Compressed page data incorporating compressed contone CMYK data and bi-level black data is received. The contone CMYK data and bi-level black data are expanded in parallel operations. The CMYK contone data is composited to bi-level CMYK data. The bi-level black data is composited over the bi-level CMYK data. The composited bi-level and CMYK data is then printed.

 
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> Controller for controlling printing on both surfaces of a sheet of print media

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