Patent ID: 8950843
Filing Date: 2015-02-10
Classification: B41J

Abstract:
1. An ink jet printing apparatus comprising: a printing head having nozzles configured to eject ink droplets; an acquiring unit configured to acquire a temperature of the printing head; a measuring unit configured to measure ejection characteristics of ink droplets ejected from the printing head; a determination unit configured to determine driving conditions of the printing head at a plurality of temperatures of the printing head including at least two temperatures of the printing head and temperatures different from the at least two temperatures of the printing head based on the ejection characteristics of ink droplets measured by the measuring unit at the at least two temperatures of the printing head, such that the ejection characteristics at the plurality of temperatures of the printing head approach a target ejection characteristic; and a driving unit configured to drive the printing head according to the driving condition determined based on the driving conditions at the plurality of temperatures of the printing head determined by the determination unit and the head temperature of the printing head acquired by the acquiring unit, wherein the determination unit determines the driving conditions at the plurality of temperatures of the printing head by interpolation based on the ejection characteristics of the ink droplets measured by the measuring unit at the at least two temperatures of the printing head.