Black text printing from page description languages

Details Black text printing from page description languages Black text printing from page description languages

2005-02-15

2005-02-15

Garcia, Gabriel (Department: 2624)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001120

Reexamination Certificate

active

06856428

ABSTRACT:
A technique for printing black text on a colored background, in which the graphics are broken down into three categories: text, polygons (also referred to as line drawing or vectors), and images (also referred to as bitmaps or raster data) when the incoming graphic information is a Page Description Language (PDL) data file (e.g. Adobe Postscript-PS- or Hewlett-Packard PCL). If the object is not a text object, it is processed in a normal manner. If the object is a text object, a determination is made if the color of the object is black. If the object is not a black text object, it is processed in a normal manner. If the object is a black text object, special processing and rasterization techniques are applied. Thus, the invention exploits to advantage the fact that it is possible in most PDL instances to treat black text differently from other black objects.

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