Liquid supply member, liquid ejection head, and recording apparatus

Abstract

The liquid supply member includes a first member, a second member, a flow path, a joining portion, an opening, and a blocking portion. The flow path is located between the first member and the second member. The joining portion is located at an interface between the first member and the second member and surrounds the flow path. The opening communicates with an interior of the liquid supply member. The blocking portion is located between the opening and the outside of the liquid supply member.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a liquid supply member, a liquid ejecting head, and a recording apparatus. Background Art

[0002] As a printing device, an inkjet printer and an inkjet plotter using an inkjet recording method are known. Such an inkjet printing device is equipped with a liquid ejecting head for ejecting liquid.

[0003] Such a liquid ejecting head includes, for example, an ejecting member for ejecting liquid and a liquid supplying member for supplying liquid to the ejecting member. The liquid supplying member includes a liquid supplying member in which a flow path is formed between two adjacent members and the two members are joined by welding or the like.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2011-79244 Summary of the invention

[0007] A liquid supply component of one embodiment includes a first component, a second component, a flow path, a joint, an opening, and a blocking portion. The flow path is located between the first component and the second component. The joint is located at the interface between the first component and the second component and surrounds the flow path. The opening is connected to the interior of the liquid supply component. The blocking portion is located between the opening and the exterior of the liquid supply component. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a front view schematically showing the outline of the printer according to the embodiment.

[0009] Figure 2 This is a top view schematically showing the outline of a printer according to the embodiment.

[0010] Figure 3 It is a perspective view showing an example of a schematic structure of a liquid ejecting head according to the embodiment.

[0011] Figure 4 Yes Figure 3 The liquid ejecting head is shown in a partially enlarged perspective view.

[0012] Figure 5 It is a perspective view showing an example of a flow path member according to the embodiment.

[0013] Figure 6 Yes Figure 5 The flow path member shown is a partially enlarged perspective view.

[0014] Figure 7 It is a diagram for explaining the blocking portion according to the embodiment.

[0015] Figure 8 It is a perspective view showing an example of the liquid supply member according to the embodiment.

[0016] Fig. 9 This is a cross-sectional view for explaining an example of the cover-shaped member according to the embodiment.

[0017] Fig.10 It is a perspective view showing another example of the flow path member according to the embodiment. DETAILED DESCRIPTION

[0018] In the above-mentioned liquid supply member, there is a possibility that, for example, ink may intrude into the inside and cause a short circuit in wiring or the like, and there is room for further improvement in terms of improving reliability.

[0019] Therefore, it is desired to provide a liquid supply member, a liquid ejecting head, and a recording apparatus having high reliability.

[0020] Hereinafter, with reference to the accompanying drawings, embodiments of the liquid supply member, the liquid jet head, and the recording device disclosed in the present application will be described. It should be noted that the present invention is not limited to the embodiments shown below. In addition, it should be noted that the accompanying drawings are schematic, and the relationship between the dimensions of the elements, the ratio of the elements, etc. are sometimes different from the actual. In addition, the accompanying drawings sometimes also include different parts such as the relationship between the dimensions and the ratio.

[0021] In the embodiments shown below, expressions such as "constant", "orthogonal", "perpendicular" or "parallel" are sometimes used, but these expressions do not need to be "constant", "orthogonal", "perpendicular" or "parallel" in a strict sense. That is, the above expressions allow errors such as manufacturing accuracy and setting accuracy.

[0022] In addition, the various embodiments can be combined as appropriate within the scope of the processing contents not being contradictory. In addition, in the following various embodiments, the same reference numerals are attached to the same parts, and repeated descriptions are omitted.

[0023] [Implementation Method]

[0024] <Printer Structure>

[0025] First, refer to Figure 1 as well as Figure 2 An overview of a printer as an example of a recording device according to the embodiment will be described. Figure 1 This is a front view schematically showing the outline of the printer according to the embodiment. Figure 21 is a top view schematically showing the outline of a printer according to the embodiment. The printer according to the embodiment is, for example, a color inkjet printer.

