Circulating ink path plate for ink-jet printing head

Abstract

The utility model discloses a circulating ink path plate for an ink-jet printing head, which relates to the technical field of ink-jet printing heads and comprises an ink path plate body, the ink path plate body is used for being arranged between a vibration plate and a nozzle plate of the ink-jet printing head, and one side of the ink path plate body close to the vibration plate is provided with an ink inlet groove and an ink outlet groove. The ink inlet groove is used for being communicated with an ink supply port of the vibration plate, the ink outlet groove is used for being communicated with an ink return port of the vibration plate, a pressure cavity is formed in the ink path plate body, one end of the pressure cavity is communicated with the ink inlet groove, and the other end of the pressure cavity is communicated with the ink outlet groove, so that ink circulation can be formed between the ink inlet groove and the ink outlet groove; the multiple pressure cavities correspond to the nozzles of the nozzle plate in a one-to-one mode, and the pressure cavities communicate with the corresponding nozzles. The ink-jet printing head can reduce nozzle blockage of the ink-jet printing head and improve printing quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to inkjet print head technical field, in particular to a kind of circulation ink path board for inkjet print head. BACKGROUND

[0002] The inkjet printer is the output device that ink drop is ejected on the printing medium surface to form character or image.For the inkjet printer using piezoelectric inkjet technology, its working principle is to place many small piezoelectric ceramics in the nozzle of the inkjet printer print head, using the principle that piezoelectric ceramic is deformed under voltage, timely voltage is applied, piezoelectric ceramic generates expansion and contraction, so that ink in nozzle is ejected, thereby forming pattern on the printing medium surface.

[0003] In piezoelectric inkjet print head, piezoelectric ceramic layer, vibrating plate and nozzle plate are sequentially arranged from top to bottom, wherein nozzle plate is arranged with a plurality of small nozzles, and vibrating plate is closely matched with piezoelectric ceramic layer, when printing signal is input, piezoelectric ceramic layer is deformed, the deformation is transmitted to vibrating plate, vibrating plate is vibrated, pressure is applied to ink on nozzle plate, so that ink is ejected from corresponding nozzle.

[0004] Because the nozzle on nozzle plate is usually circular port with diameter between several microns and tens of microns, it is easy to be blocked by impurities in ink, when nozzle is blocked, ink drop cannot be normally ejected, which will cause printing to appear broken line, color deficiency and other phenomena.In order to solve the problem of nozzle blockage, inkjet printer is usually equipped with cleaning program, which removes blockage by ejecting cleaning liquid to nozzle, however, frequent use of cleaning program will cause ink waste, and excessive cleaning will also cause damage to nozzle plate. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of circulation ink path board for inkjet print head to solve the problems of above-mentioned related technology, can reduce the nozzle blockage of inkjet print head, improve printing quality.

[0006] To achieve the above object, the utility model provides the following scheme:

[0007] The utility model provides a kind of circulation ink path board for ink-jet print head, including ink path board body, the ink path board body is used to set between ink-jet print head's vibrating plate and nozzle plate, ink path board body is close to the side of vibrating plate is provided with ink inlet groove and ink outlet groove, ink inlet groove is used to communicate with the ink supply port of vibrating plate, ink outlet groove is used to communicate with the ink return port of vibrating plate, and pressure chamber is provided on the ink path board body, one end of pressure chamber communicates with ink inlet groove, the other end communicates with ink outlet groove, to make that ink inlet groove and ink outlet groove can form ink circulation;Pressure chamber is provided with multiple, and is set one by one with the nozzle of nozzle plate, and pressure chamber communicates with corresponding nozzle.

[0008] Preferably, the ink inlet groove includes an ink inlet main groove and an ink inlet branch groove, and the ink outlet groove includes an ink outlet main groove and an ink outlet branch groove.

[0009] Preferably, the thickness of the ink path board body is 500 microns.

[0010] Preferably, the depth of the ink inlet groove is 300 microns.

[0011] Preferably, the depth of the ink outlet groove is 300 microns.

