Liquid ejection head, head structure, and recording apparatus

Abstract

The present application provides a liquid ejection head, an ejection head structure, and a recording apparatus. The liquid ejection head includes a heat sink, a head body, a supply tube, and a shield. The heat sink is in contact with a heat source. The head body has an ejection hole that ejects a liquid. The supply tube supplies the liquid to the head body. The shield is disposed between the heat sink and the supply tube and is arranged separately from the heat sink and the supply tube.

Description

Technical Field

[0001] The disclosed embodiments relate to a liquid nozzle, a nozzle structure, and a recording device. Background Technology

[0002] As printing apparatus, inkjet printers and inkjet plotters that utilize inkjet recording methods are known. In such inkjet printing apparatuses, a liquid nozzle is mounted for ejecting liquid.

[0003] Regarding such liquid nozzles, there are known liquid nozzles that bring the housing into contact with the drive IC, which is a heat source, and dissipate the heat transferred from the drive IC through the housing (see, for example, Patent Document 1).

[0004] Prior art literature

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2014-195954 Summary of the Invention

[0007] One embodiment of the liquid nozzle includes a heat sink, a nozzle body, a supply pipe, and a shielding portion. The heat sink is in contact with a heat source. The nozzle body has an outlet for ejecting liquid. The supply pipe supplies the liquid to the nozzle body. The shielding portion is disposed between the heat sink and the supply pipe, and is separately configured from both the heat sink and the supply pipe. Attached Figure Description

[0008] Figure 1 This is an explanatory diagram (1) of the recording device according to the embodiment.

[0009] Figure 2 This is an explanatory diagram (2) of the recording device involved in the embodiment.

[0010] Figure 3 This is a top view showing the structure of the main parts of the liquid nozzle involved in the embodiment.

[0011] Figure 4 yes Figure 3 The side view of the liquid nozzle shown.

[0012] Figure 5 This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 1 of the embodiment.

[0013] Figure 6 yes Figure 5 The side view of the liquid nozzle shown.

[0014] Figure 7This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 2 of the embodiment.

[0015] Figure 8 This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 3 of the embodiment.

[0016] Figure 9 This is a top view showing the structure of the main parts of the nozzle structure of the liquid nozzle according to the modified example 4 of the embodiment.

[0017] Figure 10 yes Figure 9 The side view of the nozzle structure shown.

[0018] Figure 11 This is a top view showing the structure of the main parts of the nozzle structure of the liquid nozzle according to the modified example 5 of the embodiment.

[0019] Figure 12 yes Figure 11 The side view of the nozzle structure shown. Detailed Implementation

[0020] The embodiments of the liquid nozzle, nozzle structure, and recording device disclosed in this application will now be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the embodiments shown below.

[0021] <Printer Structure>

[0022] First, refer to Figure 1 and Figure 2 Here is an outline of printer 1, which is an example of a recording device involved in the implementation. Figure 1 and Figure 2 This is an explanatory diagram of the printer involved in the implementation method. Specifically, Figure 1 This is a simplified side view of printer 1. Figure 2 This is a simplified top view of printer 1. The printer 1 involved in the embodiment is, for example, a color inkjet printer.

[0023] like Figure 1 As shown, printer 1 includes a paper feed roller 2, a guide roller 3, a coating machine 4, a nozzle housing 5, multiple conveyor rollers 6, multiple frames 7, multiple liquid nozzles 8, a conveyor roller 9, a dryer 10, a conveyor roller 11, a sensor unit 12, and a recovery roller 13. The conveyor roller 6 is an example of a conveying unit.

[0024] Furthermore, the printer 1 includes a control unit 14, which controls the paper feed roller 2, guide roller 3, coating machine 4, nozzle housing 5, multiple conveyor rollers 6, multiple frames 7, multiple liquid nozzles 8, conveyor roller 9, dryer 10, conveyor roller 11, sensor unit 12, and recovery roller 13.

