OpenPage requires substantially less memory than conventional rasterizers. A comparison of the memory requirements of OpenPage and conventional rasterizers in rendering an A4 page at varying resolutions is shown below.
 OpenPage |
 Conventional Rasterizers |
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OpenPage rasterizes on a band basis. It requires access to all the graphical elements of the picture before it begins rasterizing.
It then rasterizes these elements in scanline order, constructing bands of picture data which are passed to the output driver as soon as they are complete.
This means that OpenPage does not require a frame store, massively improving its memory consumption over conventional systems. Complex high resolution images can be rasterized with a minimal amount of extra overhead.
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Memory