Patent ID: 6045275
Filing Date: 2000-04-04
Classification: B41J

Abstract:
A thermal head controller for controlling heating energy generated from heating resistors provided in a thermal head by using pattern data composed of dot data as print-dot data representing print dots and non-print-dot data representing non-print dots so that the thermal head performs predetermined printing,said thermal head controller comprising:storage means for holding said pattern data;comparing means for comparing dot data in said pattern data and other data adjacent to the dot data, and outputting the compared result;data conversion means for converting said print-dot data, which are obtained when the compared result shows that print dots and non-print dots are adjacently positioned, into adjacent-dot data representing that the print dots are adjacent to said non-print dots; andenergy control means for controlling the heating energy generated from the heating resistors in the thermal head by using said print-dot data, said non-print-dot data and said adjacent-dot data;wherein said print-dot data and said non-print-dot data contain a plurality of data bits; andwherein said comparing means detects whether or not the print dots and the non-print dots are adjacent to each other by performing a logical AND calculation between lowest bits of the adjacent dot data.