Printing apparatus

The invention provides a printing apparatus. A print head includes a nozzle array comprising a plurality of nozzles, and a negative pressure generating portion configured to apply a negative pressure to the nozzle array. A tank includes a storage portion and an air communication port. A tube connects the print head and the tank and supply the liquid from the tank to the print head. A highest position of a liquid level in the tank in the vertical direction is higher than a position of the nozzle array, and an absolute value of a water head difference caused by a difference between the highest position of the liquid level in the tank and the position of the nozzle array is not larger than an absolute value of a negative pressure generated by the negative pressure generating portion. 本发明提供了一种打印设备。打印头包括喷嘴阵列和负压生成部，所述喷嘴阵列包括多个喷嘴，所述负压生成部被配置为对所述喷嘴阵列施加负压。容器包括储存部和大气连通口。管连接所述打印头和所述容器，并将液体从所述容器供给到所述打印头。所述容器中的液面在垂直方向上的最高位置比所述喷嘴阵列的位置高，并且由所述容器中的液面的最高位置与所述喷嘴阵列的位置之间的差导致的水头差的绝对值不比所述负压生成部所生成的负压的绝对值大。