[0025] Printer 1 records images and text on printing paper P by striking it with droplets. Printing paper P is an example of a recording medium. Before use, printing paper P is wound on the paper feed roller 2. Printer 1 then feeds printing paper P from the paper feed roller 2 through the guide roller 3 and the coating machine 4 into the interior of the printhead housing 5.

[0026] Coating machine 4 applies a coating agent to all printing paper P. This allows for surface treatment of the printing paper P, thereby improving the printing quality of printer 1.

[0027] The printhead housing 5 houses multiple conveyor rollers 6, multiple frames 7, and multiple liquid nozzles 8. Inside the printhead housing 5, there is a space that is isolated from the outside except for a portion that communicates with the outside, such as the part for the paper P to enter and exit the printing process.

[0028] For the internal space of the printhead housing 5, at least one of the control factors such as temperature, humidity, and air pressure is controlled by the control unit 14 as needed. The conveyor roller 6 conveys the printing paper P to the vicinity of the liquid printhead 8 inside the printhead housing 5.

[0029] Frame 7 is a rectangular flat plate, positioned above and close to the printing paper P conveyed by conveyor roller 6. Additionally, as... Figure 2 As shown, the frame 7 is configured such that its long side is orthogonal to the transport direction of the printing paper P. Furthermore, inside the printhead housing 5, multiple (e.g., four) frames 7 are arranged along the transport direction of the printing paper P.

[0030] A liquid, such as ink, is supplied to the liquid nozzle 8 from a liquid tank (not shown). The liquid nozzle 8 then ejects the liquid supplied from the liquid tank.

[0031] The control unit 14 controls the liquid nozzle 8 based on data such as images and text, causing the liquid nozzle 8 to spray liquid toward the printing paper P. The distance between the liquid nozzle 8 and the printing paper P is, for example, 0.5 to 20 mm.

[0032] The liquid nozzle 8 is fixed to the frame 7. The liquid nozzle 8 is configured such that its long side is orthogonal to the feeding direction of the printing paper P.

[0033] That is, the printer 1 involved in the embodiment is a so-called line printer in which a liquid nozzle 8 is fixed inside the printer 1. It should be noted that the printer 1 involved in the embodiment is not limited to a line printer, and may also be a so-called serial printer.

[0034] A serial printer is a printer that alternately performs the following actions and feeds the printing paper P, wherein the liquid nozzle 8 moves back and forth in a direction that intersects with the feeding direction of the printing paper P, for example, in a direction that is approximately orthogonal to it, while recording.

[0035] like Figure 2 As shown, multiple (e.g., 5) liquid nozzles 8 are fixed to a frame 7. Figure 2 The example shown is an example in which three liquid nozzles 8 are arranged in front of the paper P in the transport direction and two liquid nozzles 8 are arranged behind it. In the transport direction of the paper P, the liquid nozzles 8 are arranged in such a way that the centers of each liquid nozzle 8 do not overlap.

[0036] Furthermore, a printhead group 8A is formed by multiple liquid nozzles 8 located in a frame 7. The four printhead groups 8A are arranged along the transport direction of the printing paper P. Ink of the same color is supplied to the liquid nozzles 8 belonging to the same printhead group 8A. Thus, the printer 1 can use the four printhead groups 8A to perform printing based on four-color ink.

[0037] The ink ejected from each printhead group 8A is, for example, magenta (M), yellow (Y), cyan (C), and black (K). The control unit 14 controls each printhead group 8A to eject ink of various colors onto the printing paper P, enabling the printing of color images onto the printing paper P.

[0038] It should be noted that, in order to perform surface treatment on the printing paper P, a coating agent can also be sprayed from the liquid nozzle 8 onto the printing paper P.

[0039] Furthermore, the number of liquid nozzles 8 included in a single nozzle group 8A and the number of nozzle groups 8A mounted on the printer 1 can be appropriately changed according to the printing object and printing conditions. For example, if the color being printed on the printing paper P is a single color and the printing is performed on the area that can be printed by one liquid nozzle 8, then the number of liquid nozzles 8 mounted on the printer 1 can also be one.