[0026] like Figure 1 As shown, the printer 1 includes a paper feed roller 2, a guide roller 3, a coater 4, a head housing 5, a plurality of conveying rollers 6, a plurality of frames 7, a plurality of liquid ejecting heads 8, a conveying roller 9, a dryer 10, a conveying roller 11, a sensor unit 12, and a recovery roller 13. The conveying roller 6 is an example of a conveying unit.

[0027] The printer 1 also includes a control unit 14 that controls various parts of the printer 1. The control unit 14 controls the operation of the paper feed roller 2, the guide roller 3, the coater 4, the head housing 5, the plurality of conveying rollers 6, the plurality of frames 7, the plurality of liquid ejecting heads 8, the conveying roller 9, the dryer 10, the conveying roller 11, the sensor unit 12, and the recovery roller 13.

[0028] The printer 1 records images and texts on the printing paper P by causing liquid droplets to land on the printing paper P. The printing paper P is an example of a recording medium. The printing paper P is wound around a paper feed roller 2 before use. The printer 1 conveys the printing paper P from the paper feed roller 2 to the inside of a head housing 5 via a guide roller 3 and a coater 4.

[0029] The coater 4 uniformly coats the coating agent on the printing paper P. Thus, the surface of the printing paper P can be treated, and thus the printing quality of the printer 1 can be improved.

[0030] The head housing 5 accommodates a plurality of conveying rollers 6, a plurality of frames 7, and a plurality of liquid ejecting heads 8. A space is formed inside the head housing 5, and the space is isolated from the outside except for a portion such as a portion for printing paper P to enter and exit, which is connected to the outside.

[0031] The internal space of the head case 5 has at least one of the control factors such as temperature, humidity and air pressure controlled by the control unit 14 as necessary. The conveying roller 6 conveys the printing paper P to the vicinity of the liquid ejecting head 8 inside the head case 5 .

[0032] The frame 7 is a rectangular flat plate and is arranged so as to be close to the upper side of the printing paper P conveyed by the conveying roller 6. Figure 2 As shown, the frame 7 is arranged so that the longitudinal direction is perpendicular to the conveying direction of the printing paper P. Furthermore, inside the head case 5, a plurality of (eg, four) frames 7 are arranged along the conveying direction of the printing paper P at predetermined intervals.

[0033] Liquid, for example, ink, is supplied from a liquid tank (not shown) to the liquid ejecting head 8. The liquid ejecting head 8 ejects the liquid supplied from the liquid tank.

[0034] The control unit 14 controls the liquid ejecting head 8 based on data such as images and characters to eject liquid toward the printing paper P. The distance between the liquid ejecting head 8 and the printing paper P is, for example, about 0.5 to 20 mm.

[0035] The liquid ejecting head 8 is fixed to the frame 7. The liquid ejecting head 8 is arranged so that the longitudinal direction thereof is perpendicular to the conveying direction of the printing paper P.

[0036] That is, the printer 1 according to this embodiment is a so-called line printer in which the liquid ejecting head 8 is fixed inside the printer 1. It should be noted that the printer 1 according to this embodiment is not limited to a line printer, but may be a so-called serial printer.

[0037] A serial printer refers to a printer that alternately performs the following actions and the conveyance of printing paper P, in which recording is performed while the liquid ejecting head 8 is moved back and forth in a direction intersecting the conveyance direction of printing paper P, such as a direction approximately orthogonal to the conveyance direction of printing paper P.

[0038] like Figure 2 As shown, a plurality of (e.g., 5) liquid ejecting heads 8 are fixed on a frame 7. Figure 2 , an example is shown in which three liquid jet heads 8 are arranged in front of the conveying direction of the printing paper P and two liquid jet heads 8 are arranged in the rear. In the conveying direction of the printing paper P, the liquid jet heads 8 are arranged in such a way that the centers of the respective liquid jet heads 8 do not overlap.

[0039] Furthermore, a plurality of liquid ejecting heads 8 located in one frame 7 form a head group 8A. Four head groups 8A are arranged along the conveying direction of the printing paper P. Four colors of ink are supplied to the liquid ejecting heads 8 belonging to the same head group 8A. Thus, the printer 1 can perform printing based on four colors of ink using the four head groups 8A.

