Method and apparatus to prime printhead assembly

Method and apparatus to prime a printhead assembly are disclosed. An example method includes drawing ink into a printhead assembly by operating a pump in fluid communication with the printhead assembly for a first period of time at a first speed. An amount of ink drawn into the printhead assembly during the first period is to be sufficient to cover nozzles of a die at an outlet of the printhead assembly. The example method further includes evacuating air within the printhead assembly by operating the pump for a second period of time after the first period of time at a second speed greater than the first speed. 公开了灌注打印头组件的方法和装置。示例方法包括通过在第时间段将与打印头组件流体连通的泵以第速度操作来将墨引入所述打印头组件中。在所述第时间段期间引入所述打印头组件中的墨量足以覆盖在所述打印头组件的出口处的印模的喷嘴。所述示例方法进步包括通过在所述第时间段之后的第二时间段将所述泵以大于所述第速度的第二速度操作来排空所述打印头组件内的空气。