1. A printing system comprising: (a) a raster storing means including a page memory for storing at least one page of information to be printed, each page being comprised of a plurality of lines of information including a beginning line, a plurality of intermediate lines and an ending line, each line having one or more successively addressed words each having a plurality of pixels, with a beginning word having the lowest address, with each successive word having a higher address, and with the last word having the highest address; (b) means, coupled to the page memory, for causing the readout of words stored in the page memory in either a first direction or a second direction, the first direction being from the first line successively thru the intermediate lines thru the last line with each line being read out in a direction from the lowest addressed word to the highest addressed word, the second direction being from the last line successively thru the intermediate lines thru the first line with each line being read out in a direction from the highest addressed word to the lowest addressed word and the significance of pixel positions of pixels from words read in the second direction being reversed from the significance of pixel positions of pixels from words read in the first direction; and (c) printing means for printing on first and second sides of a printing medium, coupled to the means causing the readout of words, for printing pages of information stored in the page memory on a printing medium having a top and bottom, with the printing of the first side of the printing medium being performed by printing the page of information read out from the page memory in one of the first and second directions while moving the printing medium from the top to the bottom thru a printing station and the printing of second side of the printing medium being performed by printing the page of information readout from the page memory in the other of the first and second directions while moving the printing medium from the bottom to the top.
1. A printing system comprising: (a) a raster storing means including a page memory for storing at least one page of information to be printed, each page being comprised of a plurality of lines of information including a beginning line, a plurality of intermediate lines and an ending line, each line having one or more successively addressed words each having a plurality of pixels, with a beginning word having the lowest address, with each successive word having a higher address, and with the last word having the highest address; (b) means, coupled to the page memory, for causing the readout of words stored in the page memory in either a first direction or a second direction, the first direction being from the first line successively thru the intermediate lines thru the last line with each line being read out in a direction from the lowest addressed word to the highest addressed word, the second direction being from the last line successively thru the intermediate lines thru the first line with each line being read out in a direction from the highest addressed word to the lowest addressed word and the significance of pixel positions of pixels from words read in the second direction being reversed from the significance of pixel positions of pixels from words read in the first direction; and (c) printing means for printing on first and second sides of a printing medium, coupled to the means causing the readout of words, for printing pages of information stored in the page memory on a printing medium having a top and bottom, with the printing of the first side of the printing medium being performed by printing the page of information read out from the page memory in one of the first and second directions while moving the printing medium from the top to the bottom thru a printing station and the printing of second side of the printing medium being performed by printing the page of information readout from the page memory in the other of the first and second directions while moving the printing medium from the bottom to the top. 8. A printing system in accordance with claim 1, wherein the means for causing the readout of the words comprises: (a) means for providing the addresses of words to be sequentially read out from the page memory, the means for providing addresses of words containing a counter which is programmed to count a total equal to the number of words which are contained in the page memory and counting in ascending order with an address field anywhere between a minimum address and a maximum address when reading in the first direction and counting in descending order within an addressing field anywhere between the maximum address and the minimum address when reading in the second direction, each word having a plurality of pixels each having an address with the pixels ranging in address from a most significant pixel to a least significant pixel; and (b) means, coupled to the page memory, for selectively reversing the order of outputting of pixels in a single word on an output having a number of lines equal to the number of pixels in a word so as to either output the pixels in a first fixed order from the most significant pixel to the least significant pixel when the direction of reading is in the first direction or in a second fixed order, opposite the first fixed order, from the least significant pixel to the most significant pixel, when the direction of reading is in the second direction, and the output lines being coupled to the printing means.