10. The laser printer controller system of claim 9 wherein said old data word is all zeros if said new data word is the first word of the dot line of the character pattern and wherein said new data word is all zeros if said old data word is the last word of the dot line of the character pattern.
10. The laser printer controller system of claim 9 wherein said old data word is all zeros if said new data word is the first word of the dot line of the character pattern and wherein said new data word is all zeros if said old data word is the last word of the dot line of the character pattern. 11. The laser printer controller of claim 10 wherein said reformating means includes partitioning means for holding the most significant data bits of the old data word in an intermediate element with the most significant bits of the old data word in the most significant bit positions of the intermediate element and the least significant data bits of the new data word in said intermediate element with the least significant bits of the new data word in the least significant bit positions of the intermediate element whereby an intermediate full word is stored and rotate means for translating the bit sequence of the bits of the old data word from the most significant bit positions to the least significant bit positions and substantially simultaneously the bit sequence of the bits from the new data word from the least significant bit positions to the most significant bit positions for the composite data word in the second orientation for the storage in the page bit map of the raster memory means.