Printer cleaning pump nozzle printer nozzle protection play a decisive role. After the nozzle carriage returns to the position, the nozzle should be cleaned by the pump nozzle weakly, and the nozzle is sealed and protected. When the printer is installed with a new cartridge or the nozzle is disconnected, the suction pump on the bottom of the machine will pump the nozzle through it, and the better the accuracy of the nozzle. However, in actual use, its performance and air tightness will be reduced due to the increase of the residual solidified content of dust and ink in the mouth due to the prolongation of time. If the user does not regularly check or clean it, it will make your printer spout out of trouble. Maintenance of the components of the method: Remove the lid of the printer to remove the car, with pure needle inhalation of pure water to be washed, in particular, to the mouth of the embedded microporous gasket in full cleaning. In this special remind the user, when cleaning this component, it must not be washed with ethanol or methanol, which will cause the assembly of the microporous gasket inlaid deformation. Also to mention is that inkjet printers should try to stay away from the high temperature and dust of the working environment, only a good working environment to ensure long-term normal use of the machine.