[0040] The colors of ink ejected from each liquid ejecting head 8 are, for example, magenta (M), yellow (Y), cyan (C), and black (K). The control unit 14 controls each liquid ejecting head 8 to eject ink of a plurality of colors onto the printing paper P, thereby printing a color image on the printing paper P.

[0041] Note that, in order to perform the surface treatment of the printing paper P, a coating agent may be ejected toward the printing paper P from the liquid ejecting head 8 .

[0042] The number of the liquid ejecting heads 8 included in one head group 8A and the number of the head groups 8A mounted on the printer 1 can be changed as appropriate according to the printing object and printing conditions. For example, if printing is performed within the range that can be printed by one liquid ejecting head 8, the number of the liquid ejecting heads 8 mounted on the printer 1 can be one.

[0043] The printing paper P which has been printed inside the head housing 5 is conveyed to the outside of the head housing 5 by the conveying roller 9, and passes through the inside of the dryer 10. The dryer 10 dries the printing paper P which has been printed. The printing paper P which has been dried by the dryer 10 is conveyed by the conveying roller 11, and is recovered by the recovery roller 13.

[0044] In the printer 1 , by drying the printing paper P using the dryer 10 , it is possible to suppress the overlapping and wound printing paper P from adhering to each other or the undried liquid from being scratched at the collection roller 13 .

[0045] The sensor unit 12 is composed of a position sensor, a speed sensor, a temperature sensor, etc. The control unit 14 can determine the status of each component of the printer 1 based on information from the sensor unit 12 and control each component of the printer 1 .

[0046] In the printer 1 described above, the case where printing paper P is used as a printing target (ie, recording medium) is shown. However, the printing target in the printer 1 is not limited to printing paper P, and a roll of cloth or the like may be used as a printing target.

[0047] The printer 1 may also place the printing paper P on a conveyor belt instead of directly conveying the printing paper P. By using a conveyor belt, the printer 1 can print on single sheets of paper, cut cloth, wood, tiles, and the like.

[0048] The printer 1 may also eject liquid containing conductive particles from the liquid ejecting head 8 to print wiring patterns of electronic devices, etc. The printer 1 may also eject a predetermined amount of liquid chemicals or liquid containing chemicals from the liquid ejecting head 8 toward a reaction container, etc. to produce chemicals.

[0049] In addition, the printer 1 may include a cleaning unit that cleans the liquid ejecting head 8. The cleaning unit cleans the liquid ejecting head 8 by, for example, a wiping process or a capping process.

[0050] The wiping process refers to a process of removing the liquid adhering to the liquid ejecting head 8 by wiping the surface of the portion where the liquid is ejected, for example, with a flexible wiper.

[0051] In addition, the capping process is implemented as follows. First, a cap is applied to cover the surface of the portion where the liquid is ejected (this is referred to as capping). Thus, a substantially closed space is formed between the surface of the portion where the liquid is ejected and the cap. Next, the liquid is ejected repeatedly in such a closed space. Thus, the blockage in the nozzle 21A (see Figure 3 ) liquids, foreign matter, etc. whose viscosity is higher than the standard state.

[0052] <Structure of the liquid ejection head>

[0053] Next, refer to Figure 3 The structure of the liquid ejecting head 8 according to the embodiment will be described. Figure 3 It is a perspective view showing an example of a schematic structure of a liquid ejecting head according to the embodiment.

[0054] It should be noted that for the sake of convenience, Figure 3 In the figure, a three-dimensional orthogonal coordinate system including the Z axis with the vertical direction upward as the positive direction is shown. Such an orthogonal coordinate system is sometimes shown in other drawings used in the following description. In addition, in the following description, for convenience, the nozzle 21A (refer to Figure 3 ) direction, i.e., the negative Z-axis side is called "down" or "below", and the positive Z-axis side is called "up" or "above". Figure 3~Figure 6 In the drawings, various components are sometimes omitted or simplified.

