An apparatus and method for controlling operation of a printer enables the transport rate of the print media to be coordinated with the print rate in order to precisely compensate for top-of-form and image stretch errors. The printer comprises a platen roller driven by a stepper motor to transport the...http://www.google.com/patents/US5915865?utm_source=gb-gplus-sharePatent US5915865 - Method and apparatus for compensating for printer top-of-form and image stretch errors