Patent ID: 8687031

Claim:
A printing control unit for supplying drive signals to a print head unit based on pixel printing data from a host, the printing control unit comprising: a configuration registration unit for storing configuration data for setting data logic of a logic circuit unit according to supply patterns of the drive signals; the logic circuit unit comprising a logic circuit for outputting output data according to the configuration data and the pixel printing data, and an output circuit for outputting the drive signals based on the output data; a line buffer unit for accumulating current dot printing data supplied from the host; a shift register unit for getting and passing the current dot printing data and previous dot history data from the line buffer unit to the logic circuit unit; a node control circuit unit for switching the logic circuit unit to output the output data to the print head unit: and a sequencer unit for controlling the sequence of the shift register unit, the logic circuit unit, and the node control circuit unit; wherein the logic circuit unit updates logic operations applied to the pixel printing data according to the configuration data and changes the drive signals to track the supply patterns.