[0040] Printing paper P, which has been printed inside the printhead housing 5, is conveyed from the outside of the printhead housing 5 by the conveyor roller 9 and passes through the inside of the dryer 10. The dryer 10 dries the printed paper P. The dried printing paper P is then conveyed by the conveyor roller 11 and recovered by the recovery roller 13.

[0041] In printer 1, by drying the printing paper P by dryer 10, it is possible to prevent the overlapping printed paper P from sticking together at the recovery roller 13, or from friction caused by undried liquid.

[0042] The sensor unit 12 consists of a position sensor, a speed sensor, a temperature sensor, etc. The control unit 14 can determine the status of each part of the printer 1 based on the information from the sensor unit 12 and control each part of the printer 1.

[0043] In the printer 1 described above, printing paper P is shown as the printing object (i.e., the recording medium), but the printing object in printer 1 is not limited to printing paper P, and can also be a roll of cloth or the like.

[0044] Alternatively, printer 1 can be transported on a conveyor belt instead of directly feeding printing paper P. By using a conveyor belt, printer 1 can handle single sheets of paper, cut pieces of cloth, wood, tiles, etc., as printing objects.

[0045] In addition, printer 1 can also spray liquid containing conductive particles from liquid nozzle 8 to print wiring patterns for electronic devices. Furthermore, printer 1 can also spray a predetermined amount of liquid chemical agent or liquid containing chemical agent from liquid nozzle 8 toward reaction containers to produce chemicals.

[0046] Alternatively, printer 1 may also have a cleaning unit for cleaning the liquid nozzle 8. The cleaning unit cleans the liquid nozzle 8 through processes such as wiping or capping.

[0047] Wiping treatment refers to the process of wiping the surface of the area from which the liquid is sprayed, for example, using a soft wiper, to remove the liquid adhering to the liquid nozzle 8.

[0048] Additionally, the covering process is performed as follows: First, the nozzle surface 23a of the flow path member 23, which is configured to cover the part from which the liquid is ejected (see reference 23a). Figure 4 The nozzle is covered with a cover in a manner that is referred to as a cover. This creates a generally sealed space between the nozzle surface 23a and the cover.

[0049] Next, the liquid is repeatedly ejected within this confined space. This removes the liquid located on nozzle surface 23a (see reference). Figure 4 The nozzle is blocked by liquids with a viscosity higher than that under standard conditions, foreign objects, etc.

[0050] <Structure of Liquid Nozzle>

[0051] Next, refer to Figure 3 , Figure 4The structure of the liquid nozzle 8 involved in the embodiment will be explained. Figure 3 This is a top view showing the structure of the main parts of the liquid nozzle involved in the embodiment. Figure 4 yes Figure 3 The side view of the liquid nozzle shown.

[0052] The liquid nozzle 8 includes a heat sink 21, a nozzle body 24, a supply pipe 31, a recovery pipe 32, and a shielding part 40. The nozzle body 24 includes a container 22 and a flow path component 23.

[0053] It should be noted that, for ease of understanding, in the following description, the direction in which the container 22, in which the nozzle body 24 is disposed, is located in the liquid nozzle 8 will sometimes be referred to as "upper," and the direction in which the flow path member 23 is disposed relative to the container 22 will be referred to as "lower." Additionally, in Figure 3 , Figure 4 The shapes of each component are simplified and shown in the image.

[0054] The heat sink 21 is a box-shaped structure with an open lower surface. The heat sink 21 is in contact with the heat source. The heat sink 21 dissipates heat transferred from the heat source to the surrounding area. The material of the heat sink 21 may be, for example, aluminum with an aluminum oxide film treatment on its surface. Alternatively, the heat sink 21 may be a heat sink composed of multiple plate-shaped components.

[0055] The heat source may be, for example, one or more driver ICs (not shown) that control the drive of the nozzle body 24. The heat source may contact the side of the heat sink 21, for example. The heat source may also contact the upper or lower surface of the heat sink 21. It should be noted that the heat source may also contact the heat sink 21 via a component such as thermally conductive grease on the side or other surface of the heat sink 21. Alternatively, there may be a structure in which at least a portion of the heat source contacts the heat sink 21.

