiment, a side of the second visible edge facing a side of the first visible edge is identified. The color of the identified side of the first visible edge is changed based on the color of the identified side of the second visible edge. The color adjustment is advantageous in connection with methods of trapping.