Patent ID: 7267417

Claim:
A printer controller for receiving first data and manipulating the first data to produce dot data to be printed, the print controller including at least two serial outputs for supplying the dot data to at least one printhead, wherein each of the serial outputs is configured to supply dot data for at least two channels of the at least one printhead, the printer controller being installed in a printer comprising: the at least one printhead which comprises first and second elongate printhead modules, the printhead modules being parallel to each other and being disposed end to end on either side of a join region, wherein the first printhead module is longer than the second printhead module; and at least first and second printer controllers configured to receive print data and process the print data to output dot data to the printhead, wherein: the first printer controller outputs dot data to both the first printhead module and the second printhead module; and the second printer controller outputs dot data only to the second printhead module.