A printer for continuously printing out essentially identical images with partial differences. The printer comprises a storage area (34) for storing predetermined constant data (3) and variable data (4), and at least a first and a second image data storage area (40, 41) for storing image data (2). The...http://www.google.fr/patents/US5562351?utm_source=gb-gplus-shareBrevet US5562351 - Printer having constant and variable data memory