Patent ID: 6407678
Filing Date: 2002-06-18
Classification: H03M

Abstract:
An ink-jet printer, comprising:ink-jet printing apparatus for ejecting droplets of ink onto a print medium at a print zone during printing operations; a media handling system for passing the print medium along a media path through the print zone and positioning the medium for accurate printing operations, said media handling system including: an endless belt for carrying the print media through print zone; a belt drive system to drive the belt in a controlled manner; encoding indicia associated with the endless belt, said indicia defined in or on the endless belt; a first encoder transducer responsive to the encoding indicia to provide a first encoder signal; a second encoder transducer responsive to the encoding indicia to provide a second encoder signal, said second encoder transducer spatially separated from the first encoder transducer; a printer controller responsive to the first encoder signal and the second encoder signal to determine position data regarding the endless belt and control the belt drive system to position the print medium for the print operations.