[0012] Preferably, the pressure chamber is a rectangular through-hole structure.

[0013] Preferably, the ink path board body is a rectangular plate.

[0014] Preferably, the ink path board body is a silicon wafer.

[0015] Compared with related art, the utility model has the following technical effects:

[0016] The utility model provides a circulation ink path board for ink jet print head, including ink path board body, the ink path board body is communicated between the ink inlet groove and ink outlet groove through a plurality of pressure chambers, and every pressure chamber all is communicated with corresponding nozzle on nozzle plate, uses, the ink path board body is set between the vibration plate and nozzle plate of ink jet print head, is communicated with the ink supply port and ink return port of vibration plate through ink inlet groove and ink outlet groove respectively, the ink of main ink tank can flow into each pressure chamber through ink inlet groove, and then flows back into the main ink tank through ink outlet groove, thereby forms the ink circulation loop, removes the impurity, microbubble etc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or related technologies, the following will briefly introduce the drawing needed to be used in the embodiments, and obviously, the drawing in the following description is only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0018] Figure 1 The schematic view of the circulation ink path board for ink jet print head provided by the utility model embodiment.

[0019] In the drawing: 01-nozzle, 1-ink path board body, 2-pressure chamber, 3-ink inlet main path groove, 4-ink inlet branch path groove, 5-ink outlet main path groove, 6-ink outlet branch path groove. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] The utility model aims at providing a circulation ink path board for ink jet print head to solve the problems in the related technologies, can reduce the nozzle blockage of ink jet print head, improves the printing quality.

[0022] In order to make the above purpose, features and advantages of the utility model more apparent and easy to understand, the following will be further detailed to the utility model in conjunction with the drawings and specific embodiments.

[0023] As Figure 1As shown, this embodiment provides a circulating ink path board for an inkjet printhead, including an ink path board body 1. The ink path board body 1 is disposed between the vibrating plate and the nozzle plate of the inkjet printhead. An ink inlet groove and an ink outlet groove are provided on the side of the ink path board body 1 near the vibrating plate. The ink inlet groove is used to communicate with the ink supply port of the vibrating plate, and the ink outlet groove is used to communicate with the ink return port of the vibrating plate. A pressure chamber 2 is provided on the ink path board body 1. One end of the pressure chamber 2 is connected to the ink inlet groove, and the other end is connected to the ink outlet groove, so that ink circulation can be formed between the ink inlet groove and the ink outlet groove. Multiple pressure chambers 2 are provided, and they are arranged one-to-one with the nozzles 01 of the nozzle plate, and the pressure chamber 2 is connected to the corresponding nozzle 01.

[0024] During use, the ink from the main ink tank flows into the ink inlet groove on the ink path plate body 1 through the ink supply port of the vibrating plate, then passes through each pressure chamber 2 and the ink outlet groove in sequence, and finally flows back to the main ink tank through the ink return port of the vibrating plate, thus forming an ink circulation loop. The circulating ink carries away impurities, microbubbles, etc. that accumulate at the nozzle 01, effectively reducing the clogging of the nozzle 01. In addition, it can maintain the wettability around the nozzle 01, reduce the ink temperature, and improve the print quality.

