1. A raster image processor comprising: means adapted for receiving image data, which image data is comprised of a linear bit stream representative of an associated image; segmenting means adapted for segmenting the image data into M chunks, each chunk being consisting of N bits, wherein M and N are integers greater than one; and page map memory adapted for storing page map data, which page map data includes at least M entries, each entry corresponding to a single chunk, each entry adapted for storing a first flag value representative of a first selected value of a chunk corresponding thereto and at least a second flag value when the chunk corresponding thereto is other than the first selected value.