Inkjet printhead and inkjet image apparatus

摘要

An inkjet printhead and an inkjet image forming apparatus capable of achieving improved ink jetting performance as a result of causing partition(s) partitioning ink chamber(s) of inkjet printhead(s) to be made up of piezoelectric member(s) for which rate(s) of change of electromechanical coupling coefficient(s) with respect to temperature display negative characteristics, or causing partition(s) partitioning ink chamber(s) of inkjet printhead(s) to be made up of piezoelectric member(s) for which rate(s) of change of electromechanical coupling coefficient(s) with respect to temperature display positive characteristics and controlling electrical energy supplied to such piezoelectric member(s) based on image data and ink temperature.