PRINT HEAD HAVING INK PRESSURE SENSOR

An inkjet printing system, including an inlet in a print head to receive ink from an ink supply, a plurality of nozzles to eject ink in the print head, an ink pressure sensor disposed in an ink path,the ink pressure sensor configured to determine an ink pressure of the ink in the print head and output a signal indicating the ink pressure, and a controller in the print head configured to receive and process the signal indicating the ink pressure from the ink pressure sensor. The inkjet printing system may also include a memory to store an ink pressure and time profile. The controller may alsooutput a signal to stop ejecting ink from the plurality of nozzles when the ink pressure is either below a negative threshold or above a positive threshold. 种喷墨打印系统，其包含：用于从油墨源接收油墨的打印头中的入口；用于喷出所述打印头中的油墨的多个喷嘴；安置在油墨路径中的油墨压力传感器，所述油墨压力传感器被配置成确定所述打印头中的所述油墨的油墨压力并输出指示所述油墨压力的信号；以及所述打印头中的控制器，所述控制器被配置成从所述油墨压力传感器接收和处理指示所述油墨压力的所述信号。所述喷墨打印系统还可以包含用于存储油墨压力和时间分布的存储器。当所述油墨压力低于负阈值或高于正阈值时，所述控制器还可以输出信号以停止从所述多个喷嘴喷出油墨。