[0055] like Figure 3 As shown, the liquid ejecting head 8 includes an ejecting member 21 , a liquid supplying member 30 , a pressurizing unit 23 , a first flow path 27 , a second flow path 28 , a head cover 29 , heat sinks 31 , 32 , a connector 33 , a driving member (driving substrate) 34 , and a connecting member (flexible substrate) 35 .

[0056] The ejection member 21 is located close to the printing paper P (see Figure 1 ) is disposed on the bottom surface side of the liquid ejecting head 8 facing the ejecting member 21. The ejecting member 21 has a nozzle 21A. The nozzle 21A is opened on the bottom surface of the liquid ejecting head 8 and ejects the liquid supplied to the inside of the ejecting member 21 to the outside.

[0057] The liquid supply member 30 is located above the ejection member 21. The liquid supply member 30 supplies liquid to the ejection member 21. The liquid supply member 30 has a flow path 30A connected to the nozzle 21A. Liquid is supplied from the first flow path 27 to the inside of the flow path 30A. It should be noted that the details of the liquid supply member 30 will be described later.

[0058] The pressurizing unit 23 controls the ejection of the liquid from the ejection member 21 according to the driving signal from the driving IC 36. The pressurizing unit 23 has a piezoelectric element that is displaced by energization and a pressure chamber whose internal pressure changes according to the displacement of the piezoelectric element. The pressurizing unit 23 controls the ejection of the liquid from the nozzle 21A of the ejection member 21 to the outside by changing the internal pressure of the pressure chamber.

[0059] The first flow path 27 supplies liquid to the flow path 30A (flow path portion 224) of the liquid supply member 30. The second flow path 28 recovers liquid from the flow path 30A of the liquid supply member 30. When ink is initially placed in the liquid ejecting head 8, air, storage liquid, etc. present in the flow path 30A are extracted from the second flow path 28, so that the ink can be easily introduced into the liquid ejecting head 8. When printing is performed, the second flow path 28 can be closed in advance or the ink in the flow path 30A can be recovered. The liquid recovered from the second flow path 28 is supplied to the first flow path 27 through, for example, a filter not shown.

[0060] The head cover 29 is plate-shaped and is arranged so as to cover the space above the liquid supply member 30 .

[0061] The nozzle cover 29 can be made of a conductive metal material such as aluminum. In addition, the nozzle cover 29 can also be made of a conductive or insulating resin material. As a result, the liquid jet head 8 dissipates heat appropriately via the nozzle cover 29. In addition, the thermal conductivity of the nozzle cover 29 can also be higher than that of the liquid supply member 30. As a result, heat conduction from the nozzle cover 29 to the liquid supply member 30 is not likely to occur. Therefore, for example, the possibility of the properties of the liquid flowing inside the liquid supply member 30 changing and causing poor discharge performance can be reduced.

[0062] The nozzle cover 29 may be in contact with the liquid supply member 30 or may be separated from the liquid supply member 30. By disposing the nozzle cover 29 separately from the liquid supply member 30, heat conduction from the nozzle cover 29 to the liquid supply member 30 is less likely to occur, thereby promoting heat conduction to the heat sinks 31 and 32. Therefore, for example, the possibility of the properties of the liquid flowing inside the liquid supply member 30 changing and causing poor discharge performance can be reduced.

[0063] The heat sinks 31 and 32 are plate-shaped members arranged along the YZ plane. The heat sinks 31 and 32 are arranged to face each other in the X-axis direction via the nozzle cover 29 and the liquid supply member 30. The heat sinks 31 and 32 are fixed to the nozzle cover 29 and the liquid supply member 30 via the fixing member 42. The fixing member 42 may be, for example, a metal screw member.

[0064] The heat dissipation plates 31 and 32 can be made of, for example, the same material as the shower head cover 29. In addition, the heat dissipation plates 31 and 32 can be made of, for example, a material having a higher thermal conductivity than the shower head cover 29.

[0065] The connector 33 is electrically connected to the pressurizing unit 23. The connector 33 is electrically connected to the pressurizing unit 23 by the control unit 14 (see Figure 1 ) outputted control signal and receives a driving signal from the outside for driving, for example, a piezoelectric element possessed by the pressurizing section 23.

