JP3179332B2 - Cleaning method of inkjet head - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning method in a manufacturing process of an ink jet recording apparatus.

[0002]

2. Description of the Related Art A nozzle for communicating with a pressure chamber by pressurizing ink filled in a pressure chamber by displacing a diaphragm forming one of walls of an ink chamber by utilizing displacement in a thickness direction of a laminated piezoelectric element. FIG. 1 shows an inkjet head 1 for ejecting more ink. The outline of the structure is as shown in FIG. 7. A plurality of laminated piezoelectric elements 107 that can be driven independently are formed by bonding a laminated piezoelectric material on a rigid member 109 and forming a groove on the surface of the laminated piezoelectric material, thereby forming an ink. Nozzle 111 communicating with ink chamber 102 by pressurizing ink filled in ink chamber 102 by displacing diaphragm 103 forming one wall of chamber 102
This is to eject more ink droplets. The purpose of this configuration is to increase the amount of displacement in the thickness direction by laminating piezoelectric bodies, and as a result, to arrange ink chambers at a high density. Further, the laminated piezoelectric element 107 is electrically connected to an electrode pattern 108 formed on the vibration plate 103 and the rigid member 109, and is intended to facilitate driving from the outside.

[0003]

In the ink jet head having the above-described structure, foreign matter in the ink chamber is reduced by the nozzle 11.
It may cause clogging of 1. Therefore, in the manufacturing process of the ink jet head having the above-described configuration, it is necessary to clean and remove foreign matter.

[0004]

In order to achieve the above object, a method of cleaning an ink jet head according to the present invention comprises: mounting a jig in a cleaning liquid container containing a cleaning liquid such that a nozzle faces downward; The cleaning liquid container is placed in the ultrasonic cleaner, and the cleaning liquid in the cleaning liquid container is passed through the inside of the ink jet head 1 by the liquid supply pump while applying ultrasonic waves. Wash while sending the solution to the container.

[0005]

FIG. 2 is an explanatory view showing an embodiment of a method for cleaning an ink jet recording apparatus according to the present invention. As shown in FIG. In the washing liquid container 4 that is contained,
The ink jet head 1 is connected via a jig 10 such that the tube 5 comes to the ink supply port side. At this time, the nozzle 111 of the inkjet head 1 is directed downward. The connected tube 5 is connected to the liquid sending pump 7, and the opposite side of the tube 5 is connected to the waste liquid container 8. The cleaning liquid container 4 containing the ink jet head 1 and the like is placed in the ultrasonic cleaning machine 9. In this state, the cleaning liquid in the cleaning liquid container 4 is passed through the inside of the inkjet head 1 by the liquid sending pump 7 while applying ultrasonic waves by the ultrasonic cleaning machine 9.
Washing is performed while sending the liquid to the waste liquid container 8. In the cleaning method of the present invention, the foreign matter attached to the ink chamber cannot be completely removed only by the liquid pressure of the liquid sending pump 7 but is removed by ultrasonic waves, and the foreign matter is removed by the flow of the liquid by the liquid sending pump 7.

[0006]

As described above, the method for cleaning an ink jet according to the present invention can be carried out by cleaning in the final step even when foreign matter such as cleaning after grinding is mixed. , An ink jet head without the above can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an ink jet.

FIG. 2 is a schematic view showing a cleaning method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ink jet head 4 Cleaning liquid container 5 Tube 6 Cleaning liquid 7 Liquid sending pump 8 Waste liquid container 9 Ultrasonic cleaner 10 Jig 102 Ink chamber 111 Discharge port

Claims (1)

(57) [Claims] 1. An ink filled in an ink chamber is pressurized,
A method for cleaning an ink jet head for ejecting ink from a nozzle (111) communicating with the ink chamber, wherein a jig (1 ) is provided in a cleaning container (4) containing a cleaning liquid.
0) via the ink supply port of the inkjet head (1)
Connect one end of the tube (5) on the side, the other end of the tube (5) is connected to one end of the liquid feed pump (7) and the other end to the waste container (8) of the liquid feed pump (7) The cleaning liquid container (4) is placed in the ultrasonic cleaning machine (9), and the cleaning liquid in the cleaning liquid container (4) is supplied by the liquid supply pump (7) while applying ultrasonic waves. From the nozzle (111) through the ink chamber inside the inkjet head (1),
A method for cleaning an ink jet head, wherein cleaning is performed in the order of a tube (5), a liquid sending pump (7), and a waste liquid container (8) while performing liquid sending.