This invention provides for a method of page expansion and printing of image data received from a computer. The method includes the steps of receiving a page description from the computer, the page having a bi-level black layer compressed in an EDRL (Edge Delta and Runlength) format and a continuous...http://www.google.de/patents/US7817306?utm_source=gb-gplus-sharePatent US7817306 - Method of page expansion and printing with a pagewidth printer having low-speed and high-speed firing modes