[0066] The driving member 34 is used to drive the liquid ejecting head 8 . The driving member 34 generates a control signal for a driving IC 36 described later. The control signal for the driving IC 36 is supplied to the driving IC 36 via the connecting member 35 .

[0067] The connecting member 35 is located between the pressurizing part 23 and the driving member 34. The connecting member 35 electrically connects the pressurizing part 23 and the driving member 34. A driving IC 36 is mounted on the connecting member 35. The driving IC 36 is a so-called integrated circuit. The driving IC 36 controls the pressurizing part 23 according to a control signal sent from the driving member 34, thereby controlling the ejection of the liquid.

[0068] <Structure of liquid supply member>

[0069] Next, refer to Figure 4~Figure 7 The structure of the liquid supply member 30 according to the embodiment will be described. Figure 4 Yes Figure 3 The liquid ejecting head is shown in a partially enlarged perspective view.

[0070] like Figure 4 As shown in FIG. 1 , the liquid supply member 30 includes a flow path member 22 as a first member and a cover member 24 as a second member. The liquid supply member 30 includes a joint 25 and a stopper 26. The joint 25 and the stopper 26 are located at the interface between the flow path member 22 and the cover member 24. In addition, the liquid supply member 30 includes a flow path 30A (see FIG. 1 ) between the flow path member 22 and the cover member 24. Figure 3 ). It should be noted that the details of the joining portion 25 and the blocking portion 26 will be described later.

[0071] Figure 5 It is a perspective view showing an example of a flow path member according to the embodiment. Figure 6 Yes Figure 5 The flow path member shown is a partially enlarged perspective view. Figure 5 as well as Figure 6 The flow path member 22 shown shows a state where the cover member 24 of the liquid supply member 30 according to the embodiment is removed.

[0072] like Figure 5 As shown, the flow path member 22 has a cutout portion 221, an opening 223, and a flow path portion 224. The cutout portion 221 and the opening 223 are located on both sides of the flow path portion 224 in the X-axis direction.

[0073] The cutout portion 221 is configured by cutting out the side surfaces of the flow path member 22 at both ends in the width direction along the X-axis. The heat sinks 31 and 32 (see Figure 3). Thus, the length of the heat sinks 31 and 32 in the Z-axis direction can be made greater than that of the nozzle cover 29, so that, for example, the heat dissipation of the liquid jet head 8 can be improved. In addition, since the heat sinks 31 and 32 are accommodated in the cutout portion 221, for example, the enlargement of the liquid jet head 8 in the X-axis direction can be avoided. In addition, since the flow path member 22 has the cutout portion 221, for example, it is easy to accommodate the heat sinks 31 and 32.

[0074] The opening 223 is located closer to the center of the flow path member 22 than the cutout portion 221. The opening 223 is, for example, located adjacent to the receiving pressurizing portion 23 (see Figure 3 ) is connected to the interior of the liquid supply member 30. A connecting member 35 (see Figure 3 ).

[0075] The flow path portion 224 is located in the center of the flow path member 22 and is a recessed portion extending in the longitudinal direction along the Y-axis direction. The flow path portion 224 is sealed by the cover member 24 located above the flow path member 22, and constitutes the flow path 30A (see Figure 3 ).

[0076] In addition, the liquid supply member 30 has a joint portion 25. The joint portion 25 is a portion formed by joining the flow path member 22 and the lid member 24. The joint portion 25 is arranged so as to surround the flow path portion 224. Since the joint portion 25 surrounding the flow path portion 224 is provided at the interface between the flow path member 22 and the lid member 24, the liquid between the flow path member 22 and the lid member 24 is not limited to the flow path 30A (see Figure 3 ) flows properly inside.

