Energy Control for a Resistive Ribbon Printer
Original Publication Date: 1986-Dec-01
Included in the Prior Art Database: 2005-Mar-09
Excessive heating of a printhead of a resistive ribbon printer due to printing graphics is prevented by reducing power to the printhead through sampling the electrode power at selected intervals. A plurality of consecutive samples is taken to determine how much, if any, the electrode power should be reduced. Excessive heating of a printhead of a resistive ribbon printer occurs when printing dense characters (at least 50% of each character box) for an extended period of time (at least 20 character boxes). With this excessive printhead heating, continued printing will result in increased printhead wear and damage, and ribbon damage, as well as degradation to subsequent printed characters.