Method for controlling the over-energy applied to an inkjet print cartridge using dynamic pulse width adjustment based on printhead temperature

A method of controlling a temperature of an inkjet printhead comprising:

• providing a printhead assembly having ink ejection elements energizable by an electrical pulse having an amplitude and pulse width;
• reading a nominal printhead operating temperature, a nominal operating pulse width and pulse width calibration data;
• obtaining a current printhead operating temperature using a sensor on the printhead;
• determining a pulse width adjustment factor based on the pulse width calibration data and a measured temperature of the printhead;
• calculating an adjusted operating pulse width based on the pulse width adjustment factor and the nominal operating pulse width;
• and
• applying the adjusted operating pulse width to the printhead to control the printhead temperature.