[0077] In addition, the liquid supply member 30 has a blocking portion 26 located at the interface between the flow path member 22 and the cover member 24. The blocking portion 26 is located between the opening 223 and the outside 40 (see Figure 7 ). The blocking portion 26 and the joint portion 25 are similarly the parts formed by joining the flow path member 22 and the cover member 24. The joining mentioned here may include welding as a scheme, and specifically, may include, for example, heat welding, high-frequency welding, ultrasonic welding, and laser welding. The liquid supply member 30 is made of, for example, a resin material. It should be noted that the liquid supply member 30 may be made of metal.

[0078] Figure 7 This is a diagram for explaining an example of a stopper portion according to the embodiment. Figure 7 The liquid ejecting head 8 shown corresponds to a cross-sectional view of the portion where the barrier portion 26 is located along the YZ plane.

[0079] For example, in the liquid supply member 30 in which the flow path member 22 and the cover member 24 are joined, it is inevitable that the ink enters the small gap between the flow path member 22 and the cover member 24. In such a case, if the flow path member 22 and the cover member 24 are joined only at the joint 25 surrounding the flow path portion 224, the ink will reach the opening 223 in a manner avoiding the joint 25 and invade the inside of the liquid supply member 30, thereby causing a short circuit in the wiring. In the liquid supply member 30 involved in the present embodiment, by configuring the blocking portion 26 in a manner that separates the opening 223 from the outside 40, even if the ink enters the gap at the end of the liquid supply member 30, the ink is not easy to invade the inside of the liquid supply member 30. As a result, it is not easy to cause a short circuit in the wiring inside the liquid supply member 30, thereby improving the reliability of the liquid supply member 30.

[0080] The blocking portion 26 is further described. Figure 4 as well as Figure 5 As shown, the blocking portion 26 may extend in a direction intersecting the joint portion 25. More specifically, the blocking portion 26 may extend in a width direction of the flow path member 22 from the joint portion 25. Thus, the bonding strength between the flow path member 22 and the lid member 24 is improved.

[0081] In addition, the blocking portion 26 may be arranged at the edge of the flow path member 22 in a manner separated from the flow path portion 224. Thus, even if the ink enters the gap at the end of the liquid supply member 30, it is difficult for the ink to further enter the inside of the liquid supply member 30. Thus, it is less likely that short circuits of the wiring inside the liquid supply member 30 will occur, and the reliability of the liquid supply member 30 is further improved.

[0082] In addition, if Figure 4 As shown, the blocking portion 26 may be located at a position closer to the outside than the nozzle cover 29. In other words, the blocking portion 26 may be located at a position closer to the end of the nozzle cover 29. More specifically, the blocking portion 26 may be located at a position closer to the end of the liquid supply member 30 in the length direction than the nozzle cover 29. Thus, it is possible to realize a liquid ejecting head 8 in which ink is not easy to invade, thereby improving the reliability of the liquid ejecting head 8.

[0083] In addition, if Figure 4 As shown, the blocking portion 26 may be located at a position larger than the heat dissipation plates 31 and 32 (see Figure 3 ) is located closer to the outside. In other words, the blocking portion 26 and the heat sinks 31 and 32 (see Figure 3More specifically, the blocking portion 26 may be located at the end of the liquid supply member 30 in the width direction compared to the heat sinks 31 and 32. Thus, it is possible to realize a liquid ejecting head 8 in which ink is not easy to invade, thereby improving the reliability of the liquid ejecting head 8.

[0084] Next, use Figure 8 , Fig. 9 An example of the liquid supply member 30 according to the embodiment will be described. Here, the case where the liquid supply member 30 is a resin member joined by laser welding will be described as an example.

[0085] Figure 8 It is a perspective view showing an example of the liquid supply member according to the embodiment. Fig. 9 This is a cross-sectional view for explaining an example of the cover-shaped member according to the embodiment.

[0086] The material of the flow path member 22 as the first member may be, for example, a light absorbing resin that absorbs laser light. In addition, the material of the cover member 24 as the second member may be, for example, a light transmissive resin that transmits laser light. The laser light is irradiated from the first surface 241 of the cover member 24 located on the opposite side of the flow path member 22, and a joint portion 25 is formed at the interface between the flow path member 22 and the cover member 24 (see Figure 4 ) and blocking portion 26.