[0025] In this embodiment, as Figure 1 As shown ( Figure 1 The arrows in the diagram indicate the direction of ink flow. Figure 1 The left and right directions are the X direction, with Figure 1 The ink inlet groove includes a main ink inlet groove 3 and a branch ink inlet groove 4, and the ink outlet groove includes a main ink outlet groove 5 and a branch ink outlet groove 6. The main ink inlet groove 3 is located along the Y-direction on the ink plate body 1 near the ink supply port of the vibrating plate (i.e.,...). Figure 1 The right side of the main ink inlet plate 1), and the ink inlet end of the main ink inlet groove 3 (i.e. Figure 1 The lower end of the main ink inlet channel 3 can communicate with the ink supply port of the vibrating plate; the main ink outlet channel 5 is set along the Y direction on the ink path plate body 1 at a position close to the ink return port of the vibrating plate (i.e., Figure 1 The left side of the main ink path plate 1), and the ink outlet end of the main ink outlet groove 5 (i.e. Figure 1 The upper end of the main ink outlet channel 5 can be connected to the ink return port of the vibrating plate; the ink inlet branch channel 4 is arranged in the X direction between the main ink inlet channel 3 and the main ink outlet channel 5, and the ink inlet end of the ink inlet branch channel 4 is connected to the ink outlet end of the main ink inlet channel 3; the ink outlet branch channel 6 is arranged in the X direction between the main ink inlet channel 3 and the main ink outlet channel 5, and the ink outlet end of the ink outlet branch channel 6 is connected to the ink inlet end of the main ink outlet channel 5; the ink inlet branch channel 4 and the ink outlet branch channel 6 are connected through each pressure chamber 2. This circulating ink path arrangement is neat and compact, so that the ink in each pressure chamber 2 can circulate.

[0026] In the embodiment, the thickness of the ink path plate body 1 is 500 microns; the depth of the ink inlet groove and the ink outlet groove is 300 microns; the pressure cavity 2 is a rectangular through-hole structure; specifically, the ink path plate body 1 in the embodiment is a 500-micron-thick rectangular silicon wafer, which can also be made of stainless steel, and can be processed by etching a 300-micron-deep ink inlet groove and an ink outlet groove on the silicon wafer and etching a plurality of 500-micron-deep pressure cavities 2 (that is, the pressure cavities 2 are arranged through the silicon wafer, which is convenient for communication with the corresponding nozzle 01) on the silicon wafer; when used, the ink path plate body 1 is attached between the vibrating plate and the nozzle plate, and a complete circulating ink path is formed.

[0027] The principle and implementation mode of the specific examples applied in the utility model are described, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, for the general technical personnel in the field, the specific implementation mode and application range will be changed according to the idea of the utility model. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A recirculating ink path plate for an inkjet printhead, characterized by: The ink path plate body is arranged between the vibration plate and the nozzle plate of the ink jet print head, and is provided with an ink inlet groove and an ink outlet groove on the side close to the vibration plate, the ink inlet groove is communicated with the ink supply port of the vibration plate, the ink outlet groove is communicated with the ink return port of the vibration plate, and the ink path plate body is provided with a pressure cavity, one end of the pressure cavity is communicated with the ink inlet groove, and the other end is communicated with the ink outlet groove, so that the ink circulation between the ink inlet groove and the ink outlet groove can be formed.

2. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The ink inlet groove includes an ink inlet main groove and an ink inlet branch groove, and the ink outlet groove includes an ink outlet main groove and an ink outlet branch groove, wherein the ink inlet main groove is arranged on the ink path plate body in the Y direction at a position close to the ink supply port of the vibration plate, and the ink inlet end of the ink inlet main groove can be communicated with the ink supply port of the vibration plate; the ink outlet main groove is arranged on the ink path plate body in the Y direction at a position close to the ink return port of the vibration plate, and the ink outlet end of the ink outlet main groove can be communicated with the ink return port of the vibration plate; the ink inlet branch groove is arranged between the ink inlet main groove and the ink outlet main groove in the X direction, and the ink inlet end of the ink inlet branch groove is communicated with the ink outlet end of the ink inlet main groove; the ink outlet branch groove is arranged between the ink inlet main groove and the ink outlet main groove in the X direction, and the ink outlet end of the ink outlet branch groove is communicated with the ink inlet end of the ink outlet main groove; the ink inlet branch groove and the ink outlet branch groove are communicated through each pressure cavity.

3. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The thickness of the ink path plate body is 500 microns.

4. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The depth of the ink inlet groove is 300 microns.

5. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The depth of the ink outlet groove is 300 microns.

6. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The pressure cavity is a rectangular through-hole structure.

7. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The ink path plate body is a rectangular plate.

8. The recirculating ink path plate for an inkjet printhead of claim 1, wherein: The ink path plate body is a silicon wafer.

Images