[0056] The container 22 has an internal flow path, and liquid is supplied to the container 22 from the outside via the supply pipe 31. The container 22 has the function of supplying liquid to the flow path component 23 and storing the liquid supplied to the flow path component 23.

[0057] The flow path member 23 is generally flat, and liquid is supplied from the container 22 into its interior. The flow path member 23 has a nozzle surface 23a disposed separately from the container 22. Multiple ejection holes for ejecting liquid into the printing paper P are disposed on the nozzle surface 23a. Furthermore, a flow path is disposed inside the flow path member 23 to allow liquid to flow from the container 22 side to the nozzle surface 23a side.

[0058] The supply pipe 31 is connected to an opening (not shown) located at one end of the container 22 along its long side. The supply pipe 31 supplies liquid to the interior of the container 22. The material of the supply pipe 31 is, for example, polypropylene or other resins.

[0059] The recovery pipe 32 is connected to an opening (not shown) located at the other end of the long side of the container 22. The recovery pipe 32 recovers liquid from the inside of the container 22.

[0060] The shielding part 40 is configured separately from the heat sink 21. The shielding part 40 is fixed to the container 22, for example, using an L-shaped fixing member (not shown) and by threads, as needed. The material of the shielding part 40 is, for example, aluminum or stainless steel. The shielding part 40 absorbs a portion of the heat radiated from the heat sink 21. Furthermore, the shielding part 40 is disposed between the heat sink 21 and the supply pipe 31. The heat radiated from the heat sink 21 is blocked by the shielding part 40, thus preventing it from easily transferring to the supply pipe 31.

[0061] Furthermore, since the shielding portion 40 is separately configured from the supply pipe 31, the heat absorbed by the shielding portion 40 is not easily transferred to the supply pipe 31. As a result, the liquid flowing in the supply pipe 31 is stably supplied to the interior of the container 22 at a desired suitable temperature. Consequently, the liquid nozzle 8 is able to stably spray liquid from the nozzle surface 23a.

[0062] It should be noted that the emissivity of the shielding portion 40 can also be lower than that of the heat sink 21. Therefore, the heat absorbed by the shielding portion 40 is less likely to radiate to its surroundings, thus mitigating the radiation of the heat absorbed by the shielding portion 40. Consequently, the liquid flowing in the supply pipe 31 is stably supplied to the interior of the container 22 at a desired suitable temperature. As a result, the liquid nozzle 8 can stably eject liquid from the nozzle surface 23a. It should be noted that the emissivity of the shielding portion 40 and the heat sink 21 can be measured according to JIS A1423:2017.

[0063] Alternatively, the shielding part corresponding to the shielding part 40 may not be provided between the heat sink 21 and the recovery pipe 32. In this way, the heat transferred to the heat sink 21 can be quickly dissipated to the recovery pipe 32, thereby dissipating heat from the heat sink 21 and the heat source.

[0064] Furthermore, the height of the shielding part 40 from the nozzle body 24 is higher than the height of the heat sink 21 from the nozzle body 24. Therefore, the heat radiated from the heat sink 21 can be blocked by the shielding part 40. Consequently, the heat radiated from the heat sink 21 is less likely to be supplied to the supply pipe 31.

[0065] <Various variations>

[0066] For various modifications of the liquid nozzle 8 involved in the implementation method, refer to Figures 5-12 Let me explain. Figure 5 This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 1 of the embodiment. Figure 6 yes Figure 5The image shows a side view of the liquid nozzle. It should be noted that in the various variations below, the same reference numerals are used for the same parts as in the embodiment, and repeated descriptions are omitted.

[0067] like Figure 5 , Figure 6 As shown, the bending of the shielding portion 40 when viewed from above differs from that of the liquid nozzle 8 described in the embodiment. Figure 5 As shown, the shielding portion 40 has a first portion 40a, a second portion 40b, and a third portion 40c.

[0068] The first part 40a is located between the heat sink 21 and the supply pipe 31 and extends along the short side of the container 22. The second part 40b and the third part 40c are the two ends of the first part 40a extending along the short side of the container 22, respectively, extending along the long side of the container 22. The shielding part 40 is configured to surround the heat sink 21 when viewed from above.