[0087] The cover member 24 may include a first portion 24a covering the periphery of the edge of the flow path member 22. Fig. 9 As shown in FIG. 1 , the first portion 24a is disposed outside from both ends of the flow path member 22 along the X-axis direction. When the end of the flow path member 22 is irradiated with laser light, the flow path member 22 may expand and be exposed from the edge of the flow path member 22. Even in such a case, the first portion 24a can reduce the possibility of laser light directly contacting the light absorbing resin exposed from the edge of the flow path member 22 and causing overheating, for example.

[0088] It should be noted that the surface roughness of the first portion 24a of the cover-like member 24, which is located outside the blocking portion 26, may be greater than that of other portions of the cover-like member 24 as the second member. For example, the surface roughness of the first surface 241 of the cover-like member 24 located in the first portion 24a may be greater than that of other portions of the first surface 241. Thus, the intensity of the laser beam passing through the first portion 24a can be reduced, thereby reducing overheating of the light-absorbing resin exposed from the edge of the flow path member 22.

[0089] It should be noted that the surface roughness is, for example, the surface roughness measured according to JIS B 0601 (2013). A contact surface roughness meter or a non-contact surface roughness meter can be used in the measurement. As measurement conditions, for example, the measurement length is set to 0.4 mm, the cutoff value is set to 0.08 mm, the spot diameter is set to 0.4 μm, and the scanning speed is set to 1 mm / second. It should be noted that the measurement conditions can be appropriately set.

[0090] In addition, although the example in which the surface roughness of the first surface 241 of the lid-shaped member 24 is increased is shown, the surface roughness of the surface on the opposite side to the first surface 241 of the lid-shaped member 24 may be increased.

[0091] In addition, if Fig. 9 As shown, the blocking portion 26 can be located in a step-like region at the edge of the flow path member 22. That is, the blocking portion 26 can be located inside the side surface 220 of the flow path member 22. Thus, even when the cover member 24 has the first portion 24a, the liquid supply member 30 is not easily enlarged.

[0092] <Another embodiment>

[0093] Fig.10 2 is a perspective view showing another example of a flow path member according to the embodiment. Fig.10 As shown in FIG. 2 , the blocking portion 26 may be arranged so as to surround the opening 223. The blocking portion 26 may further include blocking portions 26a and 26b located on the opposite side of the joint portion 25 across the opening 223. Thus, the periphery of the opening 223 is sealed, so that even if the ink enters the gap at the end of the liquid supply member 30, it is difficult for the ink to further invade the interior of the liquid supply member 30. Thus, it is less likely that short circuits of the wiring inside the liquid supply member 30 will occur, and the reliability of the liquid supply member 30 is further improved.

[0094] [Another Embodiment]

[0095] In the above embodiment, the case where the liquid jet head 8 has the heat sinks 31 and 32 is described, but it may have only one of the heat sinks 31 and 32. In this case, the flow path member 22 only has to have the cutout portion 221 corresponding to the heat sink of the liquid jet head 8.

[0096] In the above embodiment, the flow path member 22 has two openings 223 , but may have only one opening 223 . In this case, one connection member 35 passing through the opening 223 may be provided corresponding to the opening 223 .

[0097] In addition, in the above-mentioned embodiment, the liquid supply member 30 supplies ink to the ejection member 21, but the liquid supply member 30 may also recover ink from the ejection member 21. In this case, two flow paths are provided in the liquid supply member 30, namely, a supply flow path for supplying ink supplied from the first flow path 27 to the ejection member 21, and a recovery flow path for recovering un-ejected ink from the ejection member 21 and sending it to the second flow path 28. The supply flow path may have a structure substantially the same as the flow path 30A (flow path portion 224) of the above-mentioned embodiment, but a flow path directly connected to the second flow path 28 may not be provided. If Figure 5 For example, the supply flow path may not be provided with a portion extending from the center of the flow path portion 224 in the Y-axis direction in the positive direction of the Y-axis. The recovery flow path may be configured similarly to the flow path 30A by using a cover member 24 to close a recessed portion provided in the flow path member 22. In this case, the recessed portion connected to the second flow path 28 that becomes the recovery flow path may be formed by using a cover member 24 to close a recessed portion provided in the flow path member 22. Figure 5 The same structure is used as the portion extending from the center of the flow path portion 224 in the Y-axis direction in the positive direction of the Y-axis. In addition, a joint portion 25 may be provided around the concave portion of the flow path member 22 that becomes the recovery flow path, and connected to the concave portion 25. Figure 5 Similarly, the dam portion 26 is provided so as to extend from the joint portion 2. The liquid recovered from the second flow path 28 is supplied to the first flow path 27 through, for example, a filter (not shown).

[0098] As described above, the liquid supply member 30 according to the embodiment includes a first member (e.g., a flow path member 22), a second member (e.g., a cover member 24), a flow path 30A, a joint 25, an opening 223, and a blocking portion 26. The flow path 30A is located between the first member and the second member. The joint 25 is located at the interface between the first member and the second member, and surrounds the flow path 30A. The opening 223 is connected to the inside of the liquid supply member 30. The blocking portion 26 is located between the opening 223 and the outside 40. Thus, according to the liquid supply member 30 according to the embodiment, it is possible to have high reliability.

[0099] Further effects and variations can be easily derived by those skilled in the art. Therefore, the broader scheme of the present invention is not limited to the specific detailed structures and representative embodiments described and described above. Therefore, various changes can be made without departing from the spirit or scope of the general concept of the invention defined by the attached technical solutions and their equivalents.

[0100] Description of Reference Numerals

[0101] 1 Printer

[0102] 8 Spray head

[0103] 14 Control Unit

[0104] 21. Ejection component

[0105] 21A Nozzle

[0106] 22 Flow path components

[0107] 23 Pressurization section

[0108] 24 Cover member

[0109] 25 Joint

[0110] 26 Blocking part

[0111] 29 Nozzle Cover

[0112] 30 Liquid supply member

[0113] 30A flow path

[0114] 31, 32 heat sink

[0115] 33 Connectors

[0116] 34 Driving component (driving substrate)

[0117] 35. Connecting member (flexible substrate)

[0118] 36 Driver IC

[0119] 223 Open your mouth.

Claims

1. A liquid supply member, wherein: The liquid supply member comprises: first component; The second component; a flow path located between the first member and the second member; a joint portion, which is located at the interface between the first member and the second member and surrounds the flow path; an opening communicating with an interior of the liquid supply member; and A blocking portion is located between the opening and the exterior of the liquid supply member.

2. The liquid supply member according to claim 1, wherein The blocking portion extends from the engaging portion in a direction intersecting the engaging portion.

3. The liquid supply member according to claim 1 or 2, wherein: The stopper is arranged at an edge of the first member.

4. The liquid supply member according to any one of claims 1 to 3, wherein The blocking portion is a laser cladding portion, The second member has a first portion covering the periphery of the edge portion of the first member.

5. The liquid supply member according to claim 4, wherein The surface roughness of the first portion located outside the stopper portion is greater than the surface roughness of other portions of the second member.

6. The liquid supply member according to any one of claims 1 to 5, wherein The blocking portion surrounds the opening.

7. A liquid ejecting head, wherein: The liquid jet head comprises: The liquid supply member according to any one of claims 1 to 6; Pressurized components; a driving member that drives the pressing member; and a spray head cover covering the driving member, The blocking portion is located outside the nozzle cover.

8. The liquid ejecting head according to claim 7, wherein: The opening of the liquid supply member communicates with the pressurizing member.

9. A liquid ejecting head, wherein: The liquid jet head comprises: The liquid supply member according to any one of claims 1 to 6; Pressurized components; a driver IC that supplies a signal to the pressurizing member; and A heat sink that releases the heat of the driver IC to the outside. The blocking portion is located outside the heat dissipation plate.

10. The liquid ejecting head according to claim 9, wherein The opening of the liquid supply member communicates with the pressurizing member.

11. A recording device, wherein: The recording device includes the liquid ejecting head according to any one of claims 7 to 10.

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