[0069] By configuring the shielding portion 40 to surround the heat sink 21 when viewed from above, the shielding effect of the shielding portion 40 on the heat radiated from the heat sink 21 is further improved. As a result, the liquid flowing in the supply pipe 31 is stably supplied to the interior of the container 22 at a desired suitable temperature. Consequently, the liquid nozzle 8 is able to stably spray liquid from the nozzle surface 23a. In addition, by bending the shielding portion 40 when viewed from above, the strength of the shielding portion 40 can be increased.

[0070] It should be noted that, in Figure 5 , Figure 6 The diagram illustrates the shielding portion 40, which bends around the heat sink 21 when viewed from above. However, the shielding portion 40 can also be bent when viewed from above. Furthermore, the shielding portion 40 can also be bent or flexed when viewed from above, surrounding the supply pipe 31. Additionally, the first part 40a, the second part 40b, and the third part 40c can each have different heights.

[0071] Figure 7 This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 2 of the embodiment. Figure 7 In the liquid nozzle 8 shown, the emissivity of the shielding portion 40 differs between the first surface 41 facing the heat sink 21 and the second surface 42 facing the supply pipe 31. Specifically, the emissivity of the first surface 41 on the side of the heat sink 21 in the shielding portion 40 is higher than that of the second surface 42 on the side of the supply pipe 31 in the shielding portion 40.

[0072] On the first surface 41, which has a higher emissivity than the second surface 42, heat radiated from the heat sink 21 is easily absorbed. On the other hand, on the second surface 42, which has a lower emissivity than the first surface 41, heat absorbed from the heat sink 21 is not easily dissipated. As a result, the shielding effect of the shielding portion 40 on the heat radiated from the heat sink 21 is further improved, and thus the liquid nozzle 8 can stably spray liquid from the nozzle surface 23a.

[0073] Here, the first surface 41, which has a higher emissivity than the second surface 42, can be obtained, for example, by roughening the first surface 41 or processing it with an alumina film. Alternatively, the second surface 42 can be smoothed to reduce its emissivity compared to the first surface 41.

[0074] It should be noted that, alternatively, the emissivity of the first surface 41 of the shielding portion 40 located on the heat sink 21 side may be higher than that of the heat sink 21. By making the emissivity of the first surface 41 higher than that of the heat sink 21, heat radiated from the heat sink 21 toward the shielding portion 40 is more easily absorbed from the first surface 41. In this case, the emissivity of the second surface 42 located on the supply pipe 31 side may also be lower than that of the heat sink 21.

[0075] In addition, Figure 7 In the example shown, a single component can be used to create different emissivity, but the shielding part 40 can also be composed of multiple components with different emissivity. Figure 8 This is a top view showing the structure of the main part of the liquid nozzle involved in the modified example 3 of the embodiment.

[0076] like Figure 8 As shown, the shielding portion 40 has a first member 43 and a second member 44. The emissivity of the first member 43 located on the heat sink 21 side of the shielding portion 40 is higher than that of the second member 44 located on the supply pipe 31 side of the shielding portion 40. The material of the first member 43 is, for example, aluminum with an alumina film treatment on its surface, and the material of the second member 44 is, for example, stainless steel or aluminum without an alumina film treatment on its surface.

[0077] In the first component 43, which has a higher emissivity than the second component 44, heat radiated from the heat sink 21 is easily absorbed. On the other hand, in the second component 44, which has a lower emissivity than the first component 43, heat absorbed from the heat sink 21 is not easily dissipated. As a result, the shielding effect of the shielding part 40 on the heat radiated from the heat sink 21 is further improved, and thus the liquid nozzle 8 can stably spray liquid from the nozzle surface 23a.

[0078] Figure 9 This is a top view showing the structure of the main parts of the nozzle structure of the liquid nozzle according to the modified example 4 of the embodiment. Figure 10 yes Figure 9 The side view of the nozzle structure shown.

[0079] like Figure 9 , Figure 10 As shown, the nozzle structure 80 includes a liquid nozzle 8 and a box-shaped body 45. The box-shaped body 45 is located above the container 22 and surrounds the heat sink 21. The material of the box-shaped body 45 is, for example, aluminum or stainless steel.

[0080] The portion of the box-shaped body 45 located between the heat sink 21 and the supply pipe 31 also serves as the shielding portion 40 of the liquid nozzle 8 according to the embodiment. Furthermore, since the box-shaped body 45 completely surrounds the heat sink 21, the shielding effect on heat radiated from the heat sink 21 is further improved. Therefore, the nozzle structure 80 enables the liquid to be stably ejected from the nozzle surface 23a.

[0081] It should be noted that, alternatively, the emissivity of the portion of the box-shaped body 45 corresponding to the shielding portion 40 of the liquid nozzle 8 according to the embodiment may be lower than the emissivity of other portions of the box-shaped body 45. This improves the shielding effect of heat radiated from the heat sink 21 at the portion corresponding to the shielding portion 40, while improving the heat dissipation of the box-shaped body 45 at other portions.

[0082] Furthermore, the box-shaped body 45 provides increased strength compared to the plate-shaped shielding portion 40 of the liquid nozzle 8 described in the embodiment. It should be noted that a cylindrical body with an open top, such as the heat sink 21, may also be used instead of the box-shaped body 45; however, illustrations of this are omitted.

[0083] Figure 11 This is a top view showing the structure of the main parts of the nozzle structure of the liquid nozzle according to the modified example 5 of the embodiment. Figure 12 yes Figure 11 The side view of the nozzle structure shown.

[0084] like Figure 11 , Figure 12 As shown, the nozzle structure 80 includes a liquid nozzle 8 and a frame 50. The frame 50 is located on the container 22 and is fixed to the liquid nozzle 8, for example, by threads. The material of the frame 50 is, for example, stainless steel or aluminum.

[0085] Furthermore, the shielding part 40 also serves as part of the frame 50. Therefore, the shielding part 40 can be properly positioned without being fixed to the liquid nozzle 8 by means of, for example, threaded fastening. As a result, the design flexibility of the liquid nozzle 8 is increased.

[0086] It should be noted that frame 50 can be Figure 1 , Figure 2The part shown in the frame 7 can also be a separate component relative to the frame 7.

[0087] The above describes various embodiments of the present invention, but the present invention is not limited to the above embodiments, and various modifications can be made as long as they do not depart from its spirit. For example... Figure 11 and / or Figure 12 The shielding portion 40 of the nozzle structure 80 shown can also be the shielding portion 40 of the liquid nozzle 8 involved in various modified examples.

[0088] As described above, the liquid nozzle 8 according to the embodiment includes a heat sink 21, a nozzle body 24, a supply pipe 31, and a shielding portion 40. The heat sink 21 is in contact with a heat source. The nozzle body 24 has a spray hole for spraying liquid. The supply pipe 31 supplies liquid to the nozzle body 24. The shielding portion 40 is disposed between the heat sink 21 and the supply pipe 31, and is separately disposed from the heat sink 21 and the supply pipe 31. As a result, liquid can be sprayed stably.

[0089] Furthermore, the liquid nozzle 8 according to the embodiment also includes a recovery pipe 32 for recovering liquid from the nozzle body 24, and no shielding portion is provided between the heat sink 21 and the recovery pipe 32. As a result, the heat transferred to the heat sink 21 can be dissipated quickly.

[0090] Furthermore, the shielding portion 40 described in the embodiment is bent or flexed when viewed from above. This allows for stable liquid ejection.

[0091] Furthermore, in the liquid nozzle 8 according to the embodiment, the emissivity of the shielding portion 40 is lower than that of the heat sink 21. This reduces the radiation of heat absorbed by the shielding portion 40.

[0092] Furthermore, in the liquid nozzle 8 according to the embodiment, the emissivity of the shielding portion 40 on the heat sink 21 side is higher than that on the supply pipe 31 side. As a result, liquid can be sprayed out stably.

[0093] Furthermore, in the liquid nozzle 8 according to the embodiment, the height of the shielding portion 40 from the nozzle body 24 is higher than the height of the heat sink 21 from the nozzle body 24. As a result, liquid can be sprayed out stably.

[0094] Furthermore, the nozzle structure 80 according to the embodiment includes: a heat sink 21 that contacts a heat source; a nozzle body 24 having a spray hole for spraying liquid; a supply pipe 31 that supplies liquid to the nozzle body 24; and a box-shaped body 45 that surrounds the heat sink 21 and includes a shielding portion disposed between the heat sink 21 and the supply pipe 31, and is separately disposed from the heat sink 21 and the supply pipe 31. This allows for stable liquid spraying.

[0095] Furthermore, the nozzle structure 80 according to the embodiment includes the liquid nozzle 8 described above and a frame 50 for fixing the liquid nozzle 8. The shielding portion 40 also serves as part of the frame 50. As a result, the design freedom of the liquid nozzle 8 is increased.

[0096] Further effects and variations can be readily derived by those skilled in the art. Therefore, the broader scope of this disclosure is not limited to the specific details and representative embodiments shown and described above. Thus, various modifications can be made without departing from the spirit or scope of the invention as defined by the scope of the technical solutions and their equivalents.

[0097] Explanation of reference numerals in the attached figures

[0098] 1. Printer (an example of a recording device)

[0099] 4. Coating machine

[0100] 6. Conveyor roller (an example of a conveyor section)

[0101] 8 Liquid nozzles

[0102] 10 Dryer

[0103] 14 Control Department

[0104] 21 Heat sink

[0105] 22 containers

[0106] 23 Flow path components

[0107] 24. Nozzle body

[0108] 31 Supply Management

[0109] 32 Recycling Tube

[0110] 40. Shelter

[0111] 45 Box-shaped body

[0112] 50 frames.

Claims

1. A liquid nozzle, wherein, The liquid nozzle has the following features: The heat sink is in contact with the heat source; The nozzle body has a spray hole for spraying liquid; A supply pipe that supplies the liquid to the nozzle body; and A shielding portion is disposed between the heat sink and the supply pipe, and is spaced apart from the supply pipe by a gap. The emissivity of the shielding part is lower than that of the heat sink.

2. The liquid nozzle according to claim 1, wherein, The liquid nozzle also includes a recovery pipe for recovering the liquid from the nozzle body. No shielding is provided between the heat sink and the recycling pipe.

3. The liquid nozzle according to claim 1 or 2, wherein, The shielding part is bent or flexed when viewed from above.

4. The liquid nozzle according to claim 1 or 2, wherein, Regarding the shielding part, the emissivity is different on the heat sink side and the supply pipe side, with the emissivity on the heat sink side being higher than that on the supply pipe side.

5. The liquid nozzle according to claim 1 or 2, wherein, The height of the shielding part from the nozzle body is higher than the height of the heat sink from the nozzle body.

6. A nozzle structure, wherein, The nozzle structure includes: The heat sink is in contact with the heat source; The nozzle body has a spray hole for spraying liquid; A supply pipe that supplies the liquid to the nozzle body; and A box-shaped body surrounds the heat sink and includes a shielding portion disposed between the heat sink and the supply pipe, and spaced apart from the supply pipe by a gap. The emissivity of the shielding part is lower than that of the heat sink.

7. A nozzle structure, wherein, The nozzle structure includes: The liquid nozzle according to any one of claims 1 to 5; and A frame that secures the liquid nozzle. The shielding portion also serves as part of the frame.

8. A recording device, wherein, The recording device includes: The nozzle structure as described in claim 6 or 7; and The delivery unit delivers the recording medium to the nozzle structure.

9. A recording device, wherein, The recording device includes: The nozzle structure as described in claim 6 or 7; and A coating machine that applies a coating agent to a recording medium.

10. A recording device, wherein, The recording device includes: The nozzle structure as described in claim 6 or 7; and A dryer is used to dry